add our stagenet server to defaults (#321)

* sweep layout tweak

* reduce label to fit

* change sweep message

.gitignore

@@ -1,8 +1,7 @@
 .gradle
 /build
 *.iml
-/.idea/libraries
+/.idea
-/.idea/workspace.xml
 /local.properties
 /captures
 .externalNativeBuild

README.md

@@ -1,12 +1,23 @@
 # Monerujo
-Another Android Monero Wallet
+Another Android Monero Wallet for Monero
+	**(not
+    Monero Classic,
+    Monero-Classic,
+    Monero Zero,
+    Monero Original,
+    Monero C,
+    Monero V)**
 
 ### QUICKSTART
 - Download the APK for the most current release [here](https://github.com/m2049r/xmrwallet/releases) and install it
+- Alternatively add our F-Droid repo https://f-droid.monerujo.io/fdroid/repo with fingerpint ```A8 2C 68 E1 4A F0 AA 6A 2E C2 0E 6B 27 2E FF 25 E5 A0 38 F3 F6 58 84 31 6E 0F 5E 0D 91 E7 B7 13``` to your F-Droid client
 - Run the App and select "Generate Wallet" to create a new wallet or recover a wallet
 - Advanced users can copy over synced wallet files (all files) onto sdcard in directory Monerujo (created first time App is started)
 - See the [FAQ](doc/FAQ.md)
 
+## Translations
+Help us translate Monerujo! You can find instructions [On Taiga](https://taiga.getmonero.org/project/erciccione-monero-localization/wiki/monerujo), and if you need help/support, open an issue or contact the Localization Workgroup. You can find us on the freenode channel `#monero-translations`, also relayed on [MatterMost](https://mattermost.getmonero.org/monero/channels/monero-translations), and matrix/riot.
+
 ### Disclaimer
 You may lose all your Moneroj if you use this App. Be cautious when spending on the mainnet.
 
@@ -23,6 +34,8 @@ You may lose all your Moneroj if you use this App. Be cautious when spending on
 - see taiga.getmonero.org & issues on github
 
 ### Issues / Pitfalls
+- Users of Zenfone MAX & Zenfone 2 Laser (possibly others) **MUST** use the armeabi-v7a APK as the arm64-v8a build uses hardware AES
+functionality these models don't have.
 - You should backup your wallet files in the "monerujo" folder periodically.
 - Also note, that on some devices the backups will only be visible on a PC over USB after a reboot of the device (it's an Android bug/feature)
 - Created wallets on a private testnet are unusable because the restore height is set to that
@@ -33,8 +46,8 @@ The official monero client shows the same behaviour.
 No need to build. Binaries are included:
 
 - openssl-1.0.2l
-- monero-v0.11.1.0
+- monero-v0.12
-- boost_1_64_0
+- boost_1_58_0
 
 If you want to build them yourself (recommended) check out [the instructions](doc/BUILDING-external-libs.md)
 

app/build.gradle

@@ -1,15 +1,14 @@
 apply plugin: 'com.android.application'
-apply plugin: 'witness'
 
 android {
     compileSdkVersion 25
-    buildToolsVersion '26.0.2'
+    buildToolsVersion '27.0.3'
     defaultConfig {
         applicationId "com.m2049r.xmrwallet"
         minSdkVersion 21
         targetSdkVersion 25
-        versionCode 83
+        versionCode 97
-        versionName "1.4.3 'Monero Spedner'"
+        versionName "1.5.7 'Maximum Nacho'"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
         externalNativeBuild {
             cmake {
@@ -17,9 +16,6 @@ android {
                 arguments '-DANDROID_STL=c++_shared'
             }
         }
-        ndk {
-            abiFilters 'armeabi-v7a', 'arm64-v8a', 'x86', 'x86_64'
-        }
     }
 
     buildTypes {
@@ -52,59 +48,34 @@ android {
     // APKs for the same app that all have the same version information.
     android.applicationVariants.all { variant ->
         // Assigns a different version code for each output APK.
-        variant.outputs.each {
+        variant.outputs.all {
             output ->
                 def abiName = output.getFilter(com.android.build.OutputFile.ABI)
                 output.versionCodeOverride = abiCodes.get(abiName, 0) + 10 * variant.versionCode
+
+                if (abiName == null) abiName = "universal"
+                def v = "${variant.versionName}".replaceFirst(" .*\$", "").replace(".", "x")
+                outputFileName = "$rootProject.ext.apkName-" + v + "_" + abiName + ".apk"
         }
     }
 }
 
 dependencies {
-    compile 'com.android.support:appcompat-v7:25.4.0'
+    implementation 'com.android.support:appcompat-v7:25.4.0'
-    compile 'com.android.support:design:25.4.0'
+    implementation 'com.android.support:design:25.4.0'
-    compile 'com.android.support:support-v4:25.4.0'
+    implementation 'com.android.support:support-v4:25.4.0'
-    compile 'com.android.support:recyclerview-v7:25.4.0'
+    implementation 'com.android.support:recyclerview-v7:25.4.0'
-    compile 'com.android.support:cardview-v7:25.4.0'
+    implementation 'com.android.support:cardview-v7:25.4.0'
-    compile 'com.android.support.constraint:constraint-layout:1.0.2'
+    implementation 'me.dm7.barcodescanner:zxing:1.9.8'
-    compile 'me.dm7.barcodescanner:zxing:1.9.8'
 
-    compile "com.squareup.okhttp3:okhttp:$rootProject.ext.okHttpVersion"
+    implementation "com.squareup.okhttp3:okhttp:$rootProject.ext.okHttpVersion"
-    compile "com.jakewharton.timber:timber:$rootProject.ext.timberVersion"
+    implementation "com.jakewharton.timber:timber:$rootProject.ext.timberVersion"
 
-    compile 'com.nulab-inc:zxcvbn:1.2.3'
+    implementation 'com.nulab-inc:zxcvbn:1.2.3'
 
-    testCompile "junit:junit:$rootProject.ext.junitVersion"
+    testImplementation "junit:junit:$rootProject.ext.junitVersion"
-    testCompile "org.mockito:mockito-all:$rootProject.ext.mockitoVersion"
+    testImplementation "org.mockito:mockito-all:$rootProject.ext.mockitoVersion"
-    testCompile "com.squareup.okhttp3:mockwebserver:$rootProject.ext.okHttpVersion"
+    testImplementation "com.squareup.okhttp3:mockwebserver:$rootProject.ext.okHttpVersion"
-    testCompile 'org.json:json:20140107'
+    testImplementation 'org.json:json:20140107'
-    testCompile 'net.jodah:concurrentunit:0.4.2'
+    testImplementation 'net.jodah:concurrentunit:0.4.2'
-}
-
-dependencyVerification {
-    verify = [
-            'com.android.support:design:3f409bf2019967ffc344cfaf11e52131fac982468a1707aaeb25bf3c52838966',
-            'com.android.support:appcompat-v7:70551e62660db15b790c5275f56b9de4dd9407d1494d07c8f3dd5698f3638677',
-            'com.android.support:transition:848270144fb180efd2bf928a00ed176dbbc5290badfd638390ffba90088df8b3',
-            'me.dm7.barcodescanner:zxing:d43973c9527c23fa8e6d338c6a2c458e373ce1ac6bcaa3bc41d11ae49116000d',
-            'me.dm7.barcodescanner:core:a5c8a704089b58029db166172ed8e55d756877d010a85a0b1c94fdc96ffb8f9a',
-            'com.android.support:support-v4:ee44c481a1f4d6978568e223e8125379b52b2ececdd53450e09ebae144bd377d',
-            'com.android.support:recyclerview-v7:a2fe121f9d01ed8980e97095b4a3fe9700a0aa0a7d4b0f8c594f765ad8455a0d',
-            'com.android.support:cardview-v7:f3fbbe1fcfdbec7333c6a2c516c5fd511a909d1975271818e268d6fe297d8c70',
-            'com.android.support.constraint:constraint-layout:b0c688cc2b7172608f8153a689d746da40f71e52d7e2fe2bfd9df2f92db77085',
-            'com.android.support:animated-vector-drawable:628ab1d56a6ee4cbedf32617af8b2a1fe02964ed0628e8f898cc09ddba6e1835',
-            'com.android.support:support-vector-drawable:077009d13882ee96f061e4bc2dbe7cce7ae1762d8297592a787ff741afbfb1f2',
-            'com.android.support:support-fragment:316d35d4d2d2902057efad104a73e4bdb50bee260a7075678185b8cd71170945',
-            'com.android.support:support-core-ui:e72ae29b823889686cff6fcb948d6745c2baf6d4c2af4fdffa1ec1e42e3833a3',
-            'com.android.support:support-media-compat:566a161d9cb0083ef62a53e46b71ce5b3d455b8635b1a0a4ae28d96d4b583de8',
-            'com.android.support:support-core-utils:34b8437dfa95ff28d29cf57ffa3b1354a9fa9bfe4059f0fd5ce2f5e4326a1748',
-            'com.android.support:support-compat:54019c63614ce08b02d7b9605490cd2b29ba5b2505f394a9517450b5f72b30ca',
-            'com.android.support:support-annotations:a774272036941b4e912eb426d70c848bde7f06a3bf5fb491f75a427dc6595270',
-            'com.android.support.constraint:constraint-layout-solver:8c62525a9bc5cff5633a96cb9b32fffeccaf41b8841aa87fc22607070dea9b8d',
-            'com.google.zxing:core:bba7724e02a997cec38213af77133ee8e24b0d5cf5fa7ecbc16a4fa93f11ee0d',
-            'com.squareup.okio:okio:734269c3ebc5090e3b23566db558f421f0b4027277c79ad5d176b8ec168bb850',
-            'com.squareup.okhttp3:okhttp:7265adbd6f028aade307f58569d814835cd02bc9beffb70c25f72c9de50d61c4',
-            'com.jakewharton.timber:timber:35c22867f2673132e97e17857d36bb2fc25f5790f0425406833ed0254d62fc66',
-            'com.nulab-inc:zxcvbn:18d7862a6abd2705defec478d77dedadf8f3bb7cf811df22995494f05485785f',
-    ]
 }

app/src/main/AndroidManifest.xml

@@ -7,6 +7,7 @@
     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
     <uses-permission android:name="android.permission.WAKE_LOCK" />
     <uses-permission android:name="android.permission.CAMERA" />
+    <uses-permission android:name="android.permission.USE_FINGERPRINT" />
 
     <application
         android:allowBackup="true"

app/src/main/cpp/monerujo.h

@@ -18,6 +18,7 @@
 #define XMRWALLET_WALLET_LIB_H
 
 #include <jni.h>
+
 /*
 #include <android/log.h>
 
@@ -27,13 +28,13 @@
 #define  LOGE(...)  __android_log_print(ANDROID_LOG_ERROR,LOG_TAG,__VA_ARGS__)
 */
 
-jfieldID getHandleField(JNIEnv *env, jobject obj, const char* fieldName = "handle") {
+jfieldID getHandleField(JNIEnv *env, jobject obj, const char *fieldName = "handle") {
     jclass c = env->GetObjectClass(obj);
     return env->GetFieldID(c, fieldName, "J"); // of type long
 }
 
-template <typename T>
+template<typename T>
-T *getHandle(JNIEnv *env, jobject obj, const char* fieldName = "handle") {
+T *getHandle(JNIEnv *env, jobject obj, const char *fieldName = "handle") {
     jlong handle = env->GetLongField(obj, getHandleField(env, obj, fieldName));
     return reinterpret_cast<T *>(handle);
 }
@@ -42,10 +43,35 @@ void setHandleFromLong(JNIEnv *env, jobject obj, jlong handle) {
     env->SetLongField(obj, getHandleField(env, obj), handle);
 }
 
-template <typename T>
+template<typename T>
 void setHandle(JNIEnv *env, jobject obj, T *t) {
     jlong handle = reinterpret_cast<jlong>(t);
     setHandleFromLong(env, obj, handle);
 }
 
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+// from monero-core crypto/hash-ops.h - avoid #including monero code here
+enum {
+    HASH_SIZE = 32,
+    HASH_DATA_AREA = 136
+};
+
+void cn_slow_hash(const void *data, size_t length, char *hash, int variant, int prehashed);
+
+inline void slow_hash(const void *data, const size_t length, char *hash) {
+    cn_slow_hash(data, length, hash, 0 /* variant */, 0/*prehashed*/);
+}
+
+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*/);
+}
+
+#ifdef __cplusplus
+}
+#endif
+
 #endif //XMRWALLET_WALLET_LIB_H

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

@@ -16,12 +16,15 @@
 
 package com.m2049r.xmrwallet;
 
+import android.app.AlertDialog;
 import android.content.Context;
+import android.content.DialogInterface;
 import android.os.Bundle;
 import android.support.annotation.Nullable;
 import android.support.design.widget.TextInputLayout;
 import android.support.v4.app.Fragment;
 import android.text.Editable;
+import android.text.Html;
 import android.text.InputType;
 import android.text.TextWatcher;
 import android.view.KeyEvent;
@@ -32,20 +35,23 @@ import android.view.View;
 import android.view.ViewGroup;
 import android.view.inputmethod.EditorInfo;
 import android.widget.Button;
+import android.widget.LinearLayout;
+import android.widget.Switch;
 import android.widget.TextView;
 
-import com.m2049r.xmrwallet.util.RestoreHeight;
-import com.m2049r.xmrwallet.widget.Toolbar;
 import com.m2049r.xmrwallet.model.Wallet;
 import com.m2049r.xmrwallet.model.WalletManager;
+import com.m2049r.xmrwallet.util.FingerprintHelper;
 import com.m2049r.xmrwallet.util.Helper;
+import com.m2049r.xmrwallet.util.KeyStoreHelper;
+import com.m2049r.xmrwallet.util.RestoreHeight;
+import com.m2049r.xmrwallet.widget.Toolbar;
 import com.nulabinc.zxcvbn.Strength;
 import com.nulabinc.zxcvbn.Zxcvbn;
 
 import java.io.File;
 import java.text.ParseException;
 import java.text.SimpleDateFormat;
-import java.util.Calendar;
 
 import timber.log.Timber;
 
@@ -59,6 +65,7 @@ public class GenerateFragment extends Fragment {
 
     private TextInputLayout etWalletName;
     private TextInputLayout etWalletPassword;
+    private LinearLayout llFingerprintAuth;
     private TextInputLayout etWalletAddress;
     private TextInputLayout etWalletMnemonic;
     private TextInputLayout etWalletViewKey;
@@ -79,6 +86,7 @@ public class GenerateFragment extends Fragment {
 
         etWalletName = (TextInputLayout) view.findViewById(R.id.etWalletName);
         etWalletPassword = (TextInputLayout) view.findViewById(R.id.etWalletPassword);
+        llFingerprintAuth = (LinearLayout) view.findViewById(R.id.llFingerprintAuth);
         etWalletMnemonic = (TextInputLayout) view.findViewById(R.id.etWalletMnemonic);
         etWalletAddress = (TextInputLayout) view.findViewById(R.id.etWalletAddress);
         etWalletViewKey = (TextInputLayout) view.findViewById(R.id.etWalletViewKey);
@@ -146,6 +154,30 @@ public class GenerateFragment extends Fragment {
             }
         });
 
+        if (FingerprintHelper.isDeviceSupported(getContext())) {
+            llFingerprintAuth.setVisibility(View.VISIBLE);
+
+            final Switch swFingerprintAllowed = (Switch) llFingerprintAuth.getChildAt(0);
+            swFingerprintAllowed.setOnClickListener(new View.OnClickListener() {
+                @Override
+                public void onClick(View view) {
+                    if (!swFingerprintAllowed.isChecked()) return;
+
+                    AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
+                    builder.setMessage(Html.fromHtml(getString(R.string.generate_fingerprint_warn)))
+                            .setCancelable(false)
+                            .setPositiveButton(getString(R.string.label_ok), null)
+                            .setNegativeButton(getString(R.string.label_cancel), new DialogInterface.OnClickListener() {
+                                @Override
+                                public void onClick(DialogInterface dialogInterface, int i) {
+                                    swFingerprintAllowed.setChecked(false);
+                                }
+                            })
+                            .show();
+                }
+            });
+        }
+
         if (type.equals(TYPE_NEW)) {
             etWalletPassword.getEditText().setImeOptions(EditorInfo.IME_ACTION_DONE);
             etWalletPassword.getEditText().setOnEditorActionListener(new TextView.OnEditorActionListener() {
@@ -423,18 +455,28 @@ public class GenerateFragment extends Fragment {
 
         String name = etWalletName.getEditText().getText().toString();
         String password = etWalletPassword.getEditText().getText().toString();
+        boolean fingerprintAuthAllowed = ((Switch) llFingerprintAuth.getChildAt(0)).isChecked();
+
+        // create the real wallet password
+        String crazyPass = KeyStoreHelper.getCrazyPass(getActivity(), password);
 
         long height = getHeight();
         if (height < 0) height = 0;
 
         if (type.equals(TYPE_NEW)) {
             bGenerate.setEnabled(false);
-            activityCallback.onGenerate(name, password);
+            if (fingerprintAuthAllowed) {
+                KeyStoreHelper.saveWalletUserPass(getActivity(), name, password);
+            }
+            activityCallback.onGenerate(name, crazyPass);
         } else if (type.equals(TYPE_SEED)) {
             if (!checkMnemonic()) return;
             String seed = etWalletMnemonic.getEditText().getText().toString();
             bGenerate.setEnabled(false);
-            activityCallback.onGenerate(name, password, seed, height);
+            if (fingerprintAuthAllowed) {
+                KeyStoreHelper.saveWalletUserPass(getActivity(), name, password);
+            }
+            activityCallback.onGenerate(name, crazyPass, seed, height);
         } else if (type.equals(TYPE_KEY) || type.equals(TYPE_VIEWONLY)) {
             if (checkAddress() && checkViewKey() && checkSpendKey()) {
                 bGenerate.setEnabled(false);
@@ -444,7 +486,10 @@ public class GenerateFragment extends Fragment {
                 if (type.equals(TYPE_KEY)) {
                     spendKey = etWalletSpendKey.getEditText().getText().toString();
                 }
-                activityCallback.onGenerate(name, password, address, viewKey, spendKey, height);
+                if (fingerprintAuthAllowed) {
+                    KeyStoreHelper.saveWalletUserPass(getActivity(), name, password);
+                }
+                activityCallback.onGenerate(name, crazyPass, address, viewKey, spendKey, height);
             }
         }
     }

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

@@ -43,18 +43,20 @@ import android.widget.RelativeLayout;
 import android.widget.TextView;
 import android.widget.Toast;
 
-import com.m2049r.xmrwallet.dialog.HelpFragment;
 import com.m2049r.xmrwallet.layout.WalletInfoAdapter;
 import com.m2049r.xmrwallet.model.NetworkType;
 import com.m2049r.xmrwallet.model.WalletManager;
 import com.m2049r.xmrwallet.util.Helper;
+import com.m2049r.xmrwallet.util.KeyStoreHelper;
 import com.m2049r.xmrwallet.util.NodeList;
+import com.m2049r.xmrwallet.util.Notice;
 import com.m2049r.xmrwallet.widget.DropDownEditText;
 import com.m2049r.xmrwallet.widget.Toolbar;
 
 import java.io.File;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.Set;
 
 import timber.log.Timber;
 
@@ -71,9 +73,6 @@ public class LoginFragment extends Fragment implements WalletInfoAdapter.OnInter
     private DropDownEditText etDaemonAddress;
     private ArrayAdapter<String> nodeAdapter;
 
-    private View llXmrToEnabled;
-    private View ibXmrToInfoClose;
-
     private Listener activityCallback;
 
     // Container Activity must implement this interface
@@ -173,23 +172,8 @@ public class LoginFragment extends Fragment implements WalletInfoAdapter.OnInter
 
         etDummy = (EditText) view.findViewById(R.id.etDummy);
 
-        llXmrToEnabled = view.findViewById(R.id.llXmrToEnabled);
+        ViewGroup llNotice = (ViewGroup) view.findViewById(R.id.llNotice);
-        llXmrToEnabled.setOnClickListener(new View.OnClickListener() {
+        Notice.showAll(llNotice,".*_login");
-            @Override
-            public void onClick(View v) {
-                HelpFragment.display(getChildFragmentManager(), R.string.help_xmrto);
-
-            }
-        });
-        ibXmrToInfoClose = view.findViewById(R.id.ibXmrToInfoClose);
-        ibXmrToInfoClose.setOnClickListener(new View.OnClickListener() {
-            @Override
-            public void onClick(View v) {
-                llXmrToEnabled.setVisibility(View.GONE);
-                showXmrtoEnabled = false;
-                saveXmrToPrefs();
-            }
-        });
 
         etDaemonAddress = (DropDownEditText) view.findViewById(R.id.etDaemonAddress);
         nodeAdapter = new ArrayAdapter<>(getContext(), android.R.layout.simple_dropdown_item_1line);
@@ -237,9 +221,6 @@ public class LoginFragment extends Fragment implements WalletInfoAdapter.OnInter
         });
 
         loadPrefs();
-        if (!showXmrtoEnabled) {
-            llXmrToEnabled.setVisibility(View.GONE);
-        }
 
         return view;
     }
@@ -326,6 +307,17 @@ public class LoginFragment extends Fragment implements WalletInfoAdapter.OnInter
                 ivGunther.setImageDrawable(null);
             }
         }
+
+        // remove information of non-existent wallet
+        Set<String> removedWallets = getActivity()
+                .getSharedPreferences(KeyStoreHelper.SecurityConstants.WALLET_PASS_PREFS_NAME, Context.MODE_PRIVATE)
+                .getAll().keySet();
+        for (WalletManager.WalletInfo s : walletList) {
+            removedWallets.remove(s.name);
+        }
+        for (String name : removedWallets) {
+            KeyStoreHelper.removeWalletUserPass(getActivity(), name);
+        }
     }
 
     private void showInfo(@NonNull String name) {
@@ -345,81 +337,65 @@ public class LoginFragment extends Fragment implements WalletInfoAdapter.OnInter
     @Override
     public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
         inflater.inflate(R.menu.list_menu, menu);
-        menu.findItem(R.id.action_testnet).setChecked(testnetCheckMenu);
+        menu.findItem(R.id.action_stagenet).setChecked(stagenetCheckMenu);
         super.onCreateOptionsMenu(menu, inflater);
     }
 
-    private boolean testnetCheckMenu = BuildConfig.DEBUG;
+    private boolean stagenetCheckMenu = BuildConfig.DEBUG;
 
-    //boolean isTestnet() {
+    public boolean onStagenetMenuItem() {
-    //    return testnet;
+        boolean lastState = stagenetCheckMenu;
-    //}
-
-    public boolean onTestnetMenuItem() {
-        boolean lastState = testnetCheckMenu;
         setNet(!lastState, true); // set and save
         return !lastState;
     }
 
-    public void setNet(boolean testnetChecked, boolean save) {
+    public void setNet(boolean stagenetChecked, boolean save) {
-        this.testnetCheckMenu = testnetChecked;
+        this.stagenetCheckMenu = stagenetChecked;
-        NetworkType net = testnetChecked ? NetworkType.NetworkType_Testnet : NetworkType.NetworkType_Mainnet;
+        NetworkType net = stagenetChecked ? NetworkType.NetworkType_Stagenet : NetworkType.NetworkType_Mainnet;
         activityCallback.setNetworkType(net);
         activityCallback.showNet();
         if (save) {
             savePrefs(true); // use previous state as we just clicked it
         }
-        if (testnetChecked) {
+        if (stagenetChecked) {
-            setDaemon(daemonTestNet);
+            setDaemon(daemonStageNet);
         } else {
             setDaemon(daemonMainNet);
         }
         loadList();
     }
 
-    private static final String PREF_DAEMON_TESTNET = "daemon_testnet";
+    private static final String PREF_DAEMON_STAGENET = "daemon_stagenet";
     private static final String PREF_DAEMON_MAINNET = "daemon_mainnet";
-    private static final String PREF_SHOW_XMRTO_ENABLED = "info_xmrto_enabled_login";
 
     private static final String PREF_DAEMONLIST_MAINNET =
             "node.moneroworld.com:18089;node.xmrbackb.one;node.xmr.be";
 
-    private static final String PREF_DAEMONLIST_TESTNET =
+    private static final String PREF_DAEMONLIST_STAGENET =
-            "testnet.xmrchain.net";
+            "stagenet.monerujo.io;stagenet.xmr-tw.org";
 
-    private NodeList daemonTestNet;
+    private NodeList daemonStageNet;
     private NodeList daemonMainNet;
 
-    boolean showXmrtoEnabled = true;
-
     void loadPrefs() {
         SharedPreferences sharedPref = activityCallback.getPrefs();
 
         daemonMainNet = new NodeList(sharedPref.getString(PREF_DAEMON_MAINNET, PREF_DAEMONLIST_MAINNET));
-        daemonTestNet = new NodeList(sharedPref.getString(PREF_DAEMON_TESTNET, PREF_DAEMONLIST_TESTNET));
+        daemonStageNet = new NodeList(sharedPref.getString(PREF_DAEMON_STAGENET, PREF_DAEMONLIST_STAGENET));
-        setNet(testnetCheckMenu, false);
+        setNet(stagenetCheckMenu, false);
-
-        showXmrtoEnabled = sharedPref.getBoolean(PREF_SHOW_XMRTO_ENABLED, true);
-    }
-
-    void saveXmrToPrefs() {
-        SharedPreferences sharedPref = activityCallback.getPrefs();
-        SharedPreferences.Editor editor = sharedPref.edit();
-        editor.putBoolean(PREF_SHOW_XMRTO_ENABLED, showXmrtoEnabled);
-        editor.apply();
     }
 
     void savePrefs() {
         savePrefs(false);
     }
 
-    void savePrefs(boolean usePreviousTestnetState) {
+    void savePrefs(boolean usePreviousNetState) {
-        Timber.d("SAVE / %s", usePreviousTestnetState);
+        Timber.d("SAVE / %s", usePreviousNetState);
         // save the daemon address for the net
-        boolean testnet = testnetCheckMenu ^ usePreviousTestnetState;
+        boolean stagenet = stagenetCheckMenu ^ usePreviousNetState;
         String daemon = getDaemon();
-        if (testnet) {
+        if (stagenet) {
-            daemonTestNet.setRecent(daemon);
+            daemonStageNet.setRecent(daemon);
         } else {
             daemonMainNet.setRecent(daemon);
         }
@@ -427,8 +403,7 @@ public class LoginFragment extends Fragment implements WalletInfoAdapter.OnInter
         SharedPreferences sharedPref = activityCallback.getPrefs();
         SharedPreferences.Editor editor = sharedPref.edit();
         editor.putString(PREF_DAEMON_MAINNET, daemonMainNet.toString());
-        editor.putString(PREF_DAEMON_TESTNET, daemonTestNet.toString());
+        editor.putString(PREF_DAEMON_STAGENET, daemonStageNet.toString());
-        editor.putBoolean(PREF_SHOW_XMRTO_ENABLED, showXmrtoEnabled);
         editor.apply();
     }
 

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

@@ -335,6 +335,7 @@ public class ReceiveFragment extends Fragment {
     }
 
     public Bitmap generate(String text, int width, int height) {
+        if ((width <= 0) || (height <= 0)) return null;
         Map<EncodeHintType, Object> hints = new HashMap<>();
         hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
         hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.M);

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

@@ -59,6 +59,7 @@ public class TxFragment extends Fragment {
         TS_FORMATTER.setTimeZone(tz);
     }
 
+    private TextView tvAccount;
     private TextView tvTxTimestamp;
     private TextView tvTxId;
     private TextView tvTxKey;
@@ -88,6 +89,7 @@ public class TxFragment extends Fragment {
         tvDestinationBtc = (TextView) view.findViewById(R.id.tvDestinationBtc);
         tvTxAmountBtc = (TextView) view.findViewById(R.id.tvTxAmountBtc);
 
+        tvAccount = (TextView) view.findViewById(R.id.tvAccount);
         tvTxTimestamp = (TextView) view.findViewById(R.id.tvTxTimestamp);
         tvTxId = (TextView) view.findViewById(R.id.tvTxId);
         tvTxKey = (TextView) view.findViewById(R.id.tvTxKey);
@@ -222,6 +224,8 @@ public class TxFragment extends Fragment {
         activityCallback.setSubtitle(getString(R.string.tx_title));
         activityCallback.setToolbarButton(Toolbar.BUTTON_BACK);
 
+        tvAccount.setText("" + info.subaddrAccount);
+
         tvTxTimestamp.setText(TS_FORMATTER.format(new Date(info.timestamp * 1000)));
         tvTxId.setText(info.hash);
         tvTxKey.setText(info.txKey.isEmpty() ? "-" : info.txKey);
@@ -236,9 +240,6 @@ public class TxFragment extends Fragment {
         String sign = (info.direction == TransactionInfo.Direction.Direction_In ? "+" : "-");
 
         long realAmount = info.amount;
-        if (info.isPending) {
-            realAmount = realAmount - info.fee;
-        }
         tvTxAmount.setText(sign + Wallet.getDisplayAmount(realAmount));
 
         if ((info.fee > 0)) {

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

@@ -43,9 +43,7 @@ import com.m2049r.xmrwallet.model.Wallet;
 import com.m2049r.xmrwallet.service.exchange.api.ExchangeApi;
 import com.m2049r.xmrwallet.service.exchange.api.ExchangeCallback;
 import com.m2049r.xmrwallet.service.exchange.api.ExchangeRate;
-import com.m2049r.xmrwallet.service.exchange.kraken.ExchangeApiImpl;
 import com.m2049r.xmrwallet.util.Helper;
-import com.m2049r.xmrwallet.util.OkHttpClientSingleton;
 import com.m2049r.xmrwallet.widget.Toolbar;
 
 import java.text.NumberFormat;
@@ -101,7 +99,9 @@ public class WalletFragment extends Fragment
         ivSynced = (ImageView) view.findViewById(R.id.ivSynced);
 
         sCurrency = (Spinner) view.findViewById(R.id.sCurrency);
-        sCurrency.setAdapter(ArrayAdapter.createFromResource(getContext(), R.array.currency, R.layout.item_spinner_balance));
+        ArrayAdapter currencyAdapter = ArrayAdapter.createFromResource(getContext(), R.array.currency, R.layout.item_spinner_balance);
+        currencyAdapter.setDropDownViewResource(R.layout.item_spinner_dropdown_item);
+        sCurrency.setAdapter(currencyAdapter);
 
         bSend = (Button) view.findViewById(R.id.bSend);
         bReceive = (Button) view.findViewById(R.id.bReceive);
@@ -150,7 +150,7 @@ public class WalletFragment extends Fragment
         // at this point selection is XMR in case of error
         String displayB;
         double amountA = Double.parseDouble(Wallet.getDisplayAmount(unlockedBalance)); // crash if this fails!
-        if (!"XMR".equals(balanceCurrency)) { // not XMR
+        if (!Helper.CRYPTO.equals(balanceCurrency)) { // not XMR
             double amountB = amountA * balanceRate;
             displayB = Helper.getFormattedAmount(amountB, false);
         } else { // XMR
@@ -159,10 +159,10 @@ public class WalletFragment extends Fragment
         tvBalance.setText(displayB);
     }
 
-    String balanceCurrency = "XMR";
+    String balanceCurrency = Helper.CRYPTO;
     double balanceRate = 1.0;
 
-    private final ExchangeApi exchangeApi = new ExchangeApiImpl(OkHttpClientSingleton.getOkHttpClient());
+    private final ExchangeApi exchangeApi = Helper.getExchangeApi();
 
     void refreshBalance() {
         if (sCurrency.getSelectedItemPosition() == 0) { // XMR
@@ -170,9 +170,10 @@ public class WalletFragment extends Fragment
             tvBalance.setText(Helper.getFormattedAmount(amountXmr, true));
         } else { // not XMR
             String currency = (String) sCurrency.getSelectedItem();
+            Timber.d(currency);
             if (!currency.equals(balanceCurrency) || (balanceRate <= 0)) {
                 showExchanging();
-                exchangeApi.queryExchangeRate("XMR", currency,
+                exchangeApi.queryExchangeRate(Helper.CRYPTO, currency,
                         new ExchangeCallback() {
                             @Override
                             public void onSuccess(final ExchangeRate exchangeRate) {
@@ -228,10 +229,10 @@ public class WalletFragment extends Fragment
 
     public void exchange(final ExchangeRate exchangeRate) {
         hideExchanging();
-        if (!"XMR".equals(exchangeRate.getBaseCurrency())) {
+        if (!Helper.CRYPTO.equals(exchangeRate.getBaseCurrency())) {
             Timber.e("Not XMR");
             sCurrency.setSelection(0, true);
-            balanceCurrency = "XMR";
+            balanceCurrency = Helper.CRYPTO;
             balanceRate = 1.0;
         } else {
             int spinnerPosition = ((ArrayAdapter) sCurrency.getAdapter()).getPosition(exchangeRate.getQuoteCurrency());
@@ -256,7 +257,7 @@ public class WalletFragment extends Fragment
     // called from activity
 
     public void onRefreshed(final Wallet wallet, final boolean full) {
-        Timber.d("onRefreshed()");
+        Timber.d("onRefreshed(%b)", full);
         if (full) {
             List<TransactionInfo> list = wallet.getHistory().getAll();
             adapter.setInfos(list);
@@ -270,6 +271,7 @@ public class WalletFragment extends Fragment
             bSend.setVisibility(View.VISIBLE);
             bSend.setEnabled(true);
         }
+        enableAccountsList(true);
     }
 
     boolean walletLoaded = false;
@@ -313,7 +315,7 @@ public class WalletFragment extends Fragment
         if (wallet == null) return;
         walletTitle = wallet.getName();
         String watchOnly = (wallet.isWatchOnly() ? getString(R.string.label_watchonly) : "");
-        walletSubtitle = wallet.getAddress().substring(0, 10) + "…" + watchOnly;
+        walletSubtitle = wallet.getAccountLabel();
         activityCallback.setTitle(walletTitle, walletSubtitle);
         Timber.d("wallet title is %s", walletTitle);
     }
@@ -323,10 +325,13 @@ public class WalletFragment extends Fragment
     private String walletSubtitle = null;
     private long unlockedBalance = 0;
 
+    private int accountIdx = -1;
+
     private void updateStatus(Wallet wallet) {
         if (!isAdded()) return;
         Timber.d("updateStatus()");
-        if (walletTitle == null) {
+        if ((walletTitle == null) || (accountIdx != wallet.getAccountIndex())) {
+            accountIdx = wallet.getAccountIndex();
             setActivityTitle(wallet);
         }
         long balance = wallet.getBalance();
@@ -352,7 +357,7 @@ public class WalletFragment extends Fragment
                 setProgress(x);
                 ivSynced.setVisibility(View.GONE);
             } else {
-                sync = getString(R.string.status_synced) + formatter.format(wallet.getBlockChainHeight());
+                sync = getString(R.string.status_synced) + " " + formatter.format(wallet.getBlockChainHeight());
                 ivSynced.setVisibility(View.VISIBLE);
             }
         } else {
@@ -412,9 +417,28 @@ public class WalletFragment extends Fragment
         super.onResume();
         Timber.d("onResume()");
         activityCallback.setTitle(walletTitle, walletSubtitle);
-        activityCallback.setToolbarButton(Toolbar.BUTTON_CLOSE);
+        //activityCallback.setToolbarButton(Toolbar.BUTTON_CLOSE); // TODO: Close button somewhere else
+        activityCallback.setToolbarButton(Toolbar.BUTTON_NONE);
         setProgress(syncProgress);
         setProgress(syncText);
         showReceive();
+        if (activityCallback.isSynced()) enableAccountsList(true);
     }
+
+    @Override
+    public void onPause() {
+        enableAccountsList(false);
+        super.onPause();
+    }
+
+    public interface DrawerLocker {
+        void setDrawerEnabled(boolean enabled);
+    }
+
+    private void enableAccountsList(boolean enable) {
+        if (activityCallback instanceof DrawerLocker) {
+            ((DrawerLocker) activityCallback).setDrawerEnabled(enable);
+        }
+    }
+
 }

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

@@ -86,6 +86,10 @@ public class WalletNode {
         return name;
     }
 
+    public NetworkType getNetworkType() {
+        return networkType;
+    }
+
     public String getAddress() {
         return host + ":" + port;
     }

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

@@ -233,7 +233,7 @@ public class SendAddressWizardFragment extends SendWizardFragment {
 
     private boolean isBitcoinAddress() {
         String address = etAddress.getEditText().getText().toString();
-        if ((address.length() >= 27) && (address.length() <= 34))
+        if ((address.length() >= 27) && (address.length() <= 35))
             return BitcoinAddressValidator.validate(address);
         else
             return false;

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

@@ -20,6 +20,9 @@ import android.os.Bundle;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
+import android.widget.ImageButton;
+import android.widget.ImageView;
+import android.widget.LinearLayout;
 import android.widget.TextView;
 
 import com.m2049r.xmrwallet.R;
@@ -57,8 +60,9 @@ public class SendAmountWizardFragment extends SendWizardFragment {
 
     private TextView tvFunds;
     private ExchangeTextView evAmount;
-    //private Button bSendAll;
+    private View llAmount;
-    private NumberPadView numberPad;
+    private View rlSweep;
+    private ImageButton ibSweep;
 
     @Override
     public View onCreateView(LayoutInflater inflater, ViewGroup container,
@@ -73,37 +77,64 @@ public class SendAmountWizardFragment extends SendWizardFragment {
         tvFunds = (TextView) view.findViewById(R.id.tvFunds);
 
         evAmount = (ExchangeTextView) view.findViewById(R.id.evAmount);
-        numberPad = (NumberPadView) view.findViewById(R.id.numberPad);
+        ((NumberPadView) view.findViewById(R.id.numberPad)).setListener(evAmount);
-        numberPad.setListener(evAmount);
 
-        /*
+        rlSweep = view.findViewById(R.id.rlSweep);
-        bSendAll = (Button) view.findViewById(R.id.bSendAll);
+        llAmount = view.findViewById(R.id.llAmount);
-        bSendAll.setOnClickListener(new View.OnClickListener() {
+        view.findViewById(R.id.ivSweep).setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
-                // TODO: send all - figure out how to display this
+                sweepAll(false);
+            }
+        });
+
+        ibSweep = (ImageButton) view.findViewById(R.id.ibSweep);
+
+        ibSweep.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                sweepAll(true);
             }
         });
-*/
 
         Helper.hideKeyboard(getActivity());
 
         return view;
     }
 
+    private boolean spendAllMode = false;
+
+    private void sweepAll(boolean spendAllMode) {
+        if (spendAllMode) {
+            ibSweep.setVisibility(View.INVISIBLE);
+            llAmount.setVisibility(View.GONE);
+            rlSweep.setVisibility(View.VISIBLE);
+        } else {
+            ibSweep.setVisibility(View.VISIBLE);
+            llAmount.setVisibility(View.VISIBLE);
+            rlSweep.setVisibility(View.GONE);
+        }
+        this.spendAllMode = spendAllMode;
+    }
 
     @Override
     public boolean onValidateFields() {
-        if (!evAmount.validate(maxFunds)) {
+        if (spendAllMode) {
-            return false;
+            if (sendListener != null) {
-        }
+                sendListener.getTxData().setAmount(Wallet.SWEEP_ALL);
+            }
+        } else {
+            if (!evAmount.validate(maxFunds)) {
+                return false;
+            }
 
-        if (sendListener != null) {
+            if (sendListener != null) {
-            String xmr = evAmount.getAmount();
+                String xmr = evAmount.getAmount();
-            if (xmr != null) {
+                if (xmr != null) {
-                sendListener.getTxData().setAmount(Wallet.getAmountFromString(xmr));
+                    sendListener.getTxData().setAmount(Wallet.getAmountFromString(xmr));
-            } else {
+                } else {
-                sendListener.getTxData().setAmount(0L);
+                    sendListener.getTxData().setAmount(0L);
+                }
             }
         }
         return true;

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

@@ -247,7 +247,7 @@ public class SendBtcAmountWizardFragment extends SendWizardFragment {
 
     private XmrToApi xmrToApi = null;
 
-    private final XmrToApi getXmrToApi() {
+    private XmrToApi getXmrToApi() {
         if (xmrToApi == null) {
             synchronized (this) {
                 if (xmrToApi == null) {

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

@@ -47,6 +47,7 @@ import com.m2049r.xmrwallet.layout.SpendViewPager;
 import com.m2049r.xmrwallet.model.PendingTransaction;
 import com.m2049r.xmrwallet.util.Helper;
 import com.m2049r.xmrwallet.util.NodeList;
+import com.m2049r.xmrwallet.util.Notice;
 import com.m2049r.xmrwallet.util.UserNotes;
 import com.m2049r.xmrwallet.widget.DotBar;
 import com.m2049r.xmrwallet.widget.Toolbar;
@@ -119,27 +120,8 @@ public class SendFragment extends Fragment
         arrowPrev = getResources().getDrawable(R.drawable.ic_navigate_prev_white_24dp);
         arrowNext = getResources().getDrawable(R.drawable.ic_navigate_next_white_24dp);
 
-        llXmrToEnabled = view.findViewById(R.id.llXmrToEnabled);
+        ViewGroup llNotice = (ViewGroup) view.findViewById(R.id.llNotice);
-        llXmrToEnabled.setOnClickListener(new View.OnClickListener() {
+        Notice.showAll(llNotice,".*_send");
-            @Override
-            public void onClick(View v) {
-                HelpFragment.display(getChildFragmentManager(), R.string.help_xmrto);
-
-            }
-        });
-        ibXmrToInfoClose = view.findViewById(R.id.ibXmrToInfoClose);
-        ibXmrToInfoClose.setOnClickListener(new View.OnClickListener() {
-            @Override
-            public void onClick(View v) {
-                llXmrToEnabled.setVisibility(View.GONE);
-                showXmrtoEnabled = false;
-                saveXmrToPrefs();
-            }
-        });
-        loadPrefs();
-        if (!showXmrtoEnabled) {
-            llXmrToEnabled.setVisibility(View.GONE);
-        }
 
         spendViewPager = (SpendViewPager) view.findViewById(R.id.pager);
         pagerAdapter = new SpendPagerAdapter(getChildFragmentManager());
@@ -291,7 +273,7 @@ public class SendFragment extends Fragment
                     pagerAdapter.notifyDataSetChanged();
                 }
             });
-            Timber.d("New Mode = " + mode.toString());
+            Timber.d("New Mode = %s", mode.toString());
         }
     }
 
@@ -350,7 +332,7 @@ public class SendFragment extends Fragment
         @Override
         public SendWizardFragment getItem(int position) {
             Timber.d("getItem(%d) CREATE", position);
-            Timber.d("Mode=" + mode.toString());
+            Timber.d("Mode=%s", mode.toString());
             if (mode == Mode.XMR) {
                 switch (position) {
                     case POS_ADDRESS:

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

@@ -36,6 +36,7 @@ import com.m2049r.xmrwallet.util.UserNotes;
 import timber.log.Timber;
 
 public class SendSettingsWizardFragment extends SendWizardFragment {
+    final static public int MIXIN = 6;
 
     public static SendSettingsWizardFragment newInstance(Listener listener) {
         SendSettingsWizardFragment instance = new SendSettingsWizardFragment();
@@ -54,15 +55,12 @@ public class SendSettingsWizardFragment extends SendWizardFragment {
         TxData getTxData();
     }
 
-    // Mixin = Ringsize - 1
-    final static int Mixins[] = {6, 9, 12, 25}; // must match the layout XML / "@array/mixin"
     final static PendingTransaction.Priority Priorities[] =
             {PendingTransaction.Priority.Priority_Default,
                     PendingTransaction.Priority.Priority_Low,
                     PendingTransaction.Priority.Priority_Medium,
                     PendingTransaction.Priority.Priority_High}; // must match the layout XML
 
-    private Spinner sMixin;
     private Spinner sPriority;
     private EditText etNotes;
     private EditText etDummy;
@@ -77,7 +75,6 @@ public class SendSettingsWizardFragment extends SendWizardFragment {
         View view = inflater.inflate(
                 R.layout.fragment_send_settings, container, false);
 
-        sMixin = (Spinner) view.findViewById(R.id.sMixin);
         sPriority = (Spinner) view.findViewById(R.id.sPriority);
 
         etNotes = (EditText) view.findViewById(R.id.etNotes);
@@ -104,7 +101,7 @@ public class SendSettingsWizardFragment extends SendWizardFragment {
         if (sendListener != null) {
             TxData txData = sendListener.getTxData();
             txData.setPriority(Priorities[sPriority.getSelectedItemPosition()]);
-            txData.setMixin(Mixins[sMixin.getSelectedItemPosition()]);
+            txData.setMixin(MIXIN);
             txData.setUserNotes(new UserNotes(etNotes.getText().toString()));
         }
         return true;

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

@@ -17,8 +17,11 @@
 package com.m2049r.xmrwallet.model;
 
 import java.util.ArrayList;
+import java.util.Iterator;
 import java.util.List;
 
+import timber.log.Timber;
+
 public class TransactionHistory {
     static {
         System.loadLibrary("monerujo");
@@ -26,8 +29,18 @@ public class TransactionHistory {
 
     private long handle;
 
-    public TransactionHistory(long handle) {
+    int accountIndex;
+
+    public void setAccountFor(Wallet wallet) {
+        if (accountIndex != wallet.getAccountIndex()) {
+            this.accountIndex = wallet.getAccountIndex();
+            refreshWithNotes(wallet);
+        }
+    }
+
+    public TransactionHistory(long handle, int accountIndex) {
         this.handle = handle;
+        this.accountIndex = accountIndex;
     }
 
     public void loadNotes(Wallet wallet) {
@@ -36,7 +49,7 @@ public class TransactionHistory {
         }
     }
 
-    public native int getCount();
+    public native int getCount(); // over all accounts/subaddresses
 
     //private native long getTransactionByIndexJ(int i);
 
@@ -53,8 +66,23 @@ public class TransactionHistory {
         loadNotes(wallet);
     }
 
+//    public void refresh() {
+//        transactions = refreshJ();
+//    }
+
     public void refresh() {
-        transactions = refreshJ();
+        List<TransactionInfo> t = refreshJ();
+        Timber.d("refreshed %d", t.size());
+        for (Iterator<TransactionInfo> iterator = t.iterator(); iterator.hasNext(); ) {
+            TransactionInfo info = iterator.next();
+            if (info.subaddrAccount != accountIndex) {
+                iterator.remove();
+                Timber.d("removed %s", info.hash);
+            } else {
+                Timber.d("kept %s", info.hash);
+            }
+        }
+        transactions = t;
     }
 
     private native List<TransactionInfo> refreshJ();

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

@@ -53,6 +53,11 @@ public class TransactionInfo implements Parcelable, Comparable<TransactionInfo>
         }
     }
 
+//    virtual std::set<uint32_t> subaddrIndex() const = 0;
+//    virtual uint32_t subaddrAccount() const = 0;
+//    virtual std::string label() const = 0;
+//    virtual uint64_t confirmations() const = 0;
+
     public Direction direction;
     public boolean isPending;
     public boolean isFailed;
@@ -62,6 +67,7 @@ public class TransactionInfo implements Parcelable, Comparable<TransactionInfo>
     public String hash;
     public long timestamp;
     public String paymentId;
+    public int subaddrAccount;
     public long confirmations;
     public List<Transfer> transfers;
 
@@ -78,6 +84,7 @@ public class TransactionInfo implements Parcelable, Comparable<TransactionInfo>
             String hash,
             long timestamp,
             String paymentId,
+            int subaddrAccount,
             long confirmations,
             List<Transfer> transfers) {
         this.direction = Direction.values()[direction];
@@ -89,6 +96,7 @@ public class TransactionInfo implements Parcelable, Comparable<TransactionInfo>
         this.hash = hash;
         this.timestamp = timestamp;
         this.paymentId = paymentId;
+        this.subaddrAccount = subaddrAccount;
         this.confirmations = confirmations;
         this.transfers = transfers;
     }
@@ -108,6 +116,7 @@ public class TransactionInfo implements Parcelable, Comparable<TransactionInfo>
         out.writeString(hash);
         out.writeLong(timestamp);
         out.writeString(paymentId);
+        out.writeInt(subaddrAccount);
         out.writeLong(confirmations);
         out.writeList(transfers);
         out.writeString(txKey);
@@ -134,6 +143,7 @@ public class TransactionInfo implements Parcelable, Comparable<TransactionInfo>
         hash = in.readString();
         timestamp = in.readLong();
         paymentId = in.readString();
+        subaddrAccount = in.readInt();
         confirmations = in.readLong();
         transfers = in.readArrayList(Transfer.class.getClassLoader());
         txKey = in.readString();

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

@@ -20,12 +20,26 @@ import com.m2049r.xmrwallet.data.TxData;
 
 import java.io.File;
 
+import timber.log.Timber;
+
 public class Wallet {
+    final static public long SWEEP_ALL = Long.MAX_VALUE;
+
     static {
         System.loadLibrary("monerujo");
     }
 
-    static final String TAG = "Wallet";
+    private int accountIndex = 0;
+
+    public int getAccountIndex() {
+        return accountIndex;
+    }
+
+    public void setAccountIndex(int accountIndex) {
+        Timber.d("setAccountIndex(%d)", accountIndex);
+        this.accountIndex = accountIndex;
+        getHistory().setAccountFor(this);
+    }
 
     public String getName() {
         return new File(getPath()).getName();
@@ -38,6 +52,11 @@ public class Wallet {
         this.handle = handle;
     }
 
+    Wallet(long handle, int accountIndex) {
+        this.handle = handle;
+        this.accountIndex = accountIndex;
+    }
+
     public enum Status {
         Status_Ok,
         Status_Error,
@@ -66,16 +85,11 @@ public class Wallet {
 
     public native boolean setPassword(String password);
 
-    private String address = null;
-
     public String getAddress() {
-        if (address == null) {
+        return getAddressJ(accountIndex);
-            address = getAddressJ();
-        }
-        return address;
     }
 
-    private native String getAddressJ();
+    private native String getAddressJ(int accountIndex);
 
     public native String getPath();
 
@@ -132,9 +146,21 @@ public class Wallet {
 //TODO virtual void setTrustedDaemon(bool arg) = 0;
 //TODO virtual bool trustedDaemon() const = 0;
 
-    public native long getBalance();
+    public long getBalance() {
+        return getBalance(accountIndex);
+    }
 
-    public native long getUnlockedBalance();
+    public native long getBalance(int accountIndex);
+
+    public native long getBalanceAll();
+
+    public long getUnlockedBalance() {
+        return getUnlockedBalance(accountIndex);
+    }
+
+    public native long getUnlockedBalanceAll();
+
+    public native long getUnlockedBalance(int accountIndex);
 
     public native boolean isWatchOnly();
 
@@ -164,9 +190,7 @@ public class Wallet {
 
     public static native boolean isAddressValid(String address, int networkType);
 
-//TODO static static bool keyValid(const std::string &secret_key_string, const std::string &address_string, bool isViewKey, bool testnet, std::string &error);
+    public static native String getPaymentIdFromAddress(String address, int networkType);
-
-    public static native String getPaymentIdFromAddress(String address, boolean isTestNet);
 
     public static native long getMaximumAllowedAmount();
 
@@ -209,14 +233,23 @@ public class Wallet {
                                                 PendingTransaction.Priority priority) {
         disposePendingTransaction();
         int _priority = priority.getValue();
-        long txHandle = createTransactionJ(dst_addr, payment_id, amount, mixin_count, _priority);
+        long txHandle =
+                (amount == SWEEP_ALL ?
+                        createSweepTransaction(dst_addr, payment_id, mixin_count, _priority,
+                                accountIndex) :
+                        createTransactionJ(dst_addr, payment_id, amount, mixin_count, _priority,
+                                accountIndex));
         pendingTransaction = new PendingTransaction(txHandle);
         return pendingTransaction;
     }
 
     private native long createTransactionJ(String dst_addr, String payment_id,
                                            long amount, int mixin_count,
-                                           int priority);
+                                           int priority, int accountIndex);
+
+    private native long createSweepTransaction(String dst_addr, String payment_id,
+                                               int mixin_count,
+                                               int priority, int accountIndex);
 
 
     public PendingTransaction createSweepUnmixableTransaction() {
@@ -243,7 +276,7 @@ public class Wallet {
 
     public TransactionHistory getHistory() {
         if (history == null) {
-            history = new TransactionHistory(getHistoryJ());
+            history = new TransactionHistory(getHistoryJ(), accountIndex);
         }
         return history;
     }
@@ -275,5 +308,43 @@ public class Wallet {
 //virtual bool parse_uri(const std::string &uri, std::string &address, std::string &payment_id, uint64_t &tvAmount, std::string &tx_description, std::string &recipient_name, std::vector<std::string> &unknown_parameters, std::string &error) = 0;
 //virtual bool rescanSpent() = 0;
 
+    private static final String NEW_ACCOUNT_NAME = "Untitled account"; // src/wallet/wallet2.cpp:941
 
+    public void addAccount() {
+        addAccount(NEW_ACCOUNT_NAME);
+    }
+
+    public native void addAccount(String label);
+
+    public String getAccountLabel() {
+        return getAccountLabel(accountIndex);
+    }
+
+    public String getAccountLabel(int accountIndex) {
+        String label = getSubaddressLabel(accountIndex, 0);
+        if (label.equals(NEW_ACCOUNT_NAME)) {
+            String address = getAddressJ(accountIndex);
+            int len = address.length();
+            return address.substring(0, 6) +
+                    "\u2026" + address.substring(len - 6, len);
+        } else return label;
+    }
+
+    public native String getSubaddressLabel(int accountIndex, int addressIndex);
+
+    public void setAccountLabel(String label) {
+        setSubaddressLabel(accountIndex, 0, label);
+    }
+
+    public void setAccountLabel(int accountIndex, String label) {
+        setSubaddressLabel(accountIndex, 0, label);
+    }
+
+    public native void setSubaddressLabel(int accountIndex, int addressIndex, String label);
+
+    public int numAccounts() {
+        return numSubaddressAccounts();
+    }
+
+    public native int numSubaddressAccounts();
 }

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

@@ -41,6 +41,7 @@ public class WalletManager {
         if (WalletManager.Instance == null) {
             WalletManager.Instance = new WalletManager();
         }
+
         return WalletManager.Instance;
     }
 
@@ -79,6 +80,13 @@ public class WalletManager {
 
     private native long createWalletJ(String path, String password, String language, int networkType);
 
+    public Wallet openAccount(String path, int accountIndex, String password) {
+        long walletHandle = openWalletJ(path, password, getNetworkType().getValue());
+        Wallet wallet = new Wallet(walletHandle, accountIndex);
+        manageWallet(wallet);
+        return wallet;
+    }
+
     public Wallet openWallet(String path, String password) {
         long walletHandle = openWalletJ(path, password, getNetworkType().getValue());
         Wallet wallet = new Wallet(walletHandle);
@@ -215,7 +223,7 @@ public class WalletManager {
     //public void setDaemon(String address, NetworkType networkType, String username, String password) {
     public void setDaemon(WalletNode walletNode) {
         this.daemonAddress = walletNode.getAddress();
-        this.networkType = networkType;
+        this.networkType = walletNode.getNetworkType();
         this.daemonUsername = walletNode.getUsername();
         this.daemonPassword = walletNode.getPassword();
         setDaemonAddressJ(daemonAddress);
@@ -227,7 +235,6 @@ public class WalletManager {
 
     public String getDaemonAddress() {
         if (daemonAddress == null) {
-            // assume testnet not explicitly initialised
             throw new IllegalStateException("use setDaemon() to initialise daemon and net first!");
         }
         return this.daemonAddress;
@@ -235,13 +242,13 @@ public class WalletManager {
 
     private native void setDaemonAddressJ(String address);
 
-    String daemonUsername = "";
+    private String daemonUsername = "";
 
     public String getDaemonUsername() {
         return daemonUsername;
     }
 
-    String daemonPassword = "";
+    private String daemonPassword = "";
 
     public String getDaemonPassword() {
         return daemonPassword;
@@ -269,5 +276,23 @@ public class WalletManager {
 
 //TODO static std::tuple<bool, std::string, std::string, std::string, std::string> checkUpdates(const std::string &software, const std::string &subdir);
 
+    static public native void initLogger(String argv0, String defaultLogBaseName);
 
+    //TODO: maybe put these in an enum like in monero core - but why?
+    static public int LOGLEVEL_SILENT = -1;
+    static public int LOGLEVEL_WARN = 0;
+    static public int LOGLEVEL_INFO = 1;
+    static public int LOGLEVEL_DEBUG = 2;
+    static public int LOGLEVEL_TRACE = 3;
+    static public int LOGLEVEL_MAX = 4;
+
+    static public native void setLogLevel(int level);
+
+    static public native void logDebug(String category, String message);
+
+    static public native void logInfo(String category, String message);
+
+    static public native void logWarning(String category, String message);
+
+    static public native void logError(String category, String message);
 }

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

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017 m2049r et al.
+ * Copyright (c) 2017-2018 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.
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package com.m2049r.xmrwallet.service.exchange.kraken;
+package com.m2049r.xmrwallet.service.exchange.coinmarketcap;
 
 import android.support.annotation.NonNull;
 import android.support.annotation.VisibleForTesting;
@@ -23,6 +23,7 @@ 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 com.m2049r.xmrwallet.util.Helper;
 
 import org.json.JSONArray;
 import org.json.JSONException;
@@ -37,6 +38,7 @@ import okhttp3.Request;
 import okhttp3.Response;
 
 public class ExchangeApiImpl implements ExchangeApi {
+    static final String CRYPTO_ID = "328";
 
     @NonNull
     private final OkHttpClient okHttpClient;
@@ -52,7 +54,7 @@ public class ExchangeApiImpl implements ExchangeApi {
     }
 
     public ExchangeApiImpl(@NonNull final OkHttpClient okHttpClient) {
-        this(okHttpClient, HttpUrl.parse("https://api.kraken.com/0/public/Ticker"));
+        this(okHttpClient, HttpUrl.parse("https://api.coinmarketcap.com/v2/ticker/"));
     }
 
     @Override
@@ -67,12 +69,12 @@ public class ExchangeApiImpl implements ExchangeApi {
         boolean inverse = false;
         String fiat = null;
 
-        if (baseCurrency.equals("XMR")) {
+        if (baseCurrency.equals(Helper.CRYPTO)) {
             fiat = quoteCurrency;
             inverse = false;
         }
 
-        if (quoteCurrency.equals("XMR")) {
+        if (quoteCurrency.equals(Helper.CRYPTO)) {
             fiat = baseCurrency;
             inverse = true;
         }
@@ -85,7 +87,8 @@ public class ExchangeApiImpl implements ExchangeApi {
         final boolean swapAssets = inverse;
 
         final HttpUrl url = baseUrl.newBuilder()
-                .addQueryParameter("pair", "XMR" + fiat)
+                .addEncodedPathSegments(CRYPTO_ID + "/")
+                .addQueryParameter("convert", fiat)
                 .build();
 
         final Request httpRequest = createHttpRequest(url);
@@ -101,12 +104,12 @@ public class ExchangeApiImpl implements ExchangeApi {
                 if (response.isSuccessful()) {
                     try {
                         final JSONObject json = new JSONObject(response.body().string());
-                        final JSONArray jsonError = json.getJSONArray("error");
+                        final JSONObject metadata = json.getJSONObject("metadata");
-                        if (jsonError.length() > 0) {
+                        if (!metadata.isNull("error")) {
-                            final String errorMsg = jsonError.getString(0);
+                            final String errorMsg = metadata.getString("error");
-                            callback.onError(new ExchangeException(response.code(), errorMsg));
+                            callback.onError(new ExchangeException(response.code(), (String) errorMsg));
                         } else {
-                            final JSONObject jsonResult = json.getJSONObject("result");
+                            final JSONObject jsonResult = json.getJSONObject("data");
                             reportSuccess(jsonResult, swapAssets, callback);
                         }
                     } catch (JSONException ex) {
@@ -130,7 +133,6 @@ public class ExchangeApiImpl implements ExchangeApi {
         }
     }
 
-
     private Request createHttpRequest(final HttpUrl url) {
         return new Request.Builder()
                 .url(url)

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

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017 m2049r et al.
+ * Copyright (c) 2017-2018 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.
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package com.m2049r.xmrwallet.service.exchange.kraken;
+package com.m2049r.xmrwallet.service.exchange.coinmarketcap;
 
 import android.support.annotation.NonNull;
 
@@ -25,6 +25,7 @@ import org.json.JSONArray;
 import org.json.JSONException;
 import org.json.JSONObject;
 
+import java.util.Iterator;
 import java.util.NoSuchElementException;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
@@ -37,7 +38,7 @@ class ExchangeRateImpl implements ExchangeRate {
 
     @Override
     public String getServiceName() {
-        return "kraken.com";
+        return "coinmarketcap.com";
     }
 
     @Override
@@ -64,29 +65,21 @@ class ExchangeRateImpl implements ExchangeRate {
 
     ExchangeRateImpl(final JSONObject jsonObject, final boolean swapAssets) throws JSONException, ExchangeException {
         try {
-            final String key = jsonObject.keys().next(); // we expect only one
+            final String baseC = jsonObject.getString("symbol");
-            Pattern pattern = Pattern.compile("^X(.*?)Z(.*?)$");
+            final JSONObject quotes = jsonObject.getJSONObject("quotes");
-            Matcher matcher = pattern.matcher(key);
+            final Iterator<String> keys = quotes.keys();
-            if (matcher.find()) {
+            String key = null;
-                this.baseCurrency = swapAssets ? matcher.group(2) : matcher.group(1);
+            // get key which is not USD unless it is the only one
-                this.quoteCurrency = swapAssets ? matcher.group(1) : matcher.group(2);
+            while (keys.hasNext()) {
-            } else {
+                key = keys.next();
-                throw new ExchangeException("no pair returned!");
+                if (!key.equals("USD")) break;
-            }
-
-            JSONObject pair = jsonObject.getJSONObject(key);
-            JSONArray close = pair.getJSONArray("c");
-            String closePrice = close.getString(0);
-            if (closePrice != null) {
-                try {
-                    double rate = Double.parseDouble(closePrice);
-                    this.rate = swapAssets ? (1 / rate) : rate;
-                } catch (NumberFormatException ex) {
-                    throw new ExchangeException(ex.getLocalizedMessage());
-                }
-            } else {
-                throw new ExchangeException("no close price returned!");
             }
+            final String quoteC = key;
+            baseCurrency = swapAssets ? quoteC : baseC;
+            quoteCurrency = swapAssets ? baseC : quoteC;
+            JSONObject quote = quotes.getJSONObject(key);
+            double price = quote.getDouble("price");
+            this.rate = swapAssets ? (1d / price) : price;
         } catch (NoSuchElementException ex) {
             throw new ExchangeException(ex.getLocalizedMessage());
         }

app/src/main/java/com/m2049r/xmrwallet/util/BitcoinAddressValidator.java

@@ -66,6 +66,8 @@ public class BitcoinAddressValidator {
 
         byte[] result = new byte[25];
         byte[] numBytes = num.toByteArray();
+        if (num.bitLength() > 200) return null;
+
         if (num.bitLength() == 200) {
             System.arraycopy(numBytes, 1, result, 0, 25);
         } else {

app/src/main/java/com/m2049r/xmrwallet/util/CrazyPassEncoder.java

@@ -0,0 +1,54 @@
+package com.m2049r.xmrwallet.util;
+
+import com.m2049r.xmrwallet.model.WalletManager;
+
+import java.math.BigInteger;
+
+public class CrazyPassEncoder {
+    static final String BASE = "23456789ABCDEFGHJKLMNPQRSTUVWXYZ";
+    static final int PW_CHARS = 52;
+
+    // this takes a 32 byte buffer and converts it to 52 alphnumeric characters
+    // separated by blanks every 4 characters = 13 groups of 4
+    // always (padding by Xs if need be
+    static public String encode(byte[] data) {
+        if (data.length != 32) throw new IllegalArgumentException("data[] is not 32 bytes long");
+        BigInteger rest = new BigInteger(1, data);
+        BigInteger remainder;
+        final StringBuilder result = new StringBuilder();
+        final BigInteger base = BigInteger.valueOf(BASE.length());
+        int i = 0;
+        do {
+            if ((i > 0) && (i % 4 == 0)) result.append(' ');
+            i++;
+            remainder = rest.remainder(base);
+            rest = rest.divide(base);
+            result.append(BASE.charAt(remainder.intValue()));
+        } while (!BigInteger.ZERO.equals(rest));
+        // pad it
+        while (i < PW_CHARS) {
+            if ((i > 0) && (i % 4 == 0)) result.append(' ');
+            result.append('2');
+            i++;
+        }
+        return result.toString();
+    }
+
+    static public String reformat(String password) {
+        // maybe this is a CrAzYpass without blanks? or lowercase letters
+        String noBlanks = password.toUpperCase().replaceAll(" ", "");
+        if (noBlanks.length() == PW_CHARS) { // looks like a CrAzYpass
+            // insert blanks every 4 characters
+            StringBuilder sb = new StringBuilder();
+            for (int i = 0; i < PW_CHARS; i++) {
+                if ((i > 0) && (i % 4 == 0)) sb.append(' ');
+                char c = noBlanks.charAt(i);
+                if (BASE.indexOf(c) < 0) return null; // invalid character found
+                sb.append(c);
+            }
+            return sb.toString();
+        } else {
+            return null; // not a CrAzYpass
+        }
+    }
+}

app/src/main/java/com/m2049r/xmrwallet/util/FingerprintHelper.java

@@ -0,0 +1,45 @@
+package com.m2049r.xmrwallet.util;
+
+import android.app.KeyguardManager;
+import android.content.Context;
+import android.hardware.fingerprint.FingerprintManager;
+import android.os.Build;
+import android.os.CancellationSignal;
+
+public class FingerprintHelper {
+
+    public static boolean isDeviceSupported(Context context) {
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
+            return false;
+        }
+
+        FingerprintManager fingerprintManager = context.getSystemService(FingerprintManager.class);
+        KeyguardManager keyguardManager = context.getSystemService(KeyguardManager.class);
+
+        return (keyguardManager != null) && (fingerprintManager != null) &&
+                keyguardManager.isKeyguardSecure() &&
+                fingerprintManager.isHardwareDetected() &&
+                fingerprintManager.hasEnrolledFingerprints();
+    }
+
+    public static boolean isFingerPassValid(Context context, String wallet) {
+        try {
+            KeyStoreHelper.loadWalletUserPass(context, wallet);
+            return true;
+        } catch (KeyStoreHelper.BrokenPasswordStoreException ex) {
+            return false;
+        }
+    }
+
+    public static void authenticate(Context context, CancellationSignal cancelSignal,
+                                    FingerprintManager.AuthenticationCallback callback) {
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
+            return;
+        }
+
+        FingerprintManager manager = context.getSystemService(FingerprintManager.class);
+        if (manager != null) {
+            manager.authenticate(null, cancelSignal, 0, callback, null);
+        }
+    }
+}

app/src/main/java/com/m2049r/xmrwallet/util/Notice.java

@@ -0,0 +1,135 @@
+/*
+ * Copyright (c) 2018 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.util;
+
+import android.content.Context;
+import android.content.SharedPreferences;
+import android.support.v4.app.FragmentActivity;
+import android.support.v4.app.FragmentManager;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ImageButton;
+import android.widget.LinearLayout;
+import android.widget.TextView;
+
+import com.m2049r.xmrwallet.R;
+import com.m2049r.xmrwallet.dialog.HelpFragment;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class Notice {
+    private static final String PREFS_NAME = "notice";
+    private static List<Notice> notices = null;
+
+    private static final String NOTICE_SHOW_XMRTO_ENABLED_LOGIN = "notice_xmrto_enabled_login";
+    private static final String NOTICE_SHOW_XMRTO_ENABLED_SEND = "notice_xmrto_enabled_send";
+    private static final String NOTICE_SHOW_CRAZYPASS = "notice_crazypass_enabled_login";
+
+    private static void init() {
+        synchronized (Notice.class) {
+            if (notices != null) return;
+            notices = new ArrayList<>();
+            notices.add(
+                    new Notice(NOTICE_SHOW_XMRTO_ENABLED_SEND,
+                            R.string.info_xmrto_enabled,
+                            R.string.help_xmrto,
+                            1)
+            );
+            notices.add(
+                    new Notice(NOTICE_SHOW_XMRTO_ENABLED_LOGIN,
+                            R.string.info_xmrto_enabled,
+                            R.string.help_xmrto,
+                            1)
+            );
+            notices.add(
+                    new Notice(NOTICE_SHOW_CRAZYPASS,
+                            R.string.info_crazypass_enabled,
+                            R.string.help_details,
+                            2)
+            );
+        }
+    }
+
+    public static void showAll(ViewGroup parent, String selector) {
+        if (notices == null) init();
+        for (Notice notice : notices) {
+            if (notice.id.matches(selector))
+                notice.show(parent);
+        }
+    }
+
+    private final String id;
+    private final int textResId;
+    private final int helpResId;
+    private final int defaultCount;
+    private transient int count = -1;
+
+    private Notice(final String id, final int textResId, final int helpResId, final int defaultCount) {
+        this.id = id;
+        this.textResId = textResId;
+        this.helpResId = helpResId;
+        this.defaultCount = defaultCount;
+    }
+
+    // show this notice as a child of the given parent view
+    // NB: it assumes the parent is in a Fragment
+    private void show(final ViewGroup parent) {
+        final Context context = parent.getContext();
+        if (getCount(context) <= 0) return; // don't add it
+
+        final LinearLayout ll =
+                (LinearLayout) LayoutInflater.from(context)
+                        .inflate(R.layout.template_notice, parent, false);
+
+        ((TextView) ll.findViewById(R.id.tvNotice)).setText(textResId);
+
+        final FragmentManager fragmentManager =
+                ((FragmentActivity) context).getSupportFragmentManager();
+        ll.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                HelpFragment.display(fragmentManager, helpResId);
+            }
+        });
+
+        ImageButton ib = (ImageButton) ll.findViewById(R.id.ibClose);
+        ib.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                ll.setVisibility(View.GONE);
+                decCount(context);
+            }
+        });
+        parent.addView(ll);
+    }
+
+    private int getCount(final Context context) {
+        count = context.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE)
+                .getInt(id, defaultCount);
+        return count;
+    }
+
+    private void decCount(final Context context) {
+        final SharedPreferences prefs = context.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
+        if (count < 0) // not initialized yet
+            count = prefs.getInt(id, defaultCount);
+        if (count > 0)
+            prefs.edit().putInt(id, count - 1).apply();
+    }
+}