disable ledger support (#547)

for use with b087cbf995

.circleci/config.yml

@@ -3,11 +3,13 @@ jobs:
   build:
     working_directory: ~/code
     docker:
-      - image: bitriseio/android-ndk
+      - image: circleci/android:api-28-ndk
     environment:
       JVM_OPTS: -Xmx3200m
     steps:
       - checkout
+      - run: yes | sdkmanager --licenses || exit 0
+      - run: yes | sdkmanager --update || exit 0
       - restore_cache:
           key: jars-{{ checksum "build.gradle" }}-{{ checksum  "app/build.gradle" }}
       - run:

.idea/.gitignore

@@ -1,3 +0,0 @@
-workspace.xml
-markdown-*
-misc.xml

.idea/.name

@@ -1 +0,0 @@
-xmrwallet

.idea/compiler.xml

@@ -1,22 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="CompilerConfiguration">
-    <resourceExtensions />
-    <wildcardResourcePatterns>
-      <entry name="!?*.java" />
-      <entry name="!?*.form" />
-      <entry name="!?*.class" />
-      <entry name="!?*.groovy" />
-      <entry name="!?*.scala" />
-      <entry name="!?*.flex" />
-      <entry name="!?*.kt" />
-      <entry name="!?*.clj" />
-      <entry name="!?*.aj" />
-    </wildcardResourcePatterns>
-    <annotationProcessing>
-      <profile default="true" name="Default" enabled="false">
-        <processorPath useClasspath="true" />
-      </profile>
-    </annotationProcessing>
-  </component>
-</project>

.idea/copyright/profiles_settings.xml

@@ -1,3 +0,0 @@
-<component name="CopyrightManager">
-  <settings default="" />
-</component>

.idea/gradle.xml

@@ -1,19 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="GradleSettings">
-    <option name="linkedExternalProjectsSettings">
-      <GradleProjectSettings>
-        <option name="disableWrapperSourceDistributionNotification" value="true" />
-        <option name="distributionType" value="DEFAULT_WRAPPED" />
-        <option name="externalProjectPath" value="$PROJECT_DIR$" />
-        <option name="modules">
-          <set>
-            <option value="$PROJECT_DIR$" />
-            <option value="$PROJECT_DIR$/app" />
-          </set>
-        </option>
-        <option name="resolveModulePerSourceSet" value="false" />
-      </GradleProjectSettings>
-    </option>
-  </component>
-</project>

.idea/modules.xml

@@ -1,9 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="ProjectModuleManager">
-    <modules>
-      <module fileurl="file://$PROJECT_DIR$/app/app.iml" filepath="$PROJECT_DIR$/app/app.iml" />
-      <module fileurl="file://$PROJECT_DIR$/xmrwallet.iml" filepath="$PROJECT_DIR$/xmrwallet.iml" />
-    </modules>
-  </component>
-</project>

.idea/runConfigurations.xml

@@ -1,12 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="RunConfigurationProducerService">
-    <option name="ignoredProducers">
-      <set>
-        <option value="org.jetbrains.plugins.gradle.execution.test.runner.AllInPackageGradleConfigurationProducer" />
-        <option value="org.jetbrains.plugins.gradle.execution.test.runner.TestClassGradleConfigurationProducer" />
-        <option value="org.jetbrains.plugins.gradle.execution.test.runner.TestMethodGradleConfigurationProducer" />
-      </set>
-    </option>
-  </component>
-</project>

.idea/vcs.xml

@@ -1,6 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="VcsDirectoryMappings">
-    <mapping directory="$PROJECT_DIR$" vcs="Git" />
-  </component>
-</project>

app/build.gradle

@@ -7,8 +7,8 @@ android {
         applicationId "com.m2049r.xmrwallet"
         minSdkVersion 21
         targetSdkVersion 28
-        versionCode 159
-        versionName "1.10.9 'Node-O-matiC'"
+        versionCode 172
+        versionName "1.11.2 'Chernushka'"
 
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
         externalNativeBuild {
@@ -113,10 +113,12 @@ dependencies {
     implementation 'dnsjava:dnsjava:2.1.8'
     implementation 'org.jitsi:dnssecjava:1.1.3'
     implementation 'org.slf4j:slf4j-nop:1.7.25'
+    implementation 'com.github.brnunes:swipeablerecyclerview:1.0.2'
 
     testImplementation "junit:junit:$rootProject.ext.junitVersion"
     testImplementation "org.mockito:mockito-all:$rootProject.ext.mockitoVersion"
     testImplementation "com.squareup.okhttp3:mockwebserver:$rootProject.ext.okHttpVersion"
-    testImplementation 'org.json:json:20140107'
-    testImplementation 'net.jodah:concurrentunit:0.4.2'
+    testImplementation 'org.json:json:20180813'
+    testImplementation 'net.jodah:concurrentunit:0.4.4'
+
 }

app/src/main/AndroidManifest.xml

@@ -26,14 +26,14 @@
             android:configChanges="orientation|keyboardHidden"
             android:label="@string/wallet_activity_name"
             android:launchMode="singleTask"
-            android:screenOrientation="portrait" />
+            android:screenOrientation="behind" />
 
         <activity
             android:name=".LoginActivity"
             android:configChanges="orientation|keyboardHidden"
             android:label="@string/app_name"
             android:launchMode="singleTop"
-            android:screenOrientation="portrait">
+            android:screenOrientation="locked">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
                 <category android:name="android.intent.category.LAUNCHER" />
@@ -42,6 +42,22 @@
                 <action android:name="android.hardware.usb.action.USB_DEVICE_ATTACHED" />
             </intent-filter>
 
+            <intent-filter android:label="@string/app_name">
+                <action android:name="android.intent.action.VIEW" />
+                <data android:scheme="monero" />
+
+                <category android:name="android.intent.category.DEFAULT" />
+                <category android:name="android.intent.category.BROWSABLE" />
+            </intent-filter>
+
+            <intent-filter android:label="@string/app_name">
+                <action android:name="android.intent.action.VIEW" />
+                <data android:scheme="bitcoin" />
+
+                <category android:name="android.intent.category.DEFAULT" />
+                <category android:name="android.intent.category.BROWSABLE" />
+            </intent-filter>
+
             <meta-data
                 android:name="android.hardware.usb.action.USB_DEVICE_ATTACHED"
                 android:resource="@xml/usb_device_filter" />
@@ -52,5 +68,15 @@
             android:description="@string/service_description"
             android:exported="false"
             android:label="Monero Wallet Service" />
+
+        <provider
+            android:name="android.support.v4.content.FileProvider"
+            android:authorities="${applicationId}.fileprovider"
+            android:exported="false"
+            android:grantUriPermissions="true">
+            <meta-data
+                android:name="android.support.FILE_PROVIDER_PATHS"
+                android:resource="@xml/filepaths" />
+        </provider>
     </application>
 </manifest>

app/src/main/assets/licenses.html

@@ -43,6 +43,9 @@ Copyright (c) 2014 Dushyanth Maguluru
 <h3>AndroidLicensesPage (https://github.com/adamsp/AndroidLicensesPage)</h3>
 Copyright (c) 2013 Adam Speakman
 
+<h3>SwipeableRecyclerView (https://github.com/brnunes/SwipeableRecyclerView)</h3>
+Copyright (c) 2015 Bruno R. Nunes
+
 <h3>Apache License, Version 2.0, January 2004</h3>
 http://www.apache.org/licenses/<br/>
 <br/>

app/src/main/cpp/monerujo.cpp

@@ -442,12 +442,6 @@ Java_com_m2049r_xmrwallet_model_WalletManager_findWallets(JNIEnv *env, jobject i
     return cpp2java(env, walletPaths);
 }
 
-JNIEXPORT jstring JNICALL
-Java_com_m2049r_xmrwallet_model_WalletManager_getErrorString(JNIEnv *env, jobject instance) {
-    Bitmonero::Wallet *wallet = getHandle<Bitmonero::Wallet>(env, instance);
-    return env->NewStringUTF(wallet->errorString().c_str());
-}
-
 //TODO virtual bool checkPayment(const std::string &address, const std::string &txid, const std::string &txkey, const std::string &daemon_address, uint64_t &received, uint64_t &height, std::string &error) const = 0;
 
 JNIEXPORT void JNICALL

app/src/main/cpp/monerujo.h

@@ -60,14 +60,14 @@ enum {
     HASH_DATA_AREA = 136
 };
 
-void cn_slow_hash(const void *data, size_t length, char *hash, int variant, int prehashed);
+void cn_slow_hash(const void *data, size_t length, char *hash, int variant, int prehashed, uint64_t height);
 
 inline void slow_hash(const void *data, const size_t length, char *hash) {
-    cn_slow_hash(data, length, hash, 0 /* variant */, 0/*prehashed*/);
+    cn_slow_hash(data, length, hash, 0 /*variant*/, 0 /*prehashed*/, 0 /*height*/);
 }
 
 inline void slow_hash_broken(const void *data, char *hash, int variant) {
-    cn_slow_hash(data, 200 /*sizeof(union hash_state)*/, hash, variant, 1 /*prehashed*/);
+    cn_slow_hash(data, 200 /*sizeof(union hash_state)*/, hash, variant, 1 /*prehashed*/, 0 /*height*/);
 }
 
 #ifdef __cplusplus

app/src/main/java/com/m2049r/levin/scanner/Dispatcher.java

@@ -18,7 +18,6 @@ package com.m2049r.levin.scanner;
 
 import com.m2049r.xmrwallet.data.NodeInfo;
 
-import java.net.InetSocketAddress;
 import java.util.Collection;
 import java.util.HashSet;
 import java.util.Iterator;
@@ -176,9 +175,9 @@ public class Dispatcher implements PeerRetriever.OnGetPeers {
     }
 
     private void retrievePeers(PeerRetriever peer) {
-        for (InetSocketAddress socketAddress : peer.getPeers()) {
+        for (LevinPeer levinPeer : peer.getPeers()) {
             if (getMorePeers())
-                retrievePeer(new NodeInfo(socketAddress));
+                retrievePeer(new NodeInfo(levinPeer));
             else
                 break;
         }

app/src/main/java/com/m2049r/levin/scanner/LevinPeer.java

@@ -0,0 +1,23 @@
+package com.m2049r.levin.scanner;
+
+import java.net.InetAddress;
+import java.net.InetSocketAddress;
+
+public class LevinPeer {
+    final public InetSocketAddress socketAddress;
+    final public int version;
+    final public long height;
+    final public String top;
+
+
+    public InetSocketAddress getSocketAddress() {
+        return socketAddress;
+    }
+
+    LevinPeer(InetAddress address, int port, int version, long height, String top) {
+        this.socketAddress = new InetSocketAddress(address, port);
+        this.version = version;
+        this.height = height;
+        this.top = top;
+    }
+}

app/src/main/java/com/m2049r/levin/scanner/PeerRetriever.java

@@ -28,7 +28,6 @@ import java.io.DataInput;
 import java.io.DataOutput;
 import java.io.IOException;
 import java.net.InetAddress;
-import java.net.InetSocketAddress;
 import java.net.Socket;
 import java.util.ArrayList;
 import java.util.Date;
@@ -45,7 +44,7 @@ public class PeerRetriever implements Callable<PeerRetriever> {
     static final private byte[] HANDSHAKE = handshakeRequest().asByteArray();
     static final private byte[] FLAGS_RESP = flagsResponse().asByteArray();
 
-    final private List<InetSocketAddress> peers = new ArrayList<>();
+    final private List<LevinPeer> peers = new ArrayList<>();
 
     private NodeInfo nodeInfo;
     private OnGetPeers onGetPeersCallback;
@@ -67,7 +66,7 @@ public class PeerRetriever implements Callable<PeerRetriever> {
         return !peers.isEmpty();
     }
 
-    public List<InetSocketAddress> getPeers() {
+    public List<LevinPeer> getPeers() {
         return peers;
     }
 
@@ -107,12 +106,18 @@ public class PeerRetriever implements Callable<PeerRetriever> {
     }
 
     private void readAddressList(Section section) {
+        Section data = (Section) section.get("payload_data");
+        int topVersion = (Integer) data.get("top_version");
+        long currentHeight = (Long) data.get("current_height");
+        String topId = HexHelper.bytesToHex((byte[]) data.get("top_id"));
+        Timber.d("PAYLOAD_DATA %d/%d/%s", topVersion, currentHeight, topId);
+
         @SuppressWarnings("unchecked")
         List<Section> peerList = (List<Section>) section.get("local_peerlist_new");
         if (peerList != null) {
             for (Section peer : peerList) {
                 Section adr = (Section) peer.get("adr");
-                Byte type = (Byte) adr.get("type");
+                Integer type = (Integer) adr.get("type");
                 if ((type == null) || (type != 1))
                     continue;
                 Section addr = (Section) adr.get("addr");
@@ -121,7 +126,7 @@ public class PeerRetriever implements Callable<PeerRetriever> {
                 Integer ip = (Integer) addr.get("m_ip");
                 if (ip == null)
                     continue;
-                Short sport = (Short) addr.get("m_port");
+                Integer sport = (Integer) addr.get("m_port");
                 if (sport == null)
                     continue;
                 int port = sport;
@@ -133,7 +138,7 @@ public class PeerRetriever implements Callable<PeerRetriever> {
                         && !inet.isLoopbackAddress()
                         && !inet.isMulticastAddress()
                         && !inet.isLinkLocalAddress()) {
-                    peers.add(new InetSocketAddress(inet, port));
+                    peers.add(new LevinPeer(inet, port, topVersion, currentHeight, topId));
                 }
             }
         }

app/src/main/java/com/m2049r/levin/util/LevinReader.java

@@ -83,9 +83,11 @@ public class LevinReader {
             case Section.SERIALIZE_TYPE_INT32:
                 return in.readInt();
             case Section.SERIALIZE_TYPE_UINT16:
+                return in.readUnsignedShort();
             case Section.SERIALIZE_TYPE_INT16:
                 return in.readShort();
             case Section.SERIALIZE_TYPE_UINT8:
+                return in.readUnsignedByte();
             case Section.SERIALIZE_TYPE_INT8:
                 return in.readByte();
             case Section.SERIALIZE_TYPE_OBJECT:
@@ -171,10 +173,10 @@ public class LevinReader {
 
     // this should be in LittleEndianDataInputStream because it has little
     // endian logic
-    private long readRest(int firstByte, int bytes) throws IOException {
+    private long readRest(final int firstByte, final int bytes) throws IOException {
         long result = firstByte;
-        for (int i = 0; i < bytes; i++) {
-            result = result + (in.readUnsignedByte() << 8);
+        for (int i = 1; i < bytes + 1; i++) {
+            result = result + (((long) in.readUnsignedByte()) << (8 * i));
         }
         return result;
     }

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

@@ -95,7 +95,6 @@ public class GenerateFragment extends Fragment {
         etWalletRestoreHeight = view.findViewById(R.id.etWalletRestoreHeight);
         bGenerate = view.findViewById(R.id.bGenerate);
 
-        etWalletMnemonic.getEditText().setRawInputType(InputType.TYPE_CLASS_TEXT);
         etWalletAddress.getEditText().setRawInputType(InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS);
         etWalletViewKey.getEditText().setRawInputType(InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS);
         etWalletSpendKey.getEditText().setRawInputType(InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS);

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

@@ -92,6 +92,11 @@ public class LoginActivity extends BaseActivity
 
     Set<NodeInfo> favouriteNodes = new HashSet<>();
 
+    @Override
+    public NodeInfo getNode() {
+        return node;
+    }
+
     @Override
     public void setNode(NodeInfo node) {
         if ((node != null) && (node.getNetworkType() != WalletManager.getInstance().getNetworkType()))
@@ -264,7 +269,11 @@ public class LoginActivity extends BaseActivity
         } else {
             Timber.i("Waiting for permissions");
         }
-        processUsbIntent(getIntent());
+
+        // try intents
+        Intent intent = getIntent();
+        if (!processUsbIntent(intent))
+            processUriIntent(intent);
     }
 
     boolean checkServiceRunning() {
@@ -711,6 +720,10 @@ public class LoginActivity extends BaseActivity
         intent.putExtra(WalletActivity.REQUEST_PW, walletPassword);
         intent.putExtra(WalletActivity.REQUEST_FINGERPRINT_USED, fingerprintUsed);
         intent.putExtra(WalletActivity.REQUEST_STREETMODE, streetmode);
+        if (uri != null) {
+            intent.putExtra(WalletActivity.REQUEST_URI, uri);
+            uri = null; // use only once
+        }
         startActivity(intent);
     }
 
@@ -1348,30 +1361,31 @@ public class LoginActivity extends BaseActivity
     };
 
     private void connectLedger(UsbManager usbManager, final UsbDevice usbDevice) {
-        try {
-            Ledger.connect(usbManager, usbDevice);
-            registerDetachReceiver();
-            onLedgerAction();
-            runOnUiThread(new Runnable() {
-                @Override
-                public void run() {
-                    Toast.makeText(LoginActivity.this,
-                            getString(R.string.toast_ledger_attached, usbDevice.getProductName()),
-                            Toast.LENGTH_SHORT)
-                            .show();
-                }
-            });
-        } catch (IOException ex) {
-            runOnUiThread(new Runnable() {
-                @Override
-                public void run() {
-                    Toast.makeText(LoginActivity.this,
-                            getString(R.string.open_wallet_ledger_missing),
-                            Toast.LENGTH_SHORT)
-                            .show();
-                }
-            });
-        }
+        if (Ledger.ENABLED)
+            try {
+                Ledger.connect(usbManager, usbDevice);
+                registerDetachReceiver();
+                onLedgerAction();
+                runOnUiThread(new Runnable() {
+                    @Override
+                    public void run() {
+                        Toast.makeText(LoginActivity.this,
+                                getString(R.string.toast_ledger_attached, usbDevice.getProductName()),
+                                Toast.LENGTH_SHORT)
+                                .show();
+                    }
+                });
+            } catch (IOException ex) {
+                runOnUiThread(new Runnable() {
+                    @Override
+                    public void run() {
+                        Toast.makeText(LoginActivity.this,
+                                getString(R.string.open_wallet_ledger_missing),
+                                Toast.LENGTH_SHORT)
+                                .show();
+                    }
+                });
+            }
     }
 
     @Override
@@ -1380,7 +1394,7 @@ public class LoginActivity extends BaseActivity
         processUsbIntent(intent);
     }
 
-    private void processUsbIntent(Intent intent) {
+    private boolean processUsbIntent(Intent intent) {
         String action = intent.getAction();
         if (UsbManager.ACTION_USB_DEVICE_ATTACHED.equals(action)) {
             synchronized (this) {
@@ -1393,6 +1407,21 @@ public class LoginActivity extends BaseActivity
                     }
                 }
             }
+            return true;
+        }
+        return false;
+    }
+
+    private String uri = null;
+
+    private void processUriIntent(Intent intent) {
+        String action = intent.getAction();
+        if (Intent.ACTION_VIEW.equals(action)) {
+            synchronized (this) {
+                uri = intent.getDataString();
+                Timber.d("URI Intent %s", uri);
+                HelpFragment.display(getSupportFragmentManager(), R.string.help_uri);
+            }
         }
     }
 

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

@@ -99,6 +99,8 @@ public class LoginFragment extends Fragment implements WalletInfoAdapter.OnInter
 
         void setNode(NodeInfo node);
 
+        NodeInfo getNode();
+
         Set<NodeInfo> getFavouriteNodes();
 
         boolean hasLedger();
@@ -128,7 +130,11 @@ public class LoginFragment extends Fragment implements WalletInfoAdapter.OnInter
         activityCallback.setTitle(null);
         activityCallback.setToolbarButton(Toolbar.BUTTON_CREDITS);
         activityCallback.showNet();
-        findBestNode();
+        NodeInfo node = activityCallback.getNode();
+        if (node == null)
+            findBestNode();
+        else
+            showNode(node);
     }
 
     @Override
@@ -181,7 +187,7 @@ public class LoginFragment extends Fragment implements WalletInfoAdapter.OnInter
             @Override
             public void onClick(View v) {
                 if (activityCallback.getFavouriteNodes().isEmpty())
-                    activityCallback.onNodePrefs();
+                    startNodePrefs();
                 else
                     findBestNode();
             }
@@ -191,8 +197,7 @@ public class LoginFragment extends Fragment implements WalletInfoAdapter.OnInter
         view.findViewById(R.id.ibOption).setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
-                if (activityCallback != null)
-                    activityCallback.onNodePrefs();
+                startNodePrefs();
             }
         });
 
@@ -476,4 +481,9 @@ public class LoginFragment extends Fragment implements WalletInfoAdapter.OnInter
         tvNodeAddress.setText(nodeInfo.getAddress());
         tvNodeAddress.setVisibility(View.VISIBLE);
     }
+
+    private void startNodePrefs() {
+        activityCallback.setNode(null);
+        activityCallback.onNodePrefs();
+    }
 }

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

@@ -17,19 +17,28 @@
 package com.m2049r.xmrwallet;
 
 import android.content.Context;
+import android.content.Intent;
 import android.graphics.Bitmap;
 import android.graphics.Canvas;
 import android.graphics.drawable.BitmapDrawable;
+import android.net.Uri;
 import android.nfc.NfcManager;
 import android.os.AsyncTask;
 import android.os.Bundle;
+import android.support.annotation.Nullable;
 import android.support.design.widget.TextInputLayout;
 import android.support.v4.app.Fragment;
+import android.support.v4.content.FileProvider;
+import android.support.v4.view.MenuItemCompat;
+import android.support.v7.widget.ShareActionProvider;
 import android.text.Editable;
 import android.text.InputType;
 import android.text.TextWatcher;
 import android.view.KeyEvent;
 import android.view.LayoutInflater;
+import android.view.Menu;
+import android.view.MenuInflater;
+import android.view.MenuItem;
 import android.view.View;
 import android.view.ViewGroup;
 import android.view.inputmethod.EditorInfo;
@@ -56,6 +65,9 @@ import com.m2049r.xmrwallet.util.MoneroThreadPoolExecutor;
 import com.m2049r.xmrwallet.widget.ExchangeView;
 import com.m2049r.xmrwallet.widget.Toolbar;
 
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
 import java.util.HashMap;
 import java.util.Map;
 
@@ -69,8 +81,8 @@ public class ReceiveFragment extends Fragment {
     private TextInputLayout etNotes;
     private ExchangeView evAmount;
     private TextView tvQrCode;
-    private ImageView qrCode;
-    private ImageView qrCodeFull;
+    private ImageView ivQrCode;
+    private ImageView ivQrCodeFull;
     private EditText etDummy;
     private ImageButton bCopyAddress;
     private Button bSubaddress;
@@ -97,9 +109,9 @@ public class ReceiveFragment extends Fragment {
         tvAddress = view.findViewById(R.id.tvAddress);
         etNotes = view.findViewById(R.id.etNotes);
         evAmount = view.findViewById(R.id.evAmount);
-        qrCode = view.findViewById(R.id.qrCode);
+        ivQrCode = view.findViewById(R.id.qrCode);
         tvQrCode = view.findViewById(R.id.tvQrCode);
-        qrCodeFull = view.findViewById(R.id.qrCodeFull);
+        ivQrCodeFull = view.findViewById(R.id.qrCodeFull);
         etDummy = view.findViewById(R.id.etDummy);
         bCopyAddress = view.findViewById(R.id.bCopyAddress);
         bSubaddress = view.findViewById(R.id.bSubaddress);
@@ -178,25 +190,25 @@ public class ReceiveFragment extends Fragment {
             }
         });
 
-        qrCode.setOnClickListener(new View.OnClickListener() {
+        ivQrCode.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
                 Helper.hideKeyboard(getActivity());
                 etDummy.requestFocus();
                 if (qrValid) {
-                    qrCodeFull.setImageBitmap(((BitmapDrawable) qrCode.getDrawable()).getBitmap());
-                    qrCodeFull.setVisibility(View.VISIBLE);
+                    ivQrCodeFull.setImageBitmap(((BitmapDrawable) ivQrCode.getDrawable()).getBitmap());
+                    ivQrCodeFull.setVisibility(View.VISIBLE);
                 } else {
                     evAmount.doExchange();
                 }
             }
         });
 
-        qrCodeFull.setOnClickListener(new View.OnClickListener() {
+        ivQrCodeFull.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
-                qrCodeFull.setImageBitmap(null);
-                qrCodeFull.setVisibility(View.GONE);
+                ivQrCodeFull.setImageBitmap(null);
+                ivQrCodeFull.setVisibility(View.GONE);
             }
         });
 
@@ -228,6 +240,81 @@ public class ReceiveFragment extends Fragment {
         return view;
     }
 
+    @Override
+    public void onCreate(@Nullable Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setHasOptionsMenu(true);
+    }
+
+    private ShareActionProvider shareActionProvider;
+
+    @Override
+    public void onCreateOptionsMenu(Menu menu, final MenuInflater inflater) {
+        inflater.inflate(R.menu.receive_menu, menu);
+        super.onCreateOptionsMenu(menu, inflater);
+
+        // Locate MenuItem with ShareActionProvider
+        MenuItem item = menu.findItem(R.id.menu_item_share);
+
+        // Fetch and store ShareActionProvider
+        shareActionProvider = (ShareActionProvider) MenuItemCompat.getActionProvider(item);
+
+        shareActionProvider.setOnShareTargetSelectedListener(new ShareActionProvider.OnShareTargetSelectedListener() {
+            @Override
+            public boolean onShareTargetSelected(ShareActionProvider shareActionProvider, Intent intent) {
+                saveQrCode(); // save it only if we need it
+                return false;
+            }
+        });
+    }
+
+    private void setShareIntent() {
+        if (shareActionProvider != null) {
+            if (qrValid) {
+                shareActionProvider.setShareIntent(getShareIntent());
+            } else {
+                shareActionProvider.setShareIntent(null);
+            }
+        }
+    }
+
+    private void saveQrCode() {
+        if (!qrValid) throw new IllegalStateException("trying to save null qr code!");
+
+        File cachePath = new File(getActivity().getCacheDir(), "images");
+        if (!cachePath.exists())
+            if (!cachePath.mkdirs()) throw new IllegalStateException("cannot create images folder");
+        File png = new File(cachePath, "QR.png");
+        try {
+            FileOutputStream stream = new FileOutputStream(png);
+            Bitmap qrBitmap = ((BitmapDrawable) ivQrCode.getDrawable()).getBitmap();
+            qrBitmap.compress(Bitmap.CompressFormat.PNG, 100, stream);
+            stream.close();
+        } catch (IOException ex) {
+            Timber.e(ex);
+            // make sure we don't share an old qr code
+            if (!png.delete()) throw new IllegalStateException("cannot delete old qr code");
+            // if we manage to delete it, the URI points to nothing and the user gets a toast with the error
+        }
+    }
+
+    private Intent getShareIntent() {
+        File imagePath = new File(getActivity().getCacheDir(), "images");
+        File png = new File(imagePath, "QR.png");
+        Uri contentUri = FileProvider.getUriForFile(getActivity(),
+                "com.m2049r.xmrwallet.fileprovider", png);
+        if (contentUri != null) {
+            Intent shareIntent = new Intent();
+            shareIntent.setAction(Intent.ACTION_SEND);
+            shareIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION); // temp permission for receiving app to read this file
+            shareIntent.setDataAndType(contentUri, getActivity().getContentResolver().getType(contentUri));
+            shareIntent.putExtra(Intent.EXTRA_STREAM, contentUri);
+            shareIntent.putExtra(Intent.EXTRA_TEXT, bcData.getUriString());
+            return shareIntent;
+        }
+        return null;
+    }
+
     void enableSubaddressButton(boolean enable) {
         bSubaddress.setEnabled(enable);
         if (enable) {
@@ -242,23 +329,23 @@ public class ReceiveFragment extends Fragment {
         Toast.makeText(getActivity(), getString(R.string.message_copy_address), Toast.LENGTH_SHORT).show();
     }
 
-    boolean qrValid = true;
+    private boolean qrValid = false;
 
     void clearQR() {
         if (qrValid) {
-            qrCode.setImageBitmap(null);
+            ivQrCode.setImageBitmap(null);
             qrValid = false;
+            setShareIntent();
             if (isLoaded)
                 tvQrCode.setVisibility(View.VISIBLE);
         }
     }
 
     void setQR(Bitmap qr) {
-        qrCode.setImageBitmap(qr);
+        ivQrCode.setImageBitmap(qr);
         qrValid = true;
+        setShareIntent();
         tvQrCode.setVisibility(View.GONE);
-        Helper.hideKeyboard(getActivity());
-        etDummy.requestFocus();
     }
 
     @Override
@@ -392,7 +479,7 @@ public class ReceiveFragment extends Fragment {
             return;
         }
         bcData = new BarcodeData(BarcodeData.Asset.XMR, address, null, notes, xmrAmount);
-        int size = Math.min(qrCode.getHeight(), qrCode.getWidth());
+        int size = Math.max(ivQrCode.getWidth(), ivQrCode.getHeight());
         Bitmap qr = generate(bcData.getUriString(), size, size);
         if (qr != null) {
             setQR(qr);
@@ -422,8 +509,8 @@ public class ReceiveFragment extends Fragment {
             Bitmap bitmap = Bitmap.createBitmap(pixels, 0, width, width, height, Bitmap.Config.RGB_565);
             bitmap = addLogo(bitmap);
             return bitmap;
-        } catch (WriterException e) {
-            e.printStackTrace();
+        } catch (WriterException ex) {
+            Timber.e(ex);
         }
         return null;
     }

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

@@ -31,7 +31,7 @@ public abstract class SecureActivity extends AppCompatActivity {
         super.onCreate(savedInstanceState);
 
         // set FLAG_SECURE to prevent screenshots in Release Mode
-        if (!BuildConfig.DEBUG && !BuildConfig.FLAVOR_type.equals("alpha")) {
+        if (!(BuildConfig.DEBUG && BuildConfig.FLAVOR_type.equals("alpha"))) {
             getWindow().setFlags(LayoutParams.FLAG_SECURE, LayoutParams.FLAG_SECURE);
         }
     }

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

@@ -36,7 +36,7 @@ import com.m2049r.xmrwallet.model.TransactionInfo;
 import com.m2049r.xmrwallet.model.Transfer;
 import com.m2049r.xmrwallet.model.Wallet;
 import com.m2049r.xmrwallet.util.Helper;
-import com.m2049r.xmrwallet.util.UserNotes;
+import com.m2049r.xmrwallet.data.UserNotes;
 import com.m2049r.xmrwallet.widget.Toolbar;
 
 import java.text.SimpleDateFormat;

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

@@ -47,6 +47,7 @@ import android.widget.Toast;
 
 import com.m2049r.xmrwallet.data.BarcodeData;
 import com.m2049r.xmrwallet.data.TxData;
+import com.m2049r.xmrwallet.data.UserNotes;
 import com.m2049r.xmrwallet.dialog.CreditsFragment;
 import com.m2049r.xmrwallet.dialog.HelpFragment;
 import com.m2049r.xmrwallet.fragment.send.SendAddressWizardFragment;
@@ -59,7 +60,6 @@ import com.m2049r.xmrwallet.model.WalletManager;
 import com.m2049r.xmrwallet.service.WalletService;
 import com.m2049r.xmrwallet.util.Helper;
 import com.m2049r.xmrwallet.util.MoneroThreadPoolExecutor;
-import com.m2049r.xmrwallet.util.UserNotes;
 import com.m2049r.xmrwallet.widget.Toolbar;
 
 import java.util.ArrayList;
@@ -81,6 +81,7 @@ public class WalletActivity extends BaseActivity implements WalletFragment.Liste
     public static final String REQUEST_PW = "pw";
     public static final String REQUEST_FINGERPRINT_USED = "fingerprint";
     public static final String REQUEST_STREETMODE = "streetmode";
+    public static final String REQUEST_URI = "uri";
 
     private NavigationView accountsView;
     private DrawerLayout drawer;
@@ -92,6 +93,8 @@ public class WalletActivity extends BaseActivity implements WalletFragment.Liste
 
     private String password;
 
+    private String uri = null;
+
     private long streetMode = 0;
 
     @Override
@@ -144,6 +147,9 @@ public class WalletActivity extends BaseActivity implements WalletFragment.Liste
         } else {
             streetMode = 0;
         }
+        final WalletFragment walletFragment = (WalletFragment)
+                getSupportFragmentManager().findFragmentByTag(WalletFragment.class.getName());
+        if (walletFragment != null) walletFragment.resetDismissedTransactions();
         updateAccountsBalance();
         forceUpdate();
     }
@@ -188,6 +194,7 @@ public class WalletActivity extends BaseActivity implements WalletFragment.Liste
             // we can set the streetmode height AFTER opening the wallet
             requestStreetMode = extras.getBoolean(REQUEST_STREETMODE);
             password = extras.getString(REQUEST_PW);
+            uri = extras.getString(REQUEST_URI);
             connectWalletService(walletId, password);
         } else {
             finish();
@@ -286,7 +293,6 @@ public class WalletActivity extends BaseActivity implements WalletFragment.Liste
             showNet();
         }
         invalidateOptionsMenu();
-
     }
 
     private void onEnableStreetMode() {
@@ -510,7 +516,8 @@ public class WalletActivity extends BaseActivity implements WalletFragment.Liste
 
     @Override
     public void onSendRequest() {
-        replaceFragment(new SendFragment(), null, null);
+        replaceFragment(SendFragment.newInstance(uri), null, null);
+        uri = null; // only use uri once
     }
 
     @Override
@@ -956,8 +963,6 @@ public class WalletActivity extends BaseActivity implements WalletFragment.Liste
         }
         if (!processed || (onUriScannedListener == null)) {
             Toast.makeText(this, getString(R.string.nfc_tag_read_what), Toast.LENGTH_LONG).show();
-        } else {
-            Toast.makeText(this, getString(R.string.nfc_tag_read_success), Toast.LENGTH_SHORT).show();
         }
     }
 

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

@@ -38,6 +38,7 @@ import android.widget.ProgressBar;
 import android.widget.Spinner;
 import android.widget.TextView;
 
+import com.github.brnunes.swipeablerecyclerview.SwipeableRecyclerViewTouchListener;
 import com.m2049r.xmrwallet.layout.TransactionInfoAdapter;
 import com.m2049r.xmrwallet.model.TransactionInfo;
 import com.m2049r.xmrwallet.model.Wallet;
@@ -73,6 +74,12 @@ public class WalletFragment extends Fragment
 
     private Spinner sCurrency;
 
+    private List<String> dismissedTransactions = new ArrayList<>();
+
+    public void resetDismissedTransactions() {
+        dismissedTransactions.clear();
+    }
+
     @Override
     public void onCreate(@Nullable Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
@@ -116,9 +123,44 @@ public class WalletFragment extends Fragment
 
         RecyclerView recyclerView = view.findViewById(R.id.list);
 
-        this.adapter = new TransactionInfoAdapter(getActivity(), this);
+        adapter = new TransactionInfoAdapter(getActivity(), this);
         recyclerView.setAdapter(adapter);
 
+        SwipeableRecyclerViewTouchListener swipeTouchListener =
+                new SwipeableRecyclerViewTouchListener(recyclerView,
+                        new SwipeableRecyclerViewTouchListener.SwipeListener() {
+                            @Override
+                            public boolean canSwipeLeft(int position) {
+                                return activityCallback.isStreetMode();
+                            }
+
+                            @Override
+                            public boolean canSwipeRight(int position) {
+                                return activityCallback.isStreetMode();
+                            }
+
+                            @Override
+                            public void onDismissedBySwipeLeft(RecyclerView recyclerView, int[] reverseSortedPositions) {
+                                for (int position : reverseSortedPositions) {
+                                    dismissedTransactions.add(adapter.getItem(position).hash);
+                                    adapter.removeItem(position);
+                                }
+                                adapter.notifyDataSetChanged();
+                            }
+
+                            @Override
+                            public void onDismissedBySwipeRight(RecyclerView recyclerView, int[] reverseSortedPositions) {
+                                for (int position : reverseSortedPositions) {
+                                    dismissedTransactions.add(adapter.getItem(position).hash);
+                                    adapter.removeItem(position);
+                                }
+                                adapter.notifyDataSetChanged();
+                            }
+                        });
+
+        recyclerView.addOnItemTouchListener(swipeTouchListener);
+
+
         bSend.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
@@ -294,7 +336,9 @@ public class WalletFragment extends Fragment
             Timber.d("StreetHeight=%d", streetHeight);
             for (TransactionInfo info : wallet.getHistory().getAll()) {
                 Timber.d("TxHeight=%d", info.blockheight);
-                if (info.isPending || (info.blockheight >= streetHeight)) list.add(info);
+                if ((info.isPending || (info.blockheight >= streetHeight))
+                        && !dismissedTransactions.contains(info.hash))
+                    list.add(info);
             }
             adapter.setInfos(list);
             adapter.notifyDataSetChanged();

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

@@ -21,7 +21,10 @@ import android.net.Uri;
 import com.m2049r.xmrwallet.model.Wallet;
 import com.m2049r.xmrwallet.util.BitcoinAddressValidator;
 import com.m2049r.xmrwallet.util.OpenAliasHelper;
+import com.m2049r.xmrwallet.util.PaymentProtocolHelper;
 
+import java.net.URI;
+import java.net.URISyntaxException;
 import java.util.HashMap;
 import java.util.Map;
 
@@ -37,8 +40,10 @@ public class BarcodeData {
     public static final String OA_XMR_ASSET = "xmr";
     public static final String OA_BTC_ASSET = "btc";
 
-    static final String BTC_SCHEME = "bitcoin:";
+    static final String BTC_SCHEME = "bitcoin";
+    static final String BTC_DESCRIPTION = "message";
     static final String BTC_AMOUNT = "amount";
+    static final String BTC_BIP70_PARM = "r";
 
     public enum Asset {
         XMR, BTC
@@ -47,56 +52,55 @@ public class BarcodeData {
     public enum Security {
         NORMAL,
         OA_NO_DNSSEC,
-        OA_DNSSEC
+        OA_DNSSEC,
+        BIP70
     }
 
-    public Asset asset = null;
-    public String addressName = null;
-    public String address = null;
-    public String paymentId = null;
-    public String amount = null;
-    public String description = null;
-    public Security security = Security.NORMAL;
-
-    public BarcodeData(String uri) {
-        this.asset = asset;
-        this.address = address;
-    }
+    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 = asset;
-        this.address = address;
+        this(asset, address, null, null, null, null, Security.NORMAL);
     }
 
     public BarcodeData(Asset asset, String address, String amount) {
-        this.asset = asset;
-        this.address = address;
-        this.amount = amount;
+        this(asset, address, null, 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 = asset;
-        this.address = address;
-        this.paymentId = paymentId;
-        this.amount = amount;
+        this(asset, address, null, paymentId, null, amount, Security.NORMAL);
     }
 
     public BarcodeData(Asset asset, String address, String paymentId, String description, String amount) {
+        this(asset, address, null, paymentId, 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 bip70, String paymentId, 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;
-    }
-
-    public void setAddressName(String name) {
-        addressName = name;
-    }
-
-    public void setSecurity(Security security) {
         this.security = security;
     }
 
+
     public Uri getUri() {
         return Uri.parse(getUriString());
     }
@@ -134,13 +138,17 @@ public class BarcodeData {
         if (bcData == null) {
             bcData = parseBitcoinUri(qrCode);
         }
+        // check for btc payment uri (like bitpay)
+        if (bcData == null) {
+            bcData = parseBitcoinPaymentUrl(qrCode);
+        }
         // check for naked btc address
         if (bcData == null) {
             bcData = parseBitcoinNaked(qrCode);
         }
         // check for OpenAlias
         if (bcData == null) {
-            bcData = parseOpenAlias(qrCode);
+            bcData = parseOpenAlias(qrCode, false);
         }
         return bcData;
     }
@@ -175,7 +183,11 @@ 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;
+
         String description = parms.get(XMR_DESCRIPTION);
         String amount = parms.get(XMR_AMOUNT);
         if (amount != null) {
@@ -212,19 +224,28 @@ public class BarcodeData {
     }
 
     // bitcoin:mpQ84J43EURZHkCnXbyQ4PpNDLLBqdsMW2?amount=0.01
-    static public BarcodeData parseBitcoinUri(String uri) {
-        Timber.d("parseBitcoinUri=%s", uri);
+    // bitcoin:?r=https://bitpay.com/i/xxx
+    static public BarcodeData parseBitcoinUri(String uriString) {
+        Timber.d("parseBitcoinUri=%s", uriString);
 
-        if (uri == null) return null;
+        if (uriString == null) return null;
+        URI uri;
+        try {
+            uri = new URI(uriString);
+        } catch (URISyntaxException ex) {
+            return null;
+        }
+        if (!uri.isOpaque() ||
+                !uri.getScheme().equals(BTC_SCHEME)) return null;
 
-        if (!uri.startsWith(BTC_SCHEME)) return null;
-
-        String noScheme = uri.substring(BTC_SCHEME.length());
-        Uri bitcoin = Uri.parse(noScheme);
+        String[] parts = uri.getRawSchemeSpecificPart().split("[?]");
+        if ((parts.length <= 0) || (parts.length > 2)) {
+            Timber.d("invalid number of parts %d", parts.length);
+            return null;
+        }
         Map<String, String> parms = new HashMap<>();
-        String query = bitcoin.getQuery();
-        if (query != null) {
-            String[] args = query.split("&");
+        if (parts.length == 2) {
+            String[] args = parts[1].split("&");
             for (String arg : args) {
                 String[] namevalue = arg.split("=");
                 if (namevalue.length == 0) {
@@ -234,9 +255,26 @@ public class BarcodeData {
                         namevalue.length > 1 ? Uri.decode(namevalue[1]) : "");
             }
         }
-        String address = bitcoin.getPath();
+        String description = parms.get(BTC_DESCRIPTION);
+        String address = parts[0]; // no need to decode as there can bo no special characters
+        if (address.isEmpty()) { // possibly a BIP72 uri
+            String bip70 = parms.get(BTC_BIP70_PARM);
+            if (bip70 == null) {
+                Timber.d("no address and can't find pp url");
+                return null;
+            }
+            if (!PaymentProtocolHelper.isHttp(bip70)) {
+                Timber.d("[%s] is not http url", bip70);
+                return null;
+            }
+            return new BarcodeData(BarcodeData.Asset.BTC, null, null, bip70, null, description, null, Security.NORMAL);
+        }
+        if (!BitcoinAddressValidator.validate(address)) {
+            Timber.d("BTC address (%s) invalid", address);
+            return null;
+        }
         String amount = parms.get(BTC_AMOUNT);
-        if (amount != null) {
+        if ((amount != null) && (!amount.isEmpty())) {
             try {
                 Double.parseDouble(amount);
             } catch (NumberFormatException ex) {
@@ -244,11 +282,22 @@ public class BarcodeData {
                 return null; // we have an amount but its not a number!
             }
         }
-        if (!BitcoinAddressValidator.validate(address)) {
-            Timber.d("address invalid");
+        return new BarcodeData(BarcodeData.Asset.BTC, address, null, description, amount);
+    }
+
+    // https://bitpay.com/invoice?id=xxx
+    // https://bitpay.com/i/KbMdd4EhnLXSbpWGKsaeo6
+    static public BarcodeData parseBitcoinPaymentUrl(String url) {
+        Timber.d("parseBitcoinUri=%s", url);
+
+        if (url == null) return null;
+
+        if (!PaymentProtocolHelper.isHttp(url)) {
+            Timber.d("[%s] is not http url", url);
             return null;
         }
-        return new BarcodeData(BarcodeData.Asset.BTC, address, amount);
+
+        return new BarcodeData(Asset.BTC, url);
     }
 
     static public BarcodeData parseBitcoinNaked(String address) {
@@ -264,7 +313,7 @@ public class BarcodeData {
         return new BarcodeData(BarcodeData.Asset.BTC, address);
     }
 
-    static public BarcodeData parseOpenAlias(String oaString) {
+    static public BarcodeData parseOpenAlias(String oaString, boolean dnssec) {
         Timber.d("parseOpenAlias=%s", oaString);
         if (oaString == null) return null;
 
@@ -316,8 +365,8 @@ public class BarcodeData {
             return null;
         }
 
-        BarcodeData bc = new BarcodeData(asset, address, paymentId, description, amount);
-        bc.setAddressName(addressName);
-        return bc;
+        Security sec = dnssec ? BarcodeData.Security.OA_DNSSEC : BarcodeData.Security.OA_NO_DNSSEC;
+
+        return new BarcodeData(asset, address, addressName, paymentId, description, amount, sec);
     }
 }

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

@@ -22,6 +22,7 @@ import com.burgstaller.okhttp.digest.CachingAuthenticator;
 import com.burgstaller.okhttp.digest.Credentials;
 import com.burgstaller.okhttp.digest.DigestAuthenticator;
 import com.m2049r.levin.scanner.Dispatcher;
+import com.m2049r.levin.scanner.LevinPeer;
 import com.m2049r.xmrwallet.util.OkHttpHelper;
 
 import org.json.JSONException;
@@ -99,21 +100,18 @@ public class NodeInfo extends Node {
         super(nodeString);
     }
 
-    public NodeInfo(InetSocketAddress socketAddress) {
-        super(socketAddress);
+    public NodeInfo(LevinPeer levinPeer) {
+        super(levinPeer.getSocketAddress());
+    }
+
+    public NodeInfo(InetSocketAddress address) {
+        super(address);
     }
 
     public NodeInfo() {
         super();
     }
 
-    public NodeInfo(InetSocketAddress peerAddress, long height, int majorVersion, double respTime) {
-        super(peerAddress);
-        this.height = height;
-        this.majorVersion = majorVersion;
-        this.responseTime = respTime;
-    }
-
     public long getHeight() {
         return height;
     }

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

@@ -20,9 +20,6 @@ import android.os.Parcel;
 import android.os.Parcelable;
 
 import com.m2049r.xmrwallet.model.PendingTransaction;
-import com.m2049r.xmrwallet.util.UserNotes;
-
-import timber.log.Timber;
 
 // https://stackoverflow.com/questions/2139134/how-to-send-an-object-from-one-android-activity-to-another-using-intents
 public class TxData implements Parcelable {

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

@@ -18,12 +18,11 @@ package com.m2049r.xmrwallet.data;
 
 import android.os.Parcel;
 
-import com.m2049r.xmrwallet.model.PendingTransaction;
-
 public class TxDataBtc extends TxData {
 
     private String xmrtoUuid;
     private String btcAddress;
+    private String bip70;
     private double btcAmount;
 
     public TxDataBtc() {
@@ -50,6 +49,14 @@ public class TxDataBtc extends TxData {
         this.btcAddress = btcAddress;
     }
 
+    public String getBip70() {
+        return bip70;
+    }
+
+    public void setBip70(String bip70) {
+        this.bip70 = bip70;
+    }
+
     public double getBtcAmount() {
         return btcAmount;
     }
@@ -63,6 +70,7 @@ public class TxDataBtc extends TxData {
         super.writeToParcel(out, flags);
         out.writeString(xmrtoUuid);
         out.writeString(btcAddress);
+        out.writeString(bip70);
         out.writeDouble(btcAmount);
     }
 
@@ -81,16 +89,19 @@ public class TxDataBtc extends TxData {
         super(in);
         xmrtoUuid = in.readString();
         btcAddress = in.readString();
+        bip70 = in.readString();
         btcAmount = in.readDouble();
     }
 
     @Override
     public String toString() {
-        StringBuffer sb = new StringBuffer();
+        StringBuilder sb = new StringBuilder();
         sb.append(",xmrtoUuid:");
         sb.append(xmrtoUuid);
         sb.append(",btcAddress:");
         sb.append(btcAddress);
+        sb.append(",bip70:");
+        sb.append(bip70);
         sb.append(",btcAmount:");
         sb.append(btcAmount);
         return sb.toString();

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

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package com.m2049r.xmrwallet.util;
+package com.m2049r.xmrwallet.data;
 
 import com.m2049r.xmrwallet.xmrto.api.QueryOrderStatus;
 

app/src/main/java/com/m2049r/xmrwallet/dialog/HelpFragment.java

@@ -67,7 +67,7 @@ public class HelpFragment extends DialogFragment {
 
         AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
         builder.setView(view);
-        builder.setNegativeButton(R.string.about_close,
+        builder.setNegativeButton(R.string.help_ok,
                 new DialogInterface.OnClickListener() {
                     @Override
                     public void onClick(DialogInterface dialog, int id) {