bump version 1.14.7

Various fixes & tweaks

.gitignore

@@ -14,3 +14,4 @@
 /app/prodMainnet
 /app/alphaStagenet
 /app/prodStagenet
+/app/.cxx

app/build.gradle

@@ -2,14 +2,13 @@ apply plugin: 'com.android.application'
 
 android {
     compileSdkVersion 28
-    buildToolsVersion '28.0.3'
+    buildToolsVersion '29.0.2'
     defaultConfig {
         applicationId "com.m2049r.xmrwallet"
         minSdkVersion 21
         targetSdkVersion 28
-        versionCode 193
-        versionName "1.12.3 'Caerbannog'"
-
+        versionCode 407
+        versionName "1.14.7 'On Board'"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
         externalNativeBuild {
             cmake {
@@ -93,6 +92,11 @@ android {
                 outputFileName = "$rootProject.ext.apkName-" + v + "_" + abiName + ".apk"
         }
     }
+
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
 }
 
 dependencies {
@@ -102,6 +106,7 @@ dependencies {
     implementation "com.android.support:recyclerview-v7:$rootProject.ext.supportVersion"
     implementation "com.android.support:cardview-v7:$rootProject.ext.supportVersion"
     implementation "com.android.support:swiperefreshlayout:$rootProject.ext.supportVersion"
+    implementation "com.android.support.constraint:constraint-layout:$rootProject.ext.constraintVersion"
     implementation 'me.dm7.barcodescanner:zxing:1.9.8'
 
     implementation "com.squareup.okhttp3:okhttp:$rootProject.ext.okHttpVersion"
@@ -124,5 +129,4 @@ dependencies {
     testImplementation "com.squareup.okhttp3:mockwebserver:$rootProject.ext.okHttpVersion"
     testImplementation 'org.json:json:20180813'
     testImplementation 'net.jodah:concurrentunit:0.4.4'
-
 }

app/src/main/AndroidManifest.xml

@@ -20,24 +20,27 @@
         android:supportsRtl="true"
         android:theme="@style/MyMaterialTheme"
         android:usesCleartextTraffic="true">
-
+        <activity android:name=".MainActivity"
+            android:configChanges="orientation|keyboardHidden"
+            android:launchMode="singleTop"
+            android:screenOrientation="portrait">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
         <activity
             android:name=".WalletActivity"
             android:configChanges="orientation|keyboardHidden"
             android:label="@string/wallet_activity_name"
             android:launchMode="singleTask"
             android:screenOrientation="behind" />
-
         <activity
             android:name=".LoginActivity"
             android:configChanges="orientation|keyboardHidden"
             android:label="@string/app_name"
             android:launchMode="singleTop"
             android:screenOrientation="locked">
-            <intent-filter>
-                <action android:name="android.intent.action.MAIN" />
-                <category android:name="android.intent.category.LAUNCHER" />
-            </intent-filter>
             <intent-filter>
                 <action android:name="android.hardware.usb.action.USB_DEVICE_ATTACHED" />
             </intent-filter>
@@ -62,6 +65,10 @@
                 android:name="android.hardware.usb.action.USB_DEVICE_ATTACHED"
                 android:resource="@xml/usb_device_filter" />
         </activity>
+        <activity android:name=".onboarding.OnBoardingActivity"
+            android:configChanges="orientation|keyboardHidden"
+            android:launchMode="singleTask"
+            android:screenOrientation="portrait"/>
 
         <service
             android:name=".service.WalletService"
@@ -79,4 +86,4 @@
                 android:resource="@xml/filepaths" />
         </provider>
     </application>
-</manifest>
+</manifest>

app/src/main/java/com/m2049r/xmrwallet/GenerateFragment.java

@@ -79,6 +79,23 @@ public class GenerateFragment extends Fragment {
 
     private String type = null;
 
+    private void clearErrorOnTextEntry(final TextInputLayout textInputLayout) {
+        textInputLayout.getEditText().addTextChangedListener(new TextWatcher() {
+            @Override
+            public void afterTextChanged(Editable editable) {
+                textInputLayout.setError(null);
+            }
+
+            @Override
+            public void beforeTextChanged(CharSequence s, int start, int count, int after) {
+            }
+
+            @Override
+            public void onTextChanged(CharSequence s, int start, int before, int count) {
+            }
+        });
+    }
+
     @Override
     public View onCreateView(LayoutInflater inflater, ViewGroup container,
                              Bundle savedInstanceState) {
@@ -110,6 +127,23 @@ public class GenerateFragment extends Fragment {
                 }
             }
         });
+        clearErrorOnTextEntry(etWalletName);
+
+        etWalletPassword.getEditText().addTextChangedListener(new TextWatcher() {
+            @Override
+            public void afterTextChanged(Editable editable) {
+                checkPassword();
+            }
+
+            @Override
+            public void beforeTextChanged(CharSequence s, int start, int count, int after) {
+            }
+
+            @Override
+            public void onTextChanged(CharSequence s, int start, int before, int count) {
+            }
+        });
+
         etWalletMnemonic.getEditText().setOnFocusChangeListener(new View.OnFocusChangeListener() {
             @Override
             public void onFocusChange(View v, boolean hasFocus) {
@@ -118,6 +152,8 @@ public class GenerateFragment extends Fragment {
                 }
             }
         });
+        clearErrorOnTextEntry(etWalletMnemonic);
+
         etWalletAddress.getEditText().setOnFocusChangeListener(new View.OnFocusChangeListener() {
             @Override
             public void onFocusChange(View v, boolean hasFocus) {
@@ -126,6 +162,8 @@ public class GenerateFragment extends Fragment {
                 }
             }
         });
+        clearErrorOnTextEntry(etWalletAddress);
+
         etWalletViewKey.getEditText().setOnFocusChangeListener(new View.OnFocusChangeListener() {
             @Override
             public void onFocusChange(View v, boolean hasFocus) {
@@ -134,6 +172,8 @@ public class GenerateFragment extends Fragment {
                 }
             }
         });
+        clearErrorOnTextEntry(etWalletViewKey);
+
         etWalletSpendKey.getEditText().setOnFocusChangeListener(new View.OnFocusChangeListener() {
             @Override
             public void onFocusChange(View v, boolean hasFocus) {
@@ -142,6 +182,7 @@ public class GenerateFragment extends Fragment {
                 }
             }
         });
+        clearErrorOnTextEntry(etWalletSpendKey);
 
         Helper.showKeyboard(getActivity());
 
@@ -310,21 +351,6 @@ public class GenerateFragment extends Fragment {
             }
         });
 
-        etWalletPassword.getEditText().addTextChangedListener(new TextWatcher() {
-            @Override
-            public void afterTextChanged(Editable editable) {
-                checkPassword();
-            }
-
-            @Override
-            public void beforeTextChanged(CharSequence s, int start, int count, int after) {
-            }
-
-            @Override
-            public void onTextChanged(CharSequence s, int start, int before, int count) {
-            }
-        });
-
         etWalletName.requestFocus();
         initZxcvbn();
 
@@ -412,7 +438,7 @@ public class GenerateFragment extends Fragment {
             height = RestoreHeight.getInstance().getHeight(parser.parse(restoreHeight));
         } catch (ParseException ex) {
         }
-        if (height <= 0)
+        if ((height <= 0) && (restoreHeight.length() == 8))
             try {
                 // is it a date without dashes?
                 SimpleDateFormat parser = new SimpleDateFormat("yyyyMMdd");

app/src/main/java/com/m2049r/xmrwallet/LoginActivity.java

@@ -315,10 +315,14 @@ public class LoginActivity extends BaseActivity
                         if (WalletManager.getInstance().walletExists(walletFile)) {
                             Helper.promptPassword(LoginActivity.this, walletName, true, new Helper.PasswordAction() {
                                 @Override
-                                public void action(String walletName, String password, boolean fingerprintUsed) {
+                                public void act(String walletName, String password, boolean fingerprintUsed) {
                                     if (checkDevice(walletName, password))
                                         startDetails(walletFile, password, GenerateReviewFragment.VIEW_TYPE_DETAILS);
                                 }
+
+                                @Override
+                                public void fail(String walletName, String password, boolean fingerprintUsed) {
+                                }
                             });
                         } else { // this cannot really happen as we prefilter choices
                             Timber.e("Wallet missing: %s", walletName);
@@ -348,10 +352,14 @@ public class LoginActivity extends BaseActivity
         if (WalletManager.getInstance().walletExists(walletFile)) {
             Helper.promptPassword(LoginActivity.this, walletName, false, new Helper.PasswordAction() {
                 @Override
-                public void action(String walletName, String password, boolean fingerprintUsed) {
+                public void act(String walletName, String password, boolean fingerprintUsed) {
                     if (checkDevice(walletName, password))
                         startReceive(walletFile, password);
                 }
+
+                @Override
+                public void fail(String walletName, String password, boolean fingerprintUsed) {
+                }
             });
         } else { // this cannot really happen as we prefilter choices
             Toast.makeText(this, getString(R.string.bad_wallet), Toast.LENGTH_SHORT).show();
@@ -1306,10 +1314,15 @@ public class LoginActivity extends BaseActivity
             Helper.promptPassword(LoginActivity.this, walletName, false,
                     new Helper.PasswordAction() {
                         @Override
-                        public void action(String walletName, String password, boolean fingerprintUsed) {
+                        public void act(String walletName, String password, boolean fingerprintUsed) {
                             if (checkDevice(walletName, password))
                                 startWallet(walletName, password, fingerprintUsed, streetmode);
                         }
+
+                        @Override
+                        public void fail(String walletName, String password, boolean fingerprintUsed) {
+                        }
+
                     });
         } else { // this cannot really happen as we prefilter choices
             Toast.makeText(this, getString(R.string.bad_wallet), Toast.LENGTH_SHORT).show();

app/src/main/java/com/m2049r/xmrwallet/MainActivity.java

@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2018-2020 EarlOfEgo, m2049r
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.m2049r.xmrwallet;
+
+import android.content.Intent;
+import android.os.Bundle;
+import android.support.annotation.Nullable;
+import android.support.v7.app.AppCompatActivity;
+
+import com.m2049r.xmrwallet.onboarding.OnBoardingActivity;
+import com.m2049r.xmrwallet.onboarding.OnBoardingManager;
+
+public class MainActivity extends AppCompatActivity {
+    @Override
+    protected void onCreate(@Nullable final Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        if (OnBoardingManager.shouldShowOnBoarding(getApplicationContext())) {
+            startActivity(new Intent(this, OnBoardingActivity.class));
+        } else {
+            startActivity(new Intent(this, LoginActivity.class));
+        }
+        finish();
+    }
+}

app/src/main/java/com/m2049r/xmrwallet/WalletActivity.java

@@ -88,7 +88,6 @@ public class WalletActivity extends BaseActivity implements WalletFragment.Liste
     private ActionBarDrawerToggle drawerToggle;
 
     private Toolbar toolbar;
-    private boolean needVerifyIdentity;
     private boolean requestStreetMode = false;
 
     private String password;
@@ -142,7 +141,6 @@ public class WalletActivity extends BaseActivity implements WalletFragment.Liste
 
     private void enableStreetMode(boolean enable) {
         if (enable) {
-            needVerifyIdentity = true;
             streetMode = getWallet().getDaemonBlockChainHeight();
         } else {
             streetMode = 0;
@@ -151,11 +149,9 @@ public class WalletActivity extends BaseActivity implements WalletFragment.Liste
                 getSupportFragmentManager().findFragmentByTag(WalletFragment.class.getName());
         if (walletFragment != null) walletFragment.resetDismissedTransactions();
         forceUpdate();
-        runOnUiThread(new Runnable() {
-            @Override
-            public void run() {
+        runOnUiThread(() -> {
+            if (getWallet() != null)
                 updateAccountsBalance();
-            }
         });
     }
 
@@ -200,7 +196,6 @@ public class WalletActivity extends BaseActivity implements WalletFragment.Liste
         if (extras != null) {
             acquireWakeLock();
             String walletId = extras.getString(REQUEST_ID);
-            needVerifyIdentity = extras.getBoolean(REQUEST_FINGERPRINT_USED);
             // we can set the streetmode height AFTER opening the wallet
             requestStreetMode = extras.getBoolean(REQUEST_STREETMODE);
             password = extras.getString(REQUEST_PW);
@@ -217,6 +212,20 @@ public class WalletActivity extends BaseActivity implements WalletFragment.Liste
         releaseWakeLock();
     }
 
+    private void onWalletRescan() {
+        try {
+            final WalletFragment walletFragment = (WalletFragment)
+                    getSupportFragmentManager().findFragmentByTag(WalletFragment.class.getName());
+            getWallet().rescanBlockchainAsync();
+            synced = false;
+            walletFragment.unsync();
+            invalidateOptionsMenu();
+        } catch (ClassCastException ex) {
+            Timber.d(ex.getLocalizedMessage());
+            // keep calm and carry on
+        }
+    }
+
     @Override
     protected void onStop() {
         Timber.d("onStop()");
@@ -243,7 +252,7 @@ public class WalletActivity extends BaseActivity implements WalletFragment.Liste
     public boolean onPrepareOptionsMenu(Menu menu) {
         MenuItem renameItem = menu.findItem(R.id.action_rename);
         if (renameItem != null)
-            renameItem.setVisible(hasWallet() && getWallet().isSynchronized());
+            renameItem.setEnabled(hasWallet() && getWallet().isSynchronized());
         MenuItem streetmodeItem = menu.findItem(R.id.action_streetmode);
         if (streetmodeItem != null)
             if (isStreetMode()) {
@@ -251,12 +260,18 @@ public class WalletActivity extends BaseActivity implements WalletFragment.Liste
             } else {
                 streetmodeItem.setIcon(R.drawable.gunther_24dp);
             }
+        final MenuItem rescanItem = menu.findItem(R.id.action_rescan);
+        if (rescanItem != null)
+            rescanItem.setEnabled(isSynced());
         return super.onPrepareOptionsMenu(menu);
     }
 
     @Override
     public boolean onOptionsItemSelected(MenuItem item) {
         switch (item.getItemId()) {
+            case R.id.action_rescan:
+                onWalletRescan();
+                return true;
             case R.id.action_info:
                 onWalletDetails();
                 return true;
@@ -313,7 +328,7 @@ public class WalletActivity extends BaseActivity implements WalletFragment.Liste
     private void onDisableStreetMode() {
         Helper.promptPassword(WalletActivity.this, getWallet().getName(), false, new Helper.PasswordAction() {
             @Override
-            public void action(String walletName, String password, boolean fingerprintUsed) {
+            public void act(String walletName, String password, boolean fingerprintUsed) {
                 runOnUiThread(new Runnable() {
                     @Override
                     public void run() {
@@ -322,6 +337,10 @@ public class WalletActivity extends BaseActivity implements WalletFragment.Liste
                     }
                 });
             }
+
+            @Override
+            public void fail(String walletName, String password, boolean fingerprintUsed) {
+            }
         });
     }
 
@@ -556,10 +575,9 @@ public class WalletActivity extends BaseActivity implements WalletFragment.Liste
     @Override
     public boolean onRefreshed(final Wallet wallet, final boolean full) {
         Timber.d("onRefreshed()");
-        runOnUiThread(new Runnable() {
-            public void run() {
+        runOnUiThread(() -> {
+            if (getWallet() != null)
                 updateAccountsBalance();
-            }
         });
         if (numAccounts != wallet.getNumAccounts()) {
             numAccounts = wallet.getNumAccounts();
@@ -835,17 +853,16 @@ public class WalletActivity extends BaseActivity implements WalletFragment.Liste
                         final Bundle extras = new Bundle();
                         extras.putString(GenerateReviewFragment.REQUEST_TYPE, GenerateReviewFragment.VIEW_TYPE_WALLET);
 
-                        if (needVerifyIdentity) {
-                            Helper.promptPassword(WalletActivity.this, getWallet().getName(), true, new Helper.PasswordAction() {
-                                @Override
-                                public void action(String walletName, String password, boolean fingerprintUsed) {
-                                    replaceFragment(new GenerateReviewFragment(), null, extras);
-                                    needVerifyIdentity = false;
-                                }
-                            });
-                        } else {
-                            replaceFragment(new GenerateReviewFragment(), null, extras);
-                        }
+                        Helper.promptPassword(WalletActivity.this, getWallet().getName(), true, new Helper.PasswordAction() {
+                            @Override
+                            public void act(String walletName, String password, boolean fingerprintUsed) {
+                                replaceFragment(new GenerateReviewFragment(), null, extras);
+                            }
+
+                            @Override
+                            public void fail(String walletName, String password, boolean fingerprintUsed) {
+                            }
+                        });
 
                         break;
                     case DialogInterface.BUTTON_NEGATIVE:
@@ -983,12 +1000,6 @@ public class WalletActivity extends BaseActivity implements WalletFragment.Liste
         return getWallet().getUnlockedBalance();
     }
 
-    @Override
-    public boolean verifyWalletPassword(String password) {
-        String walletPassword = Helper.getWalletPassword(getApplicationContext(), getWalletName(), password);
-        return walletPassword != null;
-    }
-
     @Override
     public void onBackPressed() {
         if (drawer.isDrawerOpen(GravityCompat.START)) {

app/src/main/java/com/m2049r/xmrwallet/WalletFragment.java

@@ -50,9 +50,8 @@ import com.m2049r.xmrwallet.widget.Toolbar;
 
 import java.text.NumberFormat;
 import java.util.ArrayList;
-import java.util.Date;
+import java.util.Arrays;
 import java.util.List;
-import java.util.stream.Collectors;
 
 import timber.log.Timber;
 
@@ -114,9 +113,12 @@ public class WalletFragment extends Fragment
         ivSynced = view.findViewById(R.id.ivSynced);
 
         sCurrency = view.findViewById(R.id.sCurrency);
-        ArrayAdapter currencyAdapter = ArrayAdapter.createFromResource(getContext(), R.array.currency, R.layout.item_spinner_balance);
-        currencyAdapter.setDropDownViewResource(R.layout.item_spinner_dropdown_item);
-        sCurrency.setAdapter(currencyAdapter);
+        List<String> currencies = new ArrayList<>();
+        currencies.add(Helper.BASE_CRYPTO);
+        currencies.addAll(Arrays.asList(getResources().getStringArray(R.array.currency)));
+        ArrayAdapter<String> spinnerAdapter = new ArrayAdapter<>(getContext(), R.layout.item_spinner_balance, currencies);
+        spinnerAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
+        sCurrency.setAdapter(spinnerAdapter);
 
         bSend = view.findViewById(R.id.bSend);
         bReceive = view.findViewById(R.id.bReceive);
@@ -220,7 +222,7 @@ public class WalletFragment extends Fragment
         // at this point selection is XMR in case of error
         String displayB;
         double amountA = Helper.getDecimalAmount(unlockedBalance).doubleValue();
-        if (!Helper.CRYPTO.equals(balanceCurrency)) { // not XMR
+        if (!Helper.BASE_CRYPTO.equals(balanceCurrency)) { // not XMR
             double amountB = amountA * balanceRate;
             displayB = Helper.getFormattedAmount(amountB, false);
         } else { // XMR
@@ -229,7 +231,7 @@ public class WalletFragment extends Fragment
         showBalance(displayB);
     }
 
-    String balanceCurrency = Helper.CRYPTO;
+    String balanceCurrency = Helper.BASE_CRYPTO;
     double balanceRate = 1.0;
 
     private final ExchangeApi exchangeApi = Helper.getExchangeApi();
@@ -245,7 +247,7 @@ public class WalletFragment extends Fragment
             Timber.d(currency);
             if (!currency.equals(balanceCurrency) || (balanceRate <= 0)) {
                 showExchanging();
-                exchangeApi.queryExchangeRate(Helper.CRYPTO, currency,
+                exchangeApi.queryExchangeRate(Helper.BASE_CRYPTO, currency,
                         new ExchangeCallback() {
                             @Override
                             public void onSuccess(final ExchangeRate exchangeRate) {
@@ -301,10 +303,10 @@ public class WalletFragment extends Fragment
 
     public void exchange(final ExchangeRate exchangeRate) {
         hideExchanging();
-        if (!Helper.CRYPTO.equals(exchangeRate.getBaseCurrency())) {
+        if (!Helper.BASE_CRYPTO.equals(exchangeRate.getBaseCurrency())) {
             Timber.e("Not XMR");
             sCurrency.setSelection(0, true);
-            balanceCurrency = Helper.CRYPTO;
+            balanceCurrency = Helper.BASE_CRYPTO;
             balanceRate = 1.0;
         } else {
             int spinnerPosition = ((ArrayAdapter) sCurrency.getAdapter()).getPosition(exchangeRate.getQuoteCurrency());
@@ -354,6 +356,15 @@ public class WalletFragment extends Fragment
         if (isVisible()) enableAccountsList(true); //otherwise it is enabled in onResume()
     }
 
+    public void unsync() {
+        if (!activityCallback.isWatchOnly()) {
+            bSend.setVisibility(View.INVISIBLE);
+            bSend.setEnabled(false);
+        }
+        if (isVisible()) enableAccountsList(false); //otherwise it is enabled in onResume()
+        firstBlock = 0;
+    }
+
     boolean walletLoaded = false;
 
     public void onLoaded() {

app/src/main/java/com/m2049r/xmrwallet/data/BarcodeData.java

@@ -59,42 +59,36 @@ public class BarcodeData {
     final public Asset asset;
     final public String address;
     final public String addressName;
-    final public String paymentId;
     final public String amount;
     final public String description;
     final public Security security;
     final public String bip70;
 
     public BarcodeData(Asset asset, String address) {
-        this(asset, address, null, null, null, null, Security.NORMAL);
+        this(asset, address, null, null, null, Security.NORMAL);
     }
 
     public BarcodeData(Asset asset, String address, String amount) {
-        this(asset, address, null, null, null, amount, Security.NORMAL);
+        this(asset, address, null, null, amount, Security.NORMAL);
     }
 
     public BarcodeData(Asset asset, String address, String amount, String description, Security security) {
-        this(asset, address, null, null, description, amount, security);
-    }
-
-    public BarcodeData(Asset asset, String address, String paymentId, String amount) {
-        this(asset, address, null, paymentId, null, amount, Security.NORMAL);
+        this(asset, address, null, description, amount, security);
     }
 
     public BarcodeData(Asset asset, String address, String paymentId, String description, String amount) {
-        this(asset, address, null, paymentId, description, amount, Security.NORMAL);
+        this(asset, address, null, description, amount, Security.NORMAL);
     }
 
-    public BarcodeData(Asset asset, String address, String addressName, String paymentId, String description, String amount, Security security) {
-        this(asset, address, addressName, null, paymentId, description, amount, security);
+    public BarcodeData(Asset asset, String address, String addressName, String description, String amount, Security security) {
+        this(asset, address, addressName, null, description, amount, security);
     }
 
-    public BarcodeData(Asset asset, String address, String addressName, String bip70, String paymentId, String description, String amount, Security security) {
+    public BarcodeData(Asset asset, String address, String addressName, String bip70, String description, String amount, Security security) {
         this.asset = asset;
         this.address = address;
         this.bip70 = bip70;
         this.addressName = addressName;
-        this.paymentId = paymentId;
         this.description = description;
         this.amount = amount;
         this.security = security;
@@ -110,11 +104,6 @@ public class BarcodeData {
         StringBuilder sb = new StringBuilder();
         sb.append(BarcodeData.XMR_SCHEME).append(address);
         boolean first = true;
-        if ((paymentId != null) && !paymentId.isEmpty()) {
-            sb.append("?");
-            first = false;
-            sb.append(BarcodeData.XMR_PAYMENTID).append('=').append(paymentId);
-        }
         if ((description != null) && !description.isEmpty()) {
             sb.append(first ? "?" : "&");
             first = false;
@@ -185,8 +174,11 @@ public class BarcodeData {
         String address = monero.getPath();
 
         String paymentId = parms.get(XMR_PAYMENTID);
-        // deal with empty payment_id created by non-spec-conforming apps
-        if ((paymentId != null) && paymentId.isEmpty()) paymentId = null;
+        // no support for payment ids!
+        if (paymentId != null) {
+            Timber.e("no support for payment ids!");
+            return null;
+        }
 
         String description = parms.get(XMR_DESCRIPTION);
         String amount = parms.get(XMR_AMOUNT);
@@ -198,10 +190,6 @@ public class BarcodeData {
                 return null; // we have an amount but its not a number!
             }
         }
-        if ((paymentId != null) && !Wallet.isPaymentIdValid(paymentId)) {
-            Timber.d("paymentId invalid");
-            return null;
-        }
 
         if (!Wallet.isAddressValid(address)) {
             Timber.d("address invalid");
@@ -267,7 +255,7 @@ public class BarcodeData {
                 Timber.d("[%s] is not http url", bip70);
                 return null;
             }
-            return new BarcodeData(BarcodeData.Asset.BTC, null, null, bip70, null, description, null, Security.NORMAL);
+            return new BarcodeData(BarcodeData.Asset.BTC, null, null, bip70, description, null, Security.NORMAL);
         }
         if (!BitcoinAddressValidator.validate(address)) {
             Timber.d("BTC address (%s) invalid", address);

app/src/main/java/com/m2049r/xmrwallet/data/TxData.java

@@ -29,19 +29,16 @@ public class TxData implements Parcelable {
 
     public TxData(TxData txData) {
         this.dstAddr = txData.dstAddr;
-        this.paymentId = txData.paymentId;
         this.amount = txData.amount;
         this.mixin = txData.mixin;
         this.priority = txData.priority;
     }
 
     public TxData(String dstAddr,
-                  String paymentId,
                   long amount,
                   int mixin,
                   PendingTransaction.Priority priority) {
         this.dstAddr = dstAddr;
-        this.paymentId = paymentId;
         this.amount = amount;
         this.mixin = mixin;
         this.priority = priority;
@@ -51,10 +48,6 @@ public class TxData implements Parcelable {
         return dstAddr;
     }
 
-    public String getPaymentId() {
-        return paymentId;
-    }
-
     public long getAmount() {
         return amount;
     }
@@ -71,10 +64,6 @@ public class TxData implements Parcelable {
         this.dstAddr = dstAddr;
     }
 
-    public void setPaymentId(String paymentId) {
-        this.paymentId = paymentId;
-    }
-
     public void setAmount(long amount) {
         this.amount = amount;
     }
@@ -96,7 +85,6 @@ public class TxData implements Parcelable {
     }
 
     private String dstAddr;
-    private String paymentId;
     private long amount;
     private int mixin;
     private PendingTransaction.Priority priority;
@@ -106,7 +94,6 @@ public class TxData implements Parcelable {
     @Override
     public void writeToParcel(Parcel out, int flags) {
         out.writeString(dstAddr);
-        out.writeString(paymentId);
         out.writeLong(amount);
         out.writeInt(mixin);
         out.writeInt(priority.getValue());
@@ -125,7 +112,6 @@ public class TxData implements Parcelable {
 
     protected TxData(Parcel in) {
         dstAddr = in.readString();
-        paymentId = in.readString();
         amount = in.readLong();
         mixin = in.readInt();
         priority = PendingTransaction.Priority.fromInteger(in.readInt());
@@ -142,14 +128,12 @@ public class TxData implements Parcelable {
         StringBuffer sb = new StringBuffer();
         sb.append("dstAddr:");
         sb.append(dstAddr);
-        sb.append(",paymentId:");
-        sb.append(paymentId);
         sb.append(",amount:");
         sb.append(amount);
         sb.append(",mixin:");
         sb.append(mixin);
         sb.append(",priority:");
-        sb.append(String.valueOf(priority));
+        sb.append(priority);
         return sb.toString();
     }
 }

app/src/main/java/com/m2049r/xmrwallet/fragment/send/SendAddressWizardFragment.java

@@ -31,7 +31,6 @@ import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 import android.view.inputmethod.EditorInfo;
-import android.widget.Button;
 import android.widget.EditText;
 import android.widget.ImageButton;
 import android.widget.TextView;
@@ -86,12 +85,9 @@ public class SendAddressWizardFragment extends SendWizardFragment {
 
     private EditText etDummy;
     private TextInputLayout etAddress;
-    private TextInputLayout etPaymentId;
     private TextInputLayout etNotes;
-    private Button bPaymentId;
     private CardView cvScan;
     private View tvPaymentIdIntegrated;
-    private View llPaymentId;
     private TextView tvXmrTo;
     private View llXmrTo;
     private ImageButton bPasteAddress;
@@ -114,7 +110,6 @@ public class SendAddressWizardFragment extends SendWizardFragment {
         View view = inflater.inflate(R.layout.fragment_send_address, container, false);
 
         tvPaymentIdIntegrated = view.findViewById(R.id.tvPaymentIdIntegrated);
-        llPaymentId = view.findViewById(R.id.llPaymentId);
         llXmrTo = view.findViewById(R.id.llXmrTo);
         tvXmrTo = view.findViewById(R.id.tvXmrTo);
         tvXmrTo.setText(Html.fromHtml(getString(R.string.info_xmrto)));
@@ -158,8 +153,6 @@ public class SendAddressWizardFragment extends SendWizardFragment {
                 etAddress.setError(null);
                 if (isIntegratedAddress()) {
                     Timber.d("isIntegratedAddress");
-                    etPaymentId.getEditText().getText().clear();
-                    llPaymentId.setVisibility(View.INVISIBLE);
                     etAddress.setError(getString(R.string.info_paymentid_integrated));
                     tvPaymentIdIntegrated.setVisibility(View.VISIBLE);
                     llXmrTo.setVisibility(View.INVISIBLE);
@@ -169,7 +162,6 @@ public class SendAddressWizardFragment extends SendWizardFragment {
                     setBtcMode();
                 } else {
                     Timber.d("isStandardAddress or other");
-                    llPaymentId.setVisibility(View.VISIBLE);
                     tvPaymentIdIntegrated.setVisibility(View.INVISIBLE);
                     llXmrTo.setVisibility(View.INVISIBLE);
                     sendListener.setMode(SendFragment.Mode.XMR);
@@ -211,46 +203,6 @@ public class SendAddressWizardFragment extends SendWizardFragment {
             }
         });
 
-        etPaymentId = view.findViewById(R.id.etPaymentId);
-        etPaymentId.getEditText().setRawInputType(InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS);
-        etPaymentId.getEditText().setOnEditorActionListener(new TextView.OnEditorActionListener() {
-            public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
-                if ((event != null && (event.getKeyCode() == KeyEvent.KEYCODE_ENTER) && (event.getAction() == KeyEvent.ACTION_DOWN))
-                        || (actionId == EditorInfo.IME_ACTION_NEXT)) {
-                    if (checkPaymentId()) {
-                        etNotes.requestFocus();
-                    }
-                    return true;
-                }
-                return false;
-            }
-        });
-        etPaymentId.getEditText().addTextChangedListener(new TextWatcher() {
-            @Override
-            public void afterTextChanged(Editable editable) {
-                etPaymentId.setError(null);
-            }
-
-            @Override
-            public void beforeTextChanged(CharSequence s, int start, int count, int after) {
-            }
-
-            @Override
-            public void onTextChanged(CharSequence s, int start, int before, int count) {
-            }
-        });
-
-        bPaymentId = view.findViewById(R.id.bPaymentId);
-        bPaymentId.setOnClickListener(new View.OnClickListener() {
-            @Override
-            public void onClick(View v) {
-                final EditText et = etPaymentId.getEditText();
-                et.setText((Wallet.generatePaymentId()));
-                et.setSelection(et.getText().length());
-                etPaymentId.requestFocus();
-            }
-        });
-
         etNotes = view.findViewById(R.id.etNotes);
         etNotes.getEditText().setRawInputType(InputType.TYPE_CLASS_TEXT);
         etNotes.getEditText().setOnEditorActionListener(new TextView.OnEditorActionListener() {
@@ -286,8 +238,6 @@ public class SendAddressWizardFragment extends SendWizardFragment {
 
     private void setBtcMode() {
         Timber.d("setBtcMode");
-        etPaymentId.getEditText().getText().clear();
-        llPaymentId.setVisibility(View.INVISIBLE);
         tvPaymentIdIntegrated.setVisibility(View.INVISIBLE);
         llXmrTo.setVisibility(View.VISIBLE);
         sendListener.setMode(SendFragment.Mode.BTC);
@@ -342,7 +292,7 @@ public class SendAddressWizardFragment extends SendWizardFragment {
 
                 final BarcodeData barcodeData =
                         new BarcodeData(BarcodeData.Asset.BTC, address, null,
-                                resolvedBip70, null, null, String.valueOf(amount),
+                                resolvedBip70, null, String.valueOf(amount),
                                 BarcodeData.Security.BIP70);
                 etNotes.post(new Runnable() {
                     @Override
@@ -403,22 +353,6 @@ public class SendAddressWizardFragment extends SendWizardFragment {
         return BitcoinAddressValidator.validate(address);
     }
 
-    private boolean checkPaymentId() {
-        String paymentId = etPaymentId.getEditText().getText().toString();
-        boolean ok = paymentId.isEmpty() || Wallet.isPaymentIdValid(paymentId);
-        if (!ok) {
-            etPaymentId.setError(getString(R.string.receive_paymentid_invalid));
-        } else {
-            if (!paymentId.isEmpty() && isIntegratedAddress()) {
-                ok = false;
-                etPaymentId.setError(getString(R.string.receive_integrated_paymentid_invalid));
-            } else {
-                etPaymentId.setError(null);
-            }
-        }
-        return ok;
-    }
-
     private void shakeAddress() {
         etAddress.startAnimation(Helper.getShakeAnimation(getContext()));
     }
@@ -441,11 +375,6 @@ public class SendAddressWizardFragment extends SendWizardFragment {
             return false;
         }
 
-        if (!checkPaymentId()) {
-            etPaymentId.startAnimation(Helper.getShakeAnimation(getContext()));
-            return false;
-        }
-
         if (sendListener != null) {
             TxData txData = sendListener.getTxData();
             if (txData instanceof TxDataBtc) {
@@ -459,10 +388,8 @@ public class SendAddressWizardFragment extends SendWizardFragment {
                     ((TxDataBtc) txData).setBip70(null);
                 }
                 txData.setDestinationAddress(null);
-                txData.setPaymentId("");
             } else {
                 txData.setDestinationAddress(etAddress.getEditText().getText().toString());
-                txData.setPaymentId(etPaymentId.getEditText().getText().toString());
             }
             txData.setUserNotes(new UserNotes(etNotes.getEditText().getText().toString()));
             txData.setPriority(PendingTransaction.Priority.Priority_Default);
@@ -525,14 +452,6 @@ public class SendAddressWizardFragment extends SendWizardFragment {
                 etAddress.setError(null);
             }
 
-            String scannedPaymentId = barcodeData.paymentId;
-            if (scannedPaymentId != null) {
-                etPaymentId.getEditText().setText(scannedPaymentId);
-                checkPaymentId();
-            } else {
-                etPaymentId.getEditText().getText().clear();
-                etPaymentId.setError(null);
-            }
             String scannedNotes = barcodeData.description;
             if (scannedNotes != null) {
                 etNotes.getEditText().setText(scannedNotes);

app/src/main/java/com/m2049r/xmrwallet/fragment/send/SendAmountWizardFragment.java

@@ -116,12 +116,12 @@ public class SendAmountWizardFragment extends SendWizardFragment {
                 sendListener.getTxData().setAmount(Wallet.SWEEP_ALL);
             }
         } else {
-            if (!etAmount.validate(maxFunds)) {
+            if (!etAmount.validate(maxFunds, 0)) {
                 return false;
             }
 
             if (sendListener != null) {
-                String xmr = etAmount.getAmount();
+                String xmr = etAmount.getNativeAmount();
                 if (xmr != null) {
                     sendListener.getTxData().setAmount(Wallet.getAmountFromString(xmr));
                 } else {
@@ -148,8 +148,8 @@ public class SendAmountWizardFragment extends SendWizardFragment {
             tvFunds.setText(getString(R.string.send_available,
                     getString(R.string.unknown_amount)));
         }
-        // getAmount is null if exchange is in progress
-        if ((etAmount.getAmount() != null) && etAmount.getAmount().isEmpty()) {
+        // getNativeAmount is null if exchange is in progress
+        if ((etAmount.getNativeAmount() != null) && etAmount.getNativeAmount().isEmpty()) {
             final BarcodeData data = sendListener.popBarcodeData();
             if ((data != null) && (data.amount != null)) {
                 etAmount.setAmount(data.amount);

app/src/main/java/com/m2049r/xmrwallet/fragment/send/SendBtcAmountWizardFragment.java

@@ -31,7 +31,8 @@ import com.m2049r.xmrwallet.data.TxDataBtc;
 import com.m2049r.xmrwallet.model.Wallet;
 import com.m2049r.xmrwallet.util.Helper;
 import com.m2049r.xmrwallet.util.OkHttpHelper;
-import com.m2049r.xmrwallet.widget.ExchangeBtcEditText;
+import com.m2049r.xmrwallet.widget.ExchangeEditText;
+import com.m2049r.xmrwallet.widget.ExchangeOtherEditText;
 import com.m2049r.xmrwallet.widget.SendProgressView;
 import com.m2049r.xmrwallet.xmrto.XmrToError;
 import com.m2049r.xmrwallet.xmrto.XmrToException;
@@ -61,7 +62,7 @@ public class SendBtcAmountWizardFragment extends SendWizardFragment {
     }
 
     private TextView tvFunds;
-    private ExchangeBtcEditText etAmount;
+    private ExchangeOtherEditText etAmount;
 
     private TextView tvXmrToParms;
     private SendProgressView evParams;
@@ -97,7 +98,7 @@ public class SendBtcAmountWizardFragment extends SendWizardFragment {
         }
         if (sendListener != null) {
             TxDataBtc txDataBtc = (TxDataBtc) sendListener.getTxData();
-            String btcString = etAmount.getAmount();
+            String btcString = etAmount.getNativeAmount();
             if (btcString != null) {
                 try {
                     double btc = Double.parseDouble(btcString);
@@ -166,7 +167,7 @@ public class SendBtcAmountWizardFragment extends SendWizardFragment {
         getView().post(new Runnable() {
             @Override
             public void run() {
-                etAmount.setRate(1.0d / orderParameters.getPrice());
+                etAmount.setExchangeRate(1.0d / orderParameters.getPrice());
                 NumberFormat df = NumberFormat.getInstance(Locale.US);
                 df.setMaximumFractionDigits(6);
                 String min = df.format(orderParameters.getLowerLimit());
@@ -206,7 +207,7 @@ public class SendBtcAmountWizardFragment extends SendWizardFragment {
     }
 
     private void processOrderParmsError(final Exception ex) {
-        etAmount.setRate(0);
+        etAmount.setExchangeRate(0);
         orderParameters = null;
         maxBtc = 0;
         minBtc = 0;

app/src/main/java/com/m2049r/xmrwallet/fragment/send/SendBtcConfirmWizardFragment.java

@@ -16,24 +16,15 @@
 
 package com.m2049r.xmrwallet.fragment.send;
 
-import android.app.Activity;
-import android.content.DialogInterface;
 import android.os.Bundle;
 import android.os.Handler;
-import android.support.design.widget.TextInputLayout;
-import android.text.Editable;
-import android.text.TextWatcher;
-import android.view.KeyEvent;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
-import android.view.WindowManager;
-import android.view.inputmethod.EditorInfo;
 import android.widget.Button;
 import android.widget.TextView;
 import android.widget.Toast;
 
-import com.m2049r.xmrwallet.BuildConfig;
 import com.m2049r.xmrwallet.R;
 import com.m2049r.xmrwallet.data.TxData;
 import com.m2049r.xmrwallet.data.TxDataBtc;
@@ -346,103 +337,18 @@ public class SendBtcConfirmWizardFragment extends SendWizardFragment implements
     }
 
     public void preSend() {
-        final Activity activity = getActivity();
-        View promptsView = getLayoutInflater().inflate(R.layout.prompt_password, null);
-        android.app.AlertDialog.Builder alertDialogBuilder = new android.app.AlertDialog.Builder(activity);
-        alertDialogBuilder.setView(promptsView);
-
-        final TextInputLayout etPassword = promptsView.findViewById(R.id.etPassword);
-        etPassword.setHint(getString(R.string.prompt_send_password));
-
-        etPassword.getEditText().addTextChangedListener(new TextWatcher() {
+        Helper.promptPassword(getContext(), getActivityCallback().getWalletName(), false, new Helper.PasswordAction() {
             @Override
-            public void afterTextChanged(Editable s) {
-                if (etPassword.getError() != null) {
-                    etPassword.setError(null);
-                }
+            public void act(String walletName, String password, boolean fingerprintUsed) {
+                send();
             }
 
-            @Override
-            public void beforeTextChanged(CharSequence s, int start,
-                                          int count, int after) {
-            }
-
-            @Override
-            public void onTextChanged(CharSequence s, int start,
-                                      int before, int count) {
-            }
-        });
-
-        alertDialogBuilder
-                .setCancelable(false)
-                .setPositiveButton(getString(R.string.label_ok), new DialogInterface.OnClickListener() {
-                    public void onClick(DialogInterface dialog, int id) {
-                        String pass = etPassword.getEditText().getText().toString();
-                        if (getActivityCallback().verifyWalletPassword(pass)) {
-                            dialog.dismiss();
-                            Helper.hideKeyboardAlways(activity);
-                            send();
-                        } else {
-                            etPassword.setError(getString(R.string.bad_password));
-                        }
-                    }
-                })
-                .setNegativeButton(getString(R.string.label_cancel),
-                        new DialogInterface.OnClickListener() {
-                            public void onClick(DialogInterface dialog, int id) {
-                                Helper.hideKeyboardAlways(activity);
-                                dialog.cancel();
-                                bSend.setEnabled(sendCountdown > 0); // allow to try again
-                            }
-                        });
-
-        final android.app.AlertDialog passwordDialog = alertDialogBuilder.create();
-        passwordDialog.setOnShowListener(new DialogInterface.OnShowListener() {
-            @Override
-            public void onShow(DialogInterface dialog) {
-                Button button = ((android.app.AlertDialog) dialog).getButton(android.app.AlertDialog.BUTTON_POSITIVE);
-                button.setOnClickListener(new View.OnClickListener() {
-                    @Override
-                    public void onClick(View view) {
-                        String pass = etPassword.getEditText().getText().toString();
-                        if (getActivityCallback().verifyWalletPassword(pass)) {
-                            Helper.hideKeyboardAlways(activity);
-                            passwordDialog.dismiss();
-                            send();
-                        } else {
-                            etPassword.setError(getString(R.string.bad_password));
-                        }
-                    }
+            public void fail(String walletName, String password, boolean fingerprintUsed) {
+                getActivity().runOnUiThread(() -> {
+                    bSend.setEnabled(sendCountdown > 0); // allow to try again
                 });
             }
         });
-
-        Helper.showKeyboard(passwordDialog);
-
-        // accept keyboard "ok"
-        etPassword.getEditText().setOnEditorActionListener(new TextView.OnEditorActionListener() {
-            public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
-                if ((event != null && (event.getKeyCode() == KeyEvent.KEYCODE_ENTER) && (event.getAction() == KeyEvent.ACTION_DOWN))
-                        || (actionId == EditorInfo.IME_ACTION_DONE)) {
-                    String pass = etPassword.getEditText().getText().toString();
-                    if (getActivityCallback().verifyWalletPassword(pass)) {
-                        Helper.hideKeyboardAlways(activity);
-                        passwordDialog.dismiss();
-                        send();
-                    } else {
-                        etPassword.setError(getString(R.string.bad_password));
-                    }
-                    return true;
-                }
-                return false;
-            }
-        });
-
-        if (Helper.preventScreenshot()) {
-            passwordDialog.getWindow().setFlags(WindowManager.LayoutParams.FLAG_SECURE, WindowManager.LayoutParams.FLAG_SECURE);
-        }
-
-        passwordDialog.show();
     }
 
     // creates a pending transaction and calls us back with transactionCreated()
@@ -457,9 +363,8 @@ public class SendBtcConfirmWizardFragment extends SendWizardFragment implements
         }
         showProgress(3, getString(R.string.label_send_progress_create_tx));
         TxData txData = sendListener.getTxData();
-        txData.setDestinationAddress(xmrtoStatus.getXmrReceivingAddress());
-        txData.setPaymentId(xmrtoStatus.getXmrRequiredPaymentIdShort());
-        txData.setAmount(Wallet.getAmountFromDouble(xmrtoStatus.getXmrAmountTotal()));
+        txData.setDestinationAddress(xmrtoStatus.getReceivingSubaddress());
+        txData.setAmount(Wallet.getAmountFromDouble(xmrtoStatus.getIncomingAmountTotal()));
         getActivityCallback().onPrepareSend(xmrtoStatus.getUuid(), txData);
     }
 
@@ -573,22 +478,22 @@ public class SendBtcConfirmWizardFragment extends SendWizardFragment implements
                     NumberFormat df = NumberFormat.getInstance(Locale.US);
                     df.setMaximumFractionDigits(12);
                     String btcAmount = df.format(status.getBtcAmount());
-                    String xmrAmountTotal = df.format(status.getXmrAmountTotal());
+                    String xmrAmountTotal = df.format(status.getIncomingAmountTotal());
                     tvTxBtcAmount.setText(getString(R.string.text_send_btc_amount, btcAmount, xmrAmountTotal));
-                    String xmrPriceBtc = df.format(status.getXmrPriceBtc());
+                    String xmrPriceBtc = df.format(status.getIncomingPriceBtc());
                     tvTxBtcRate.setText(getString(R.string.text_send_btc_rate, xmrPriceBtc));
 
-                    double calcRate = status.getBtcAmount() / status.getXmrPriceBtc();
-                    Timber.i("Rates: %f / %f", calcRate, status.getXmrPriceBtc());
+                    double calcRate = status.getBtcAmount() / status.getIncomingPriceBtc();
+                    Timber.d("Rates: %f / %f", calcRate, status.getIncomingPriceBtc());
 
                     tvTxBtcAddress.setText(status.getBtcDestAddress()); // TODO test if this is different?
 
-                    Timber.i("Expires @ %s, in %s seconds", status.getExpiresAt().toString(), status.getSecondsTillTimeout());
+                    Timber.d("Expires @ %s, in %s seconds", status.getExpiresAt().toString(), status.getSecondsTillTimeout());
 
-                    Timber.i("Status = %s", status.getState().toString());
+                    Timber.d("Status = %s", status.getState().toString());
                     tvTxXmrToKey.setText(status.getUuid());
 
-                    Timber.d("AmountRemaining=%f, XmrAmountTotal=%f", status.getXmrAmountRemaining(), status.getXmrAmountTotal());
+                    Timber.d("AmountRemaining=%f, XmrAmountTotal=%f", status.getRemainingAmountIncoming(), status.getIncomingAmountTotal());
                     hideProgress();
                     startSendTimer();
                     prepareSend();

app/src/main/java/com/m2049r/xmrwallet/fragment/send/SendBtcSuccessWizardFragment.java

@@ -138,12 +138,6 @@ public class SendBtcSuccessWizardFragment extends SendWizardFragment {
 
         btcData = (TxDataBtc) sendListener.getTxData();
         tvTxAddress.setText(btcData.getDestinationAddress());
-        String paymentId = btcData.getPaymentId();
-        if ((paymentId != null) && (!paymentId.isEmpty())) {
-            tvTxPaymentId.setText(btcData.getPaymentId());
-        } else {
-            tvTxPaymentId.setText("-");
-        }
 
         final PendingTx committedTx = sendListener.getCommittedTx();
         if (committedTx != null) {

app/src/main/java/com/m2049r/xmrwallet/fragment/send/SendConfirmWizardFragment.java

@@ -16,29 +16,19 @@
 
 package com.m2049r.xmrwallet.fragment.send;
 
-import android.app.Activity;
-import android.content.DialogInterface;
 import android.os.Bundle;
-import android.support.design.widget.TextInputLayout;
 import android.support.v7.app.AlertDialog;
-import android.text.Editable;
-import android.text.TextWatcher;
-import android.view.KeyEvent;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
-import android.view.WindowManager;
-import android.view.inputmethod.EditorInfo;
-import android.widget.Button;
 import android.widget.TextView;
 
-import com.m2049r.xmrwallet.BuildConfig;
 import com.m2049r.xmrwallet.R;
 import com.m2049r.xmrwallet.data.TxData;
+import com.m2049r.xmrwallet.data.UserNotes;
 import com.m2049r.xmrwallet.model.PendingTransaction;
 import com.m2049r.xmrwallet.model.Wallet;
 import com.m2049r.xmrwallet.util.Helper;
-import com.m2049r.xmrwallet.data.UserNotes;
 
 import timber.log.Timber;
 
@@ -70,7 +60,6 @@ public class SendConfirmWizardFragment extends SendWizardFragment implements Sen
     }
 
     private TextView tvTxAddress;
-    private TextView tvTxPaymentId;
     private TextView tvTxNotes;
     private TextView tvTxAmount;
     private TextView tvTxFee;
@@ -90,7 +79,6 @@ public class SendConfirmWizardFragment extends SendWizardFragment implements Sen
                 R.layout.fragment_send_confirm, container, false);
 
         tvTxAddress = view.findViewById(R.id.tvTxAddress);
-        tvTxPaymentId = view.findViewById(R.id.tvTxPaymentId);
         tvTxNotes = view.findViewById(R.id.tvTxNotes);
         tvTxAmount = view.findViewById(R.id.tvTxAmount);
         tvTxFee = view.findViewById(R.id.tvTxFee);
@@ -143,7 +131,12 @@ public class SendConfirmWizardFragment extends SendWizardFragment implements Sen
 
     void send() {
         sendListener.commitTransaction();
-        pbProgressSend.setVisibility(View.VISIBLE);
+        getActivity().runOnUiThread(new Runnable() {
+            @Override
+            public void run() {
+                pbProgressSend.setVisibility(View.VISIBLE);
+            }
+        });
     }
 
     @Override
@@ -192,12 +185,6 @@ public class SendConfirmWizardFragment extends SendWizardFragment implements Sen
 
         final TxData txData = sendListener.getTxData();
         tvTxAddress.setText(txData.getDestinationAddress());
-        String paymentId = txData.getPaymentId();
-        if ((paymentId != null) && (!paymentId.isEmpty())) {
-            tvTxPaymentId.setText(txData.getPaymentId());
-        } else {
-            tvTxPaymentId.setText("-");
-        }
         UserNotes notes = sendListener.getTxData().getUserNotes();
         if ((notes != null) && (!notes.note.isEmpty())) {
             tvTxNotes.setText(notes.note);
@@ -233,103 +220,18 @@ public class SendConfirmWizardFragment extends SendWizardFragment implements Sen
     }
 
     public void preSend() {
-        final Activity activity = getActivity();
-        View promptsView = getLayoutInflater().inflate(R.layout.prompt_password, null);
-        android.app.AlertDialog.Builder alertDialogBuilder = new android.app.AlertDialog.Builder(activity);
-        alertDialogBuilder.setView(promptsView);
-
-        final TextInputLayout etPassword = promptsView.findViewById(R.id.etPassword);
-        etPassword.setHint(getString(R.string.prompt_send_password));
-
-        etPassword.getEditText().addTextChangedListener(new TextWatcher() {
+        Helper.promptPassword(getContext(), getActivityCallback().getWalletName(), false, new Helper.PasswordAction() {
             @Override
-            public void afterTextChanged(Editable s) {
-                if (etPassword.getError() != null) {
-                    etPassword.setError(null);
-                }
+            public void act(String walletName, String password, boolean fingerprintUsed) {
+                send();
             }
 
-            @Override
-            public void beforeTextChanged(CharSequence s, int start,
-                                          int count, int after) {
-            }
-
-            @Override
-            public void onTextChanged(CharSequence s, int start,
-                                      int before, int count) {
-            }
-        });
-
-        alertDialogBuilder
-                .setCancelable(false)
-                .setPositiveButton(getString(R.string.label_ok), new DialogInterface.OnClickListener() {
-                    public void onClick(DialogInterface dialog, int id) {
-                        String pass = etPassword.getEditText().getText().toString();
-                        if (getActivityCallback().verifyWalletPassword(pass)) {
-                            dialog.dismiss();
-                            Helper.hideKeyboardAlways(activity);
-                            send();
-                        } else {
-                            etPassword.setError(getString(R.string.bad_password));
-                        }
-                    }
-                })
-                .setNegativeButton(getString(R.string.label_cancel),
-                        new DialogInterface.OnClickListener() {
-                            public void onClick(DialogInterface dialog, int id) {
-                                Helper.hideKeyboardAlways(activity);
-                                dialog.cancel();
-                                bSend.setEnabled(true); // allow to try again
-                            }
-                        });
-
-        final android.app.AlertDialog passwordDialog = alertDialogBuilder.create();
-        passwordDialog.setOnShowListener(new DialogInterface.OnShowListener() {
-            @Override
-            public void onShow(DialogInterface dialog) {
-                Button button = ((android.app.AlertDialog) dialog).getButton(android.app.AlertDialog.BUTTON_POSITIVE);
-                button.setOnClickListener(new View.OnClickListener() {
-                    @Override
-                    public void onClick(View view) {
-                        String pass = etPassword.getEditText().getText().toString();
-                        if (getActivityCallback().verifyWalletPassword(pass)) {
-                            Helper.hideKeyboardAlways(activity);
-                            passwordDialog.dismiss();
-                            send();
-                        } else {
-                            etPassword.setError(getString(R.string.bad_password));
-                        }
-                    }
+            public void fail(String walletName, String password, boolean fingerprintUsed) {
+                getActivity().runOnUiThread(() -> {
+                    bSend.setEnabled(true); // allow to try again
                 });
             }
         });
-
-        Helper.showKeyboard(passwordDialog);
-
-        // accept keyboard "ok"
-        etPassword.getEditText().setOnEditorActionListener(new TextView.OnEditorActionListener() {
-            public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
-                if ((event != null && (event.getKeyCode() == KeyEvent.KEYCODE_ENTER) && (event.getAction() == KeyEvent.ACTION_DOWN))
-                        || (actionId == EditorInfo.IME_ACTION_DONE)) {
-                    String pass = etPassword.getEditText().getText().toString();
-                    if (getActivityCallback().verifyWalletPassword(pass)) {
-                        Helper.hideKeyboardAlways(activity);
-                        passwordDialog.dismiss();
-                        send();
-                    } else {
-                        etPassword.setError(getString(R.string.bad_password));
-                    }
-                    return true;
-                }
-                return false;
-            }
-        });
-
-        if (Helper.preventScreenshot()) {
-            passwordDialog.getWindow().setFlags(WindowManager.LayoutParams.FLAG_SECURE, WindowManager.LayoutParams.FLAG_SECURE);
-        }
-
-        passwordDialog.show();
     }
 
     // creates a pending transaction and calls us back with transactionCreated()

app/src/main/java/com/m2049r/xmrwallet/fragment/send/SendFragment.java

@@ -75,7 +75,7 @@ public class SendFragment extends Fragment
 
         void onPrepareSend(String tag, TxData data);
 
-        boolean verifyWalletPassword(String password);
+        String getWalletName();
 
         void onSend(UserNotes notes);
 

app/src/main/java/com/m2049r/xmrwallet/fragment/send/SendSuccessWizardFragment.java

@@ -111,12 +111,6 @@ public class SendSuccessWizardFragment extends SendWizardFragment {
 
         final TxData txData = sendListener.getTxData();
         tvTxAddress.setText(txData.getDestinationAddress());
-        String paymentId = txData.getPaymentId();
-        if ((paymentId != null) && (!paymentId.isEmpty())) {
-            tvTxPaymentId.setText(txData.getPaymentId());
-        } else {
-            tvTxPaymentId.setText("-");
-        }
 
         final PendingTx committedTx = sendListener.getCommittedTx();
         if (committedTx != null) {

app/src/main/java/com/m2049r/xmrwallet/layout/NodeInfoAdapter.java

@@ -130,9 +130,9 @@ public class NodeInfoAdapter extends RecyclerView.Adapter<NodeInfoAdapter.ViewHo
 
         private void showStar() {
             if (nodeItem.isFavourite()) {
-                ibBookmark.setImageResource(R.drawable.ic_bookmark_24dp);
+                ibBookmark.setImageResource(R.drawable.ic_favorite_24dp);
             } else {
-                ibBookmark.setImageResource(R.drawable.ic_bookmark_border_24dp);
+                ibBookmark.setImageResource(R.drawable.ic_favorite_border_24dp);
             }
         }
 

app/src/main/java/com/m2049r/xmrwallet/ledger/Instruction.java

@@ -17,12 +17,15 @@
 package com.m2049r.xmrwallet.ledger;
 
 public enum Instruction {
+
     INS_NONE(0x00),
     INS_RESET(0x02),
     INS_GET_KEY(0x20),
+    INS_DISPLAY_ADDRESS(0x21),
     INS_PUT_KEY(0x22),
     INS_GET_CHACHA8_PREKEY(0x24),
     INS_VERIFY_KEY(0x26),
+    INS_MANAGE_SEEDWORDS(0x28),
 
     INS_SECRET_KEY_TO_PUBLIC_KEY(0x30),
     INS_GEN_KEY_DERIVATION(0x32),
@@ -30,6 +33,7 @@ public enum Instruction {
     INS_DERIVE_PUBLIC_KEY(0x36),
     INS_DERIVE_SECRET_KEY(0x38),
     INS_GEN_KEY_IMAGE(0x3A),
+
     INS_SECRET_KEY_ADD(0x3C),
     INS_SECRET_KEY_SUB(0x3E),
     INS_GENERATE_KEYPAIR(0x40),
@@ -45,15 +49,20 @@ public enum Instruction {
     INS_SET_SIGNATURE_MODE(0x72),
     INS_GET_ADDITIONAL_KEY(0x74),
     INS_STEALTH(0x76),
+    INS_GEN_COMMITMENT_MASK(0x77),
     INS_BLIND(0x78),
     INS_UNBLIND(0x7A),
+    INS_GEN_TXOUT_KEYS(0x7B),
     INS_VALIDATE(0x7C),
+    INS_PREFIX_HASH(0x7D),
     INS_MLSAG(0x7E),
     INS_CLOSE_TX(0x80),
 
-    INS_GET_RESPONSE(0xc0),
+    INS_GET_TX_PROOF(0xA0),
 
-    INS_UNDEFINED(0xff);
+    INS_GET_RESPONSE(0xC0),
+
+    INS_UNDEFINED(0xFF);
 
     public static Instruction fromByte(byte n) {
         switch (n & 0xFF) {

app/src/main/java/com/m2049r/xmrwallet/ledger/Ledger.java

@@ -42,11 +42,11 @@ public class Ledger {
     static public final int LOOKAHEAD_SUBADDRESSES = 20;
     static public final String SUBADDRESS_LOOKAHEAD = LOOKAHEAD_ACCOUNTS + ":" + LOOKAHEAD_SUBADDRESSES;
 
-    private static final byte PROTOCOL_VERSION = 0x02;
+    private static final byte PROTOCOL_VERSION = 0x03;
     public static final int SW_OK = 0x9000;
     public static final int SW_INS_NOT_SUPPORTED = 0x6D00;
     public static final int OK[] = {SW_OK};
-    public static final int MINIMUM_LEDGER_VERSION = (1 << 16) + (3 << 8) + (1); // 1.3.1
+    public static final int MINIMUM_LEDGER_VERSION = (1 << 16) + (6 << 8) + (0); // 1.6.0
 
     public static UsbDevice findDevice(UsbManager usbManager) {
         if (!ENABLED) return null;

app/src/main/java/com/m2049r/xmrwallet/ledger/LedgerProgressDialog.java

@@ -51,6 +51,7 @@ public class LedgerProgressDialog extends ProgressDialog implements Ledger.Liste
                     switch (ins) {
                         case INS_RESET: // ledger may ask for confirmation - maybe a bug?
                         case INS_GET_KEY: // ledger asks for confirmation to send keys
+                        case INS_DISPLAY_ADDRESS:
                             setIndeterminate(true);
                             setMessage(getContext().getString(R.string.progress_ledger_confirm));
                             break;
@@ -102,6 +103,11 @@ public class LedgerProgressDialog extends ProgressDialog implements Ledger.Liste
                                 setMessage(getContext().getString(R.string.progress_ledger_mlsag));
                             }
                             break;
+                        case INS_PREFIX_HASH:
+                            if ((apdu[2] != 1) || (apdu[3] != 0)) break;
+                            setIndeterminate(true);
+                            setMessage(getContext().getString(R.string.progress_ledger_confirm));
+                            break;
                         case INS_VALIDATE:
                             if ((apdu[2] != 1) || (apdu[3] != 1)) break;
                             validate = true;

app/src/main/java/com/m2049r/xmrwallet/model/Wallet.java

@@ -248,7 +248,13 @@ public class Wallet {
 
     public native long getDaemonBlockChainTargetHeight();
 
-    public native boolean isSynchronized();
+    public native boolean isSynchronizedJ();
+
+    public boolean isSynchronized() {
+        final long daemonHeight = getDaemonBlockChainHeight();
+        if (daemonHeight == 0) return false;
+        return isSynchronizedJ() && (getBlockChainHeight() == daemonHeight);
+    }
 
     public static native String getDisplayAmount(long amount);
 
@@ -278,6 +284,8 @@ public class Wallet {
 
     public native void refreshAsync();
 
+    public native void rescanBlockchainAsync();
+
 //TODO virtual void setAutoRefreshInterval(int millis) = 0;
 //TODO virtual int autoRefreshInterval() const = 0;
 
@@ -298,22 +306,21 @@ public class Wallet {
     public PendingTransaction createTransaction(TxData txData) {
         return createTransaction(
                 txData.getDestinationAddress(),
-                txData.getPaymentId(),
                 txData.getAmount(),
                 txData.getMixin(),
                 txData.getPriority());
     }
 
-    public PendingTransaction createTransaction(String dst_addr, String payment_id,
+    public PendingTransaction createTransaction(String dst_addr,
                                                 long amount, int mixin_count,
                                                 PendingTransaction.Priority priority) {
         disposePendingTransaction();
         int _priority = priority.getValue();
         long txHandle =
                 (amount == SWEEP_ALL ?
-                        createSweepTransaction(dst_addr, payment_id, mixin_count, _priority,
+                        createSweepTransaction(dst_addr, "", mixin_count, _priority,
                                 accountIndex) :
-                        createTransactionJ(dst_addr, payment_id, amount, mixin_count, _priority,
+                        createTransactionJ(dst_addr, "", amount, mixin_count, _priority,
                                 accountIndex));
         pendingTransaction = new PendingTransaction(txHandle);
         return pendingTransaction;

app/src/main/java/com/m2049r/xmrwallet/onboarding/OnBoardingActivity.java

@@ -0,0 +1,122 @@
+/*
+ * Copyright (c) 2018-2020 EarlOfEgo, m2049r
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.m2049r.xmrwallet.onboarding;
+
+import android.content.Intent;
+import android.os.Bundle;
+import android.support.design.widget.TabLayout;
+import android.support.v4.view.ViewPager;
+import android.support.v7.app.AppCompatActivity;
+import android.util.TypedValue;
+import android.view.View;
+import android.widget.Button;
+import android.widget.LinearLayout;
+
+import com.m2049r.xmrwallet.LoginActivity;
+import com.m2049r.xmrwallet.R;
+import com.m2049r.xmrwallet.util.KeyStoreHelper;
+
+public class OnBoardingActivity extends AppCompatActivity implements OnBoardingAdapter.Listener {
+
+    private OnBoardingViewPager pager;
+    private OnBoardingAdapter pagerAdapter;
+    private Button nextButton;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_on_boarding);
+
+        nextButton = findViewById(R.id.buttonNext);
+
+        pager = findViewById(R.id.pager);
+        pagerAdapter = new OnBoardingAdapter(getApplicationContext(), this);
+        pager.setAdapter(pagerAdapter);
+        int pixels = (int) TypedValue.applyDimension(
+                TypedValue.COMPLEX_UNIT_DIP, 16, getResources().getDisplayMetrics());
+        pager.setPageMargin(pixels);
+        pager.addOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
+            @Override
+            public void onPageSelected(int position) {
+                setButtonState(position);
+            }
+        });
+
+        final TabLayout tabLayout = (TabLayout) findViewById(R.id.tabLayout);
+        if (pagerAdapter.getCount() > 1) {
+            tabLayout.setupWithViewPager(pager, true);
+            LinearLayout tabStrip = ((LinearLayout) tabLayout.getChildAt(0));
+            for (int i = 0; i < tabStrip.getChildCount(); i++) {
+                tabStrip.getChildAt(i).setClickable(false);
+            }
+        } else {
+            tabLayout.setVisibility(View.GONE);
+        }
+
+        nextButton.setOnClickListener(v -> {
+            final int item = pager.getCurrentItem();
+            if (item + 1 >= pagerAdapter.getCount()) {
+                finishOnboarding();
+            } else {
+                pager.setCurrentItem(item + 1);
+            }
+        });
+
+        // let old users who have fingerprint wallets already agree for fingerprint sending
+        OnBoardingScreen.FPSEND.setMustAgree(KeyStoreHelper.hasStoredPasswords(this));
+
+        for (int i = 0; i < OnBoardingScreen.values().length; i++) {
+            agreed[i] = !OnBoardingScreen.values()[i].isMustAgree();
+        }
+
+        setButtonState(0);
+    }
+
+    private void finishOnboarding() {
+        nextButton.setEnabled(false);
+        OnBoardingManager.setOnBoardingShown(getApplicationContext());
+        startActivity(new Intent(this, LoginActivity.class));
+        finish();
+    }
+
+    boolean[] agreed = new boolean[OnBoardingScreen.values().length];
+
+    @Override
+    public void setAgreeClicked(int position, boolean isChecked) {
+        agreed[position] = isChecked;
+        setButtonState(position);
+    }
+
+    @Override
+    public boolean isAgreeClicked(int position) {
+        return agreed[position];
+    }
+
+    @Override
+    public void setButtonState(int position) {
+        nextButton.setEnabled(agreed[position]);
+        if (nextButton.isEnabled())
+            pager.setAllowedSwipeDirection(OnBoardingViewPager.SwipeDirection.ALL);
+        else
+            pager.setAllowedSwipeDirection(OnBoardingViewPager.SwipeDirection.LEFT);
+        if (pager.getCurrentItem() + 1 == pagerAdapter.getCount()) { // last page
+            nextButton.setText(R.string.onboarding_button_ready);
+        } else {
+            nextButton.setText(R.string.onboarding_button_next);
+        }
+    }
+}

app/src/main/java/com/m2049r/xmrwallet/onboarding/OnBoardingAdapter.java

@@ -0,0 +1,91 @@
+/*
+ * Copyright (c) 2018-2020 EarlOfEgo, m2049r
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.m2049r.xmrwallet.onboarding;
+
+import android.content.Context;
+import android.graphics.drawable.Drawable;
+import android.support.annotation.NonNull;
+import android.support.v4.content.ContextCompat;
+import android.support.v4.view.PagerAdapter;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.CheckBox;
+import android.widget.ImageView;
+import android.widget.TextView;
+
+import com.m2049r.xmrwallet.R;
+
+import timber.log.Timber;
+
+public class OnBoardingAdapter extends PagerAdapter {
+
+    interface Listener {
+        void setAgreeClicked(int position, boolean isChecked);
+
+        boolean isAgreeClicked(int position);
+
+        void setButtonState(int position);
+    }
+
+    private final Context context;
+    private Listener listener;
+
+    OnBoardingAdapter(final Context context, final Listener listener) {
+        this.context = context;
+        this.listener = listener;
+    }
+
+    @NonNull
+    @Override
+    public Object instantiateItem(@NonNull ViewGroup collection, int position) {
+        LayoutInflater inflater = LayoutInflater.from(context);
+        final View view = inflater.inflate(R.layout.view_onboarding, collection, false);
+        final OnBoardingScreen onBoardingScreen = OnBoardingScreen.values()[position];
+
+        final Drawable drawable = ContextCompat.getDrawable(context, onBoardingScreen.getDrawable());
+        ((ImageView) view.findViewById(R.id.onboardingImage)).setImageDrawable(drawable);
+        ((TextView) view.findViewById(R.id.onboardingTitle)).setText(onBoardingScreen.getTitle());
+        ((TextView) view.findViewById(R.id.onboardingInformation)).setText(onBoardingScreen.getInformation());
+        if (onBoardingScreen.isMustAgree()) {
+            final CheckBox agree = ((CheckBox) view.findViewById(R.id.onboardingAgree));
+            agree.setVisibility(View.VISIBLE);
+            agree.setChecked(listener.isAgreeClicked(position));
+            agree.setOnClickListener(v -> {
+                listener.setAgreeClicked(position, ((CheckBox) v).isChecked());
+            });
+        }
+        collection.addView(view);
+        return view;
+    }
+
+    @Override
+    public int getCount() {
+        return OnBoardingScreen.values().length;
+    }
+
+    @Override
+    public void destroyItem(@NonNull ViewGroup collection, int position, @NonNull Object view) {
+        Timber.d("destroy " + position);
+        collection.removeView((View) view);
+    }
+
+    @Override
+    public boolean isViewFromObject(@NonNull final View view, @NonNull final Object object) {
+        return view == object;
+    }
+}

app/src/main/java/com/m2049r/xmrwallet/onboarding/OnBoardingManager.java

@@ -0,0 +1,51 @@
+/*
+ * Copyright (c) 2018-2020 EarlOfEgo, m2049r
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.m2049r.xmrwallet.onboarding;
+
+import android.content.Context;
+import android.content.SharedPreferences;
+
+import com.m2049r.xmrwallet.util.KeyStoreHelper;
+
+import java.util.Date;
+
+import timber.log.Timber;
+
+public class OnBoardingManager {
+
+    private static final String PREFS_ONBOARDING = "PREFS_ONBOARDING";
+    private static final String ONBOARDING_SHOWN = "ONBOARDING_SHOWN";
+
+    public static boolean shouldShowOnBoarding(final Context context) {
+        return !getSharedPreferences(context).contains(ONBOARDING_SHOWN);
+    }
+
+    public static void setOnBoardingShown(final Context context) {
+        Timber.d("Set onboarding shown.");
+        SharedPreferences sharedPreferences = getSharedPreferences(context);
+        sharedPreferences.edit().putLong(ONBOARDING_SHOWN, new Date().getTime()).apply();
+    }
+
+    public static void clearOnBoardingShown(final Context context) {
+        SharedPreferences sharedPreferences = getSharedPreferences(context);
+        sharedPreferences.edit().remove(ONBOARDING_SHOWN).apply();
+    }
+
+    private static SharedPreferences getSharedPreferences(final Context context) {
+        return context.getSharedPreferences(PREFS_ONBOARDING, Context.MODE_PRIVATE);
+    }
+}

app/src/main/java/com/m2049r/xmrwallet/onboarding/OnBoardingScreen.java

@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 2018-2020 EarlOfEgo, m2049r
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.m2049r.xmrwallet.onboarding;
+
+import com.m2049r.xmrwallet.R;
+
+enum OnBoardingScreen {
+    WELCOME(R.string.onboarding_welcome_title, R.string.onboarding_welcome_information, R.drawable.ic_onboarding_welcome, false),
+    SEED(R.string.onboarding_seed_title, R.string.onboarding_seed_information, R.drawable.ic_onboarding_seed, true),
+    FPSEND(R.string.onboarding_fpsend_title, R.string.onboarding_fpsend_information, R.drawable.ic_onboarding_fingerprint, false),
+    XMRTO(R.string.onboarding_xmrto_title, R.string.onboarding_xmrto_information, R.drawable.ic_onboarding_xmrto, false),
+    NODES(R.string.onboarding_nodes_title, R.string.onboarding_nodes_information, R.drawable.ic_onboarding_nodes, false);
+
+    private final int title;
+    private final int information;
+    private final int drawable;
+    private boolean mustAgree;
+
+    OnBoardingScreen(final int title, final int information, final int drawable, final boolean mustAgree) {
+        this.title = title;
+        this.information = information;
+        this.drawable = drawable;
+        this.mustAgree = mustAgree;
+    }
+
+    public int getTitle() {
+        return title;
+    }
+
+    public int getInformation() {
+        return information;
+    }
+
+    public int getDrawable() {
+        return drawable;
+    }
+
+    public boolean isMustAgree() {
+        return mustAgree;
+    }
+
+    public boolean setMustAgree(boolean mustAgree) {
+        return this.mustAgree = mustAgree;
+    }
+}

app/src/main/java/com/m2049r/xmrwallet/onboarding/OnBoardingViewPager.java

@@ -0,0 +1,85 @@
+/*
+ * Copyright (c) 2020 m2049r
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+// based on https://stackoverflow.com/a/34076649
+
+package com.m2049r.xmrwallet.onboarding;
+
+import android.content.Context;
+import android.support.v4.view.ViewPager;
+import android.util.AttributeSet;
+import android.view.MotionEvent;
+
+public class OnBoardingViewPager extends ViewPager {
+
+    public enum SwipeDirection {
+        ALL, LEFT, RIGHT, NONE;
+    }
+
+    private float initialXValue;
+    private SwipeDirection direction;
+
+    public OnBoardingViewPager(Context context, AttributeSet attrs) {
+        super(context, attrs);
+        this.direction = SwipeDirection.ALL;
+    }
+
+    @Override
+    public boolean onTouchEvent(MotionEvent event) {
+        if (this.IsSwipeAllowed(event)) {
+            return super.onTouchEvent(event);
+        }
+
+        return false;
+    }
+
+    @Override
+    public boolean onInterceptTouchEvent(MotionEvent event) {
+        if (this.IsSwipeAllowed(event)) {
+            return super.onInterceptTouchEvent(event);
+        }
+
+        return false;
+    }
+
+    private boolean IsSwipeAllowed(MotionEvent event) {
+        if (this.direction == SwipeDirection.ALL) return true;
+
+        if (direction == SwipeDirection.NONE)//disable any swipe
+            return false;
+
+        if (event.getAction() == MotionEvent.ACTION_DOWN) {
+            initialXValue = event.getX();
+            return true;
+        }
+
+        if (event.getAction() == MotionEvent.ACTION_MOVE) {
+            float diffX = event.getX() - initialXValue;
+            if (diffX > 0 && direction == SwipeDirection.RIGHT) {
+                // swipe from left to right detected
+                return false;
+            } else if (diffX < 0 && direction == SwipeDirection.LEFT) {
+                // swipe from right to left detected
+                return false;
+            }
+        }
+
+        return true;
+    }
+
+    public void setAllowedSwipeDirection(SwipeDirection direction) {
+        this.direction = direction;
+    }
+}

app/src/main/java/com/m2049r/xmrwallet/service/WalletService.java

@@ -281,97 +281,114 @@ public class WalletService extends Service {
                 case START_SERVICE: {
                     Bundle extras = msg.getData();
                     String cmd = extras.getString(REQUEST, null);
-                    if (cmd.equals(REQUEST_CMD_LOAD)) {
-                        String walletId = extras.getString(REQUEST_WALLET, null);
-                        String walletPw = extras.getString(REQUEST_CMD_LOAD_PW, null);
-                        Timber.d("LOAD wallet %s", walletId);
-                        if (walletId != null) {
-                            showProgress(getString(R.string.status_wallet_loading));
-                            showProgress(10);
-                            Wallet.Status walletStatus = start(walletId, walletPw);
-                            if (observer != null) observer.onWalletStarted(walletStatus);
-                            if ((walletStatus == null) || !walletStatus.isOk()) {
-                                errorState = true;
-                                stop();
-                            }
-                        }
-                    } else if (cmd.equals(REQUEST_CMD_STORE)) {
-                        Wallet myWallet = getWallet();
-                        Timber.d("STORE wallet: %s", myWallet.getName());
-                        boolean rc = myWallet.store();
-                        Timber.d("wallet stored: %s with rc=%b", myWallet.getName(), rc);
-                        if (!rc) {
-                            Timber.w("Wallet store failed: %s", myWallet.getStatus().getErrorString());
-                        }
-                        if (observer != null) observer.onWalletStored(rc);
-                    } else if (cmd.equals(REQUEST_CMD_TX)) {
-                        Wallet myWallet = getWallet();
-                        Timber.d("CREATE TX for wallet: %s", myWallet.getName());
-                        myWallet.disposePendingTransaction(); // remove any old pending tx
-                        TxData txData = extras.getParcelable(REQUEST_CMD_TX_DATA);
-                        String txTag = extras.getString(REQUEST_CMD_TX_TAG);
-                        PendingTransaction pendingTransaction = myWallet.createTransaction(txData);
-                        PendingTransaction.Status status = pendingTransaction.getStatus();
-                        Timber.d("transaction status %s", status);
-                        if (status != PendingTransaction.Status.Status_Ok) {
-                            Timber.w("Create Transaction failed: %s", pendingTransaction.getErrorString());
-                        }
-                        if (observer != null) {
-                            observer.onTransactionCreated(txTag, pendingTransaction);
-                        } else {
-                            myWallet.disposePendingTransaction();
-                        }
-                    } else if (cmd.equals(REQUEST_CMD_SWEEP)) {
-                        Wallet myWallet = getWallet();
-                        Timber.d("SWEEP TX for wallet: %s", myWallet.getName());
-                        myWallet.disposePendingTransaction(); // remove any old pending tx
-                        String txTag = extras.getString(REQUEST_CMD_TX_TAG);
-                        PendingTransaction pendingTransaction = myWallet.createSweepUnmixableTransaction();
-                        PendingTransaction.Status status = pendingTransaction.getStatus();
-                        Timber.d("transaction status %s", status);
-                        if (status != PendingTransaction.Status.Status_Ok) {
-                            Timber.w("Create Transaction failed: %s", pendingTransaction.getErrorString());
-                        }
-                        if (observer != null) {
-                            observer.onTransactionCreated(txTag, pendingTransaction);
-                        } else {
-                            myWallet.disposePendingTransaction();
-                        }
-                    } else if (cmd.equals(REQUEST_CMD_SEND)) {
-                        Wallet myWallet = getWallet();
-                        Timber.d("SEND TX for wallet: %s", myWallet.getName());
-                        PendingTransaction pendingTransaction = myWallet.getPendingTransaction();
-                        if (pendingTransaction == null) {
-                            throw new IllegalArgumentException("PendingTransaction is null"); // die
-                        }
-                        if (pendingTransaction.getStatus() != PendingTransaction.Status.Status_Ok) {
-                            Timber.e("PendingTransaction is %s", pendingTransaction.getStatus());
-                            final String error = pendingTransaction.getErrorString();
-                            myWallet.disposePendingTransaction(); // it's broken anyway
-                            if (observer != null) observer.onSendTransactionFailed(error);
-                            return;
-                        }
-                        final String txid = pendingTransaction.getFirstTxId(); // tx ids vanish after commit()!
-                        boolean success = pendingTransaction.commit("", true);
-                        if (success) {
-                            myWallet.disposePendingTransaction();
-                            if (observer != null) observer.onTransactionSent(txid);
-                            String notes = extras.getString(REQUEST_CMD_SEND_NOTES);
-                            if ((notes != null) && (!notes.isEmpty())) {
-                                myWallet.setUserNote(txid, notes);
+                    switch (cmd) {
+                        case REQUEST_CMD_LOAD:
+                            String walletId = extras.getString(REQUEST_WALLET, null);
+                            String walletPw = extras.getString(REQUEST_CMD_LOAD_PW, null);
+                            Timber.d("LOAD wallet %s", walletId);
+                            if (walletId != null) {
+                                showProgress(getString(R.string.status_wallet_loading));
+                                showProgress(10);
+                                Wallet.Status walletStatus = start(walletId, walletPw);
+                                if (observer != null) observer.onWalletStarted(walletStatus);
+                                if ((walletStatus == null) || !walletStatus.isOk()) {
+                                    errorState = true;
+                                    stop();
+                                }
                             }
+                            break;
+                        case REQUEST_CMD_STORE: {
+                            Wallet myWallet = getWallet();
+                            if (myWallet == null) break;
+                            Timber.d("STORE wallet: %s", myWallet.getName());
                             boolean rc = myWallet.store();
                             Timber.d("wallet stored: %s with rc=%b", myWallet.getName(), rc);
                             if (!rc) {
                                 Timber.w("Wallet store failed: %s", myWallet.getStatus().getErrorString());
                             }
                             if (observer != null) observer.onWalletStored(rc);
-                            listener.updated = true;
-                        } else {
-                            final String error = pendingTransaction.getErrorString();
-                            myWallet.disposePendingTransaction();
-                            if (observer != null) observer.onSendTransactionFailed(error);
-                            return;
+                            break;
+                        }
+                        case REQUEST_CMD_TX: {
+                            Wallet myWallet = getWallet();
+                            if (myWallet == null) break;
+                            Timber.d("CREATE TX for wallet: %s", myWallet.getName());
+                            myWallet.disposePendingTransaction(); // remove any old pending tx
+
+                            TxData txData = extras.getParcelable(REQUEST_CMD_TX_DATA);
+                            String txTag = extras.getString(REQUEST_CMD_TX_TAG);
+                            PendingTransaction pendingTransaction = myWallet.createTransaction(txData);
+                            PendingTransaction.Status status = pendingTransaction.getStatus();
+                            Timber.d("transaction status %s", status);
+                            if (status != PendingTransaction.Status.Status_Ok) {
+                                Timber.w("Create Transaction failed: %s", pendingTransaction.getErrorString());
+                            }
+                            if (observer != null) {
+                                observer.onTransactionCreated(txTag, pendingTransaction);
+                            } else {
+                                myWallet.disposePendingTransaction();
+                            }
+                            break;
+                        }
+                        case REQUEST_CMD_SWEEP: {
+                            Wallet myWallet = getWallet();
+                            if (myWallet == null) break;
+                            Timber.d("SWEEP TX for wallet: %s", myWallet.getName());
+                            myWallet.disposePendingTransaction(); // remove any old pending tx
+
+                            String txTag = extras.getString(REQUEST_CMD_TX_TAG);
+                            PendingTransaction pendingTransaction = myWallet.createSweepUnmixableTransaction();
+                            PendingTransaction.Status status = pendingTransaction.getStatus();
+                            Timber.d("transaction status %s", status);
+                            if (status != PendingTransaction.Status.Status_Ok) {
+                                Timber.w("Create Transaction failed: %s", pendingTransaction.getErrorString());
+                            }
+                            if (observer != null) {
+                                observer.onTransactionCreated(txTag, pendingTransaction);
+                            } else {
+                                myWallet.disposePendingTransaction();
+                            }
+                            break;
+                        }
+                        case REQUEST_CMD_SEND: {
+                            Wallet myWallet = getWallet();
+                            if (myWallet == null) break;
+                            Timber.d("SEND TX for wallet: %s", myWallet.getName());
+                            PendingTransaction pendingTransaction = myWallet.getPendingTransaction();
+                            if (pendingTransaction == null) {
+                                throw new IllegalArgumentException("PendingTransaction is null"); // die
+                            }
+                            if (pendingTransaction.getStatus() != PendingTransaction.Status.Status_Ok) {
+                                Timber.e("PendingTransaction is %s", pendingTransaction.getStatus());
+                                final String error = pendingTransaction.getErrorString();
+                                myWallet.disposePendingTransaction(); // it's broken anyway
+                                if (observer != null) observer.onSendTransactionFailed(error);
+                                return;
+                            }
+                            final String txid = pendingTransaction.getFirstTxId(); // tx ids vanish after commit()!
+
+                            boolean success = pendingTransaction.commit("", true);
+                            if (success) {
+                                myWallet.disposePendingTransaction();
+                                if (observer != null) observer.onTransactionSent(txid);
+                                String notes = extras.getString(REQUEST_CMD_SEND_NOTES);
+                                if ((notes != null) && (!notes.isEmpty())) {
+                                    myWallet.setUserNote(txid, notes);
+                                }
+                                boolean rc = myWallet.store();
+                                Timber.d("wallet stored: %s with rc=%b", myWallet.getName(), rc);
+                                if (!rc) {
+                                    Timber.w("Wallet store failed: %s", myWallet.getStatus().getErrorString());
+                                }
+                                if (observer != null) observer.onWalletStored(rc);
+                                listener.updated = true;
+                            } else {
+                                final String error = pendingTransaction.getErrorString();
+                                myWallet.disposePendingTransaction();
+                                if (observer != null) observer.onSendTransactionFailed(error);
+                                return;
+                            }
+                            break;
                         }
                     }
                 }

app/src/main/java/com/m2049r/xmrwallet/service/exchange/ecb/ExchangeApiImpl.java

@@ -0,0 +1,215 @@
+/*
+ * Copyright (c) 2019 m2049r@monerujo.io
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// https://developer.android.com/training/basics/network-ops/xml
+
+package com.m2049r.xmrwallet.service.exchange.ecb;
+
+import android.support.annotation.NonNull;
+import android.support.annotation.VisibleForTesting;
+
+import com.m2049r.xmrwallet.service.exchange.api.ExchangeApi;
+import com.m2049r.xmrwallet.service.exchange.api.ExchangeCallback;
+import com.m2049r.xmrwallet.service.exchange.api.ExchangeException;
+import com.m2049r.xmrwallet.service.exchange.api.ExchangeRate;
+
+import org.w3c.dom.Document;
+import org.w3c.dom.Element;
+import org.w3c.dom.Node;
+import org.w3c.dom.NodeList;
+import org.xml.sax.SAXException;
+
+import java.io.IOException;
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+import java.util.Calendar;
+import java.util.Date;
+import java.util.HashMap;
+import java.util.Locale;
+import java.util.Map;
+import java.util.TimeZone;
+
+import javax.xml.parsers.DocumentBuilder;
+import javax.xml.parsers.DocumentBuilderFactory;
+import javax.xml.parsers.ParserConfigurationException;
+
+import okhttp3.Call;
+import okhttp3.HttpUrl;
+import okhttp3.OkHttpClient;
+import okhttp3.Request;
+import okhttp3.Response;
+import timber.log.Timber;
+
+public class ExchangeApiImpl implements ExchangeApi {
+    @NonNull
+    private final OkHttpClient okHttpClient;
+    @NonNull
+    private final HttpUrl baseUrl;
+
+    //so we can inject the mockserver url
+    @VisibleForTesting
+    public ExchangeApiImpl(@NonNull final OkHttpClient okHttpClient, @NonNull final HttpUrl baseUrl) {
+        this.okHttpClient = okHttpClient;
+        this.baseUrl = baseUrl;
+    }
+
+    public ExchangeApiImpl(@NonNull final OkHttpClient okHttpClient) {
+        this(okHttpClient, HttpUrl.parse("https://www.ecb.europa.eu/stats/eurofxref/eurofxref-daily.xml"));
+        // data is daily and is refreshed around 16:00 CET every working day
+    }
+
+    public static boolean isSameDay(Calendar calendar, Calendar anotherCalendar) {
+        return (calendar.get(Calendar.YEAR) == anotherCalendar.get(Calendar.YEAR)) &&
+                (calendar.get(Calendar.DAY_OF_YEAR) == anotherCalendar.get(Calendar.DAY_OF_YEAR));
+    }
+
+    @Override
+    public void queryExchangeRate(@NonNull final String baseCurrency, @NonNull final String quoteCurrency,
+                                  @NonNull final ExchangeCallback callback) {
+        if (!baseCurrency.equals("EUR")) {
+            callback.onError(new IllegalArgumentException("Only EUR supported as base"));
+            return;
+        }
+
+        if (baseCurrency.equals(quoteCurrency)) {
+            callback.onSuccess(new ExchangeRateImpl(quoteCurrency, 1.0, new Date()));
+            return;
+        }
+
+        if (fetchDate != null) { // we have data
+            boolean useCache = false;
+            // figure out if we can use the cached values
+            // data is daily and is refreshed around 16:00 CET every working day
+            Calendar now = Calendar.getInstance(TimeZone.getTimeZone("CET"));
+
+            int fetchWeekday = fetchDate.get(Calendar.DAY_OF_WEEK);
+            int fetchDay = fetchDate.get(Calendar.DAY_OF_YEAR);
+            int fetchHour = fetchDate.get(Calendar.HOUR_OF_DAY);
+
+            int today = now.get(Calendar.DAY_OF_YEAR);
+            int nowHour = now.get(Calendar.HOUR_OF_DAY);
+
+            if (
+                // was it fetched today before 16:00? assume no new data iff now < 16:00 as well
+                    ((today == fetchDay) && (fetchHour < 16) && (nowHour < 16))
+                            // was it fetched after, 17:00? we can assume there is no newer data
+                            || ((today == fetchDay) && (fetchHour > 17))
+                            || ((today == fetchDay + 1) && (fetchHour > 17) && (nowHour < 16))
+                            // is the data itself from today? there can be no newer data
+                            || (fxDate.get(Calendar.DAY_OF_YEAR) == today)
+                            // was it fetched Sat/Sun? we can assume there is no newer data
+                            || ((fetchWeekday == Calendar.SATURDAY) || (fetchWeekday == Calendar.SUNDAY))
+            ) { // return cached rate
+                try {
+                    callback.onSuccess(getRate(quoteCurrency));
+                } catch (ExchangeException ex) {
+                    callback.onError(ex);
+                }
+                return;
+            }
+        }
+
+        final Request httpRequest = createHttpRequest(baseUrl);
+
+        okHttpClient.newCall(httpRequest).enqueue(new okhttp3.Callback() {
+            @Override
+            public void onFailure(final Call call, final IOException ex) {
+                callback.onError(ex);
+            }
+
+            @Override
+            public void onResponse(final Call call, final Response response) throws IOException {
+                if (response.isSuccessful()) {
+                    try {
+                        DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
+                        DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();
+                        Document doc = dBuilder.parse(response.body().byteStream());
+                        doc.getDocumentElement().normalize();
+                        parse(doc);
+                        try {
+                            callback.onSuccess(getRate(quoteCurrency));
+                        } catch (ExchangeException ex) {
+                            callback.onError(ex);
+                        }
+                    } catch (ParserConfigurationException | SAXException ex) {
+                        Timber.w(ex);
+                        callback.onError(new ExchangeException(ex.getLocalizedMessage()));
+                    }
+                } else {
+                    callback.onError(new ExchangeException(response.code(), response.message()));
+                }
+            }
+        });
+    }
+
+    private Request createHttpRequest(final HttpUrl url) {
+        return new Request.Builder()
+                .url(url)
+                .get()
+                .build();
+    }
+
+    final private Map<String, Double> fxEntries = new HashMap<>();
+    private Calendar fxDate = null;
+    private Calendar fetchDate = null;
+
+    synchronized private ExchangeRate getRate(String currency) throws ExchangeException {
+        Timber.e("Getting %s", currency);
+        final Double rate = fxEntries.get(currency);
+        if (rate == null) throw new ExchangeException(404, "Currency not supported: " + currency);
+        return new ExchangeRateImpl(currency, rate, fxDate.getTime());
+    }
+
+    private final static SimpleDateFormat DATE_FORMAT = new SimpleDateFormat("yyyy-MM-dd", Locale.US);
+
+    {
+        DATE_FORMAT.setTimeZone(TimeZone.getTimeZone("UTC"));
+    }
+
+    private void parse(final Document xmlRootDoc) {
+        final Map<String, Double> entries = new HashMap<>();
+        Calendar date = Calendar.getInstance(TimeZone.getTimeZone("CET"));
+        try {
+            NodeList cubes = xmlRootDoc.getElementsByTagName("Cube");
+            for (int i = 0; i < cubes.getLength(); i++) {
+                Node node = cubes.item(i);
+                if (node.getNodeType() == Node.ELEMENT_NODE) {
+                    Element cube = (Element) node;
+                    if (cube.hasAttribute("time")) { // a time Cube
+                        final Date time = DATE_FORMAT.parse(cube.getAttribute("time"));
+                        date.setTime(time);
+                    } else if (cube.hasAttribute("currency")
+                            && cube.hasAttribute("rate")) { // a rate Cube
+                        String currency = cube.getAttribute("currency");
+                        double rate = Double.valueOf(cube.getAttribute("rate"));
+                        entries.put(currency, rate);
+                    } // else an empty Cube - ignore
+                }
+            }
+        } catch (ParseException ex) {
+            Timber.d(ex);
+        }
+        synchronized (this) {
+            if (date != null) {
+                fetchDate = Calendar.getInstance(TimeZone.getTimeZone("CET"));
+                fxDate = date;
+                fxEntries.clear();
+                fxEntries.putAll(entries);
+            }
+            // else don't change what we have
+        }
+    }
+}

app/src/main/java/com/m2049r/xmrwallet/service/exchange/ecb/ExchangeRateImpl.java

@@ -0,0 +1,57 @@
+/*
+ * Copyright (c) 2019 m2049r et al.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.m2049r.xmrwallet.service.exchange.ecb;
+
+import android.support.annotation.NonNull;
+
+import com.m2049r.xmrwallet.service.exchange.api.ExchangeRate;
+
+import java.util.Date;
+
+class ExchangeRateImpl implements ExchangeRate {
+    private final Date date;
+    private final String baseCurrency = "EUR";
+    private final String quoteCurrency;
+    private final double rate;
+
+    @Override
+    public String getServiceName() {
+        return "ecb.europa.eu";
+    }
+
+    @Override
+    public String getBaseCurrency() {
+        return baseCurrency;
+    }
+
+    @Override
+    public String getQuoteCurrency() {
+        return quoteCurrency;
+    }
+
+    @Override
+    public double getRate() {
+        return rate;
+    }
+
+    ExchangeRateImpl(@NonNull final String quoteCurrency, double rate, @NonNull final Date date) {
+        super();
+        this.quoteCurrency = quoteCurrency;
+        this.rate = rate;
+        this.date = date;
+    }
+}