correct translation

fingerprint strings translated to spanish

.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 91
-        versionName "1.4.3 'Monero Spedner'"
+        versionName "1.5.1 'CrAzY 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.cpp

@@ -695,6 +695,23 @@ Java_com_m2049r_xmrwallet_model_Wallet_isSynchronized(JNIEnv *env, jobject insta
     return static_cast<jboolean>(wallet->synchronized());
 }
 
+//void cn_slow_hash(const void *data, size_t length, char *hash); // from crypto/hash-ops.h
+JNIEXPORT jbyteArray JNICALL
+Java_com_m2049r_xmrwallet_util_KeyStoreHelper_cnSlowHash(JNIEnv *env, jobject clazz,
+                                               jbyteArray data) {
+
+    jbyte *buffer = env->GetByteArrayElements(data, NULL);
+    jsize size = env->GetArrayLength(data);
+    char hash[HASH_SIZE];
+    cn_slow_hash(buffer, (size_t) size, hash);
+
+    env->ReleaseByteArrayElements(data, buffer, JNI_ABORT); // do not update java byte[]
+
+    jbyteArray result = env->NewByteArray(HASH_SIZE);
+    env->SetByteArrayRegion(result, 0, HASH_SIZE, (jbyte *) hash);
+    return result;
+}
+
 JNIEXPORT jstring JNICALL
 Java_com_m2049r_xmrwallet_model_Wallet_getDisplayAmount(JNIEnv *env, jobject clazz,
                                                         jlong amount) {
@@ -1075,6 +1092,85 @@ Java_com_m2049r_xmrwallet_model_PendingTransaction_getTxCount(JNIEnv *env, jobje
 }
 
 
+// these are all in Bitmonero::Wallet - which I find wrong, so they are here!
+//static void init(const char *argv0, const char *default_log_base_name);
+//static void debug(const std::string &category, const std::string &str);
+//static void info(const std::string &category, const std::string &str);
+//static void warning(const std::string &category, const std::string &str);
+//static void error(const std::string &category, const std::string &str);
+JNIEXPORT void JNICALL
+Java_com_m2049r_xmrwallet_model_WalletManager_initLogger(JNIEnv *env, jobject instance,
+                                                         jstring argv0,
+                                                         jstring default_log_base_name) {
+
+    const char *_argv0 = env->GetStringUTFChars(argv0, NULL);
+    const char *_default_log_base_name = env->GetStringUTFChars(default_log_base_name, NULL);
+
+    Bitmonero::Wallet::init(_argv0, _default_log_base_name);
+
+    env->ReleaseStringUTFChars(argv0, _argv0);
+    env->ReleaseStringUTFChars(default_log_base_name, _default_log_base_name);
+}
+
+JNIEXPORT void JNICALL
+Java_com_m2049r_xmrwallet_model_WalletManager_logDebug(JNIEnv *env, jobject instance,
+                                                       jstring category, jstring message) {
+
+    const char *_category = env->GetStringUTFChars(category, NULL);
+    const char *_message = env->GetStringUTFChars(message, NULL);
+
+    Bitmonero::Wallet::debug(_category, _message);
+
+    env->ReleaseStringUTFChars(category, _category);
+    env->ReleaseStringUTFChars(message, _message);
+}
+
+JNIEXPORT void JNICALL
+Java_com_m2049r_xmrwallet_model_WalletManager_logInfo(JNIEnv *env, jobject instance,
+                                                      jstring category, jstring message) {
+
+    const char *_category = env->GetStringUTFChars(category, NULL);
+    const char *_message = env->GetStringUTFChars(message, NULL);
+
+    Bitmonero::Wallet::info(_category, _message);
+
+    env->ReleaseStringUTFChars(category, _category);
+    env->ReleaseStringUTFChars(message, _message);
+}
+
+JNIEXPORT void JNICALL
+Java_com_m2049r_xmrwallet_model_WalletManager_logWarning(JNIEnv *env, jobject instance,
+                                                         jstring category, jstring message) {
+
+    const char *_category = env->GetStringUTFChars(category, NULL);
+    const char *_message = env->GetStringUTFChars(message, NULL);
+
+    Bitmonero::Wallet::warning(_category, _message);
+
+    env->ReleaseStringUTFChars(category, _category);
+    env->ReleaseStringUTFChars(message, _message);
+}
+
+JNIEXPORT void JNICALL
+Java_com_m2049r_xmrwallet_model_WalletManager_logError(JNIEnv *env, jobject instance,
+                                                       jstring category, jstring message) {
+
+    const char *_category = env->GetStringUTFChars(category, NULL);
+    const char *_message = env->GetStringUTFChars(message, NULL);
+
+    Bitmonero::Wallet::error(_category, _message);
+
+    env->ReleaseStringUTFChars(category, _category);
+    env->ReleaseStringUTFChars(message, _message);
+}
+
+JNIEXPORT void JNICALL
+Java_com_m2049r_xmrwallet_model_WalletManager_setLogLevel(JNIEnv *env, jobject instance,
+                                                          jint level) {
+    Bitmonero::WalletManagerFactory::setLogLevel(level);
+}
+
+
 #ifdef __cplusplus
 }
 #endif

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 +43,27 @@ 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);
+
+#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

@@ -18,12 +18,15 @@ package com.m2049r.xmrwallet;
 
 import android.content.Context;
 import android.content.SharedPreferences;
+import android.content.res.ColorStateList;
 import android.os.Bundle;
 import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
 import android.support.design.widget.FloatingActionButton;
 import android.support.v4.app.Fragment;
+import android.support.v4.content.ContextCompat;
 import android.support.v7.widget.RecyclerView;
+import android.view.Gravity;
 import android.view.KeyEvent;
 import android.view.LayoutInflater;
 import android.view.Menu;
@@ -38,7 +41,9 @@ import android.widget.AdapterView;
 import android.widget.ArrayAdapter;
 import android.widget.EditText;
 import android.widget.FrameLayout;
+import android.widget.ImageButton;
 import android.widget.ImageView;
+import android.widget.LinearLayout;
 import android.widget.RelativeLayout;
 import android.widget.TextView;
 import android.widget.Toast;
@@ -48,13 +53,16 @@ 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 +79,6 @@ 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 +178,8 @@ 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 +227,6 @@ public class LoginFragment extends Fragment implements WalletInfoAdapter.OnInter
         });
 
         loadPrefs();
-        if (!showXmrtoEnabled) {
-            llXmrToEnabled.setVisibility(View.GONE);
-        }
 
         return view;
     }
@@ -326,6 +313,17 @@ 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) {
@@ -379,7 +377,6 @@ public class LoginFragment extends Fragment implements WalletInfoAdapter.OnInter
 
     private static final String PREF_DAEMON_TESTNET = "daemon_testnet";
     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";
@@ -390,23 +387,12 @@ public class LoginFragment extends Fragment implements WalletInfoAdapter.OnInter
     private NodeList daemonTestNet;
     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));
         setNet(testnetCheckMenu, 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() {
@@ -428,7 +414,6 @@ public class LoginFragment extends Fragment implements WalletInfoAdapter.OnInter
         SharedPreferences.Editor editor = sharedPref.edit();
         editor.putString(PREF_DAEMON_MAINNET, daemonMainNet.toString());
         editor.putString(PREF_DAEMON_TESTNET, daemonTestNet.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/WalletActivity.java

@@ -49,8 +49,6 @@ import com.m2049r.xmrwallet.util.Helper;
 import com.m2049r.xmrwallet.util.UserNotes;
 import com.m2049r.xmrwallet.widget.Toolbar;
 
-import java.io.File;
-
 import timber.log.Timber;
 
 public class WalletActivity extends SecureActivity implements WalletFragment.Listener,
@@ -62,8 +60,10 @@ public class WalletActivity extends SecureActivity implements WalletFragment.Lis
 
     public static final String REQUEST_ID = "id";
     public static final String REQUEST_PW = "pw";
+    public static final String REQUEST_FINGERPRINT_USED = "fingerprint";
 
     private Toolbar toolbar;
+    private boolean needVerifyIdentity;
 
     @Override
     public void setToolbarButton(int type) {
@@ -120,6 +120,7 @@ public class WalletActivity extends SecureActivity implements WalletFragment.Lis
             acquireWakeLock();
             String walletId = extras.getString(REQUEST_ID);
             String walletPassword = extras.getString(REQUEST_PW);
+            needVerifyIdentity = extras.getBoolean(REQUEST_FINGERPRINT_USED);
             connectWalletService(walletId, walletPassword);
         } else {
             finish();
@@ -174,6 +175,9 @@ public class WalletActivity extends SecureActivity implements WalletFragment.Lis
             case R.id.action_details_help:
                 HelpFragment.display(getSupportFragmentManager(), R.string.help_details);
                 return true;
+            case R.id.action_details_changepw:
+                onWalletChangePassword();
+                return true;
             case R.id.action_help_send:
                 HelpFragment.display(getSupportFragmentManager(), R.string.help_send);
                 return true;
@@ -182,6 +186,20 @@ public class WalletActivity extends SecureActivity implements WalletFragment.Lis
         }
     }
 
+    public void onWalletChangePassword() {//final String walletName, final String walletPassword) {
+        try {
+            GenerateReviewFragment detailsFragment = (GenerateReviewFragment)
+                    getSupportFragmentManager().findFragmentById(R.id.fragment_container);
+            AlertDialog dialog = detailsFragment.createChangePasswordDialog();
+            if (dialog != null) {
+                Helper.showKeyboard(dialog);
+                dialog.show();
+            }
+        } catch (ClassCastException ex) {
+            Timber.w("onWalletChangePassword() called, but no GenerateReviewFragment active");
+        }
+    }
+
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         Timber.d("onCreate()");
@@ -222,6 +240,8 @@ public class WalletActivity extends SecureActivity implements WalletFragment.Lis
             }
         });
 
+        showNet();
+
         Fragment walletFragment = new WalletFragment();
         getSupportFragmentManager().beginTransaction()
                 .add(R.id.fragment_container, walletFragment, WalletFragment.class.getName()).commit();
@@ -378,7 +398,17 @@ public class WalletActivity extends SecureActivity implements WalletFragment.Lis
 
     @Override
     public void onSendRequest() {
-        replaceFragment(new SendFragment(), null, null);
+        if (needVerifyIdentity) {
+            Helper.promptPassword(WalletActivity.this, getWallet().getName(), true, new Helper.PasswordAction() {
+                @Override
+                public void action(String walletName, String password, boolean fingerprintUsed) {
+                    replaceFragment(new SendFragment(), null, null);
+                    needVerifyIdentity = false;
+                }
+            });
+        } else {
+            replaceFragment(new SendFragment(), null, null);
+        }
     }
 
     @Override
@@ -678,9 +708,22 @@ public class WalletActivity extends SecureActivity implements WalletFragment.Lis
             public void onClick(DialogInterface dialog, int which) {
                 switch (which) {
                     case DialogInterface.BUTTON_POSITIVE:
-                        Bundle extras = new Bundle();
+                        final Bundle extras = new Bundle();
                         extras.putString("type", GenerateReviewFragment.VIEW_TYPE_WALLET);
-                        replaceFragment(new GenerateReviewFragment(), null, extras);
+                        extras.putString("password", getIntent().getExtras().getString(REQUEST_PW));
+
+                        if (needVerifyIdentity) {
+                            Helper.promptPassword(WalletActivity.this, getWallet().getName(), true, new Helper.PasswordAction() {
+                                @Override
+                                public void action(String walletName, String password, boolean fingerprintUsed) {
+                                    replaceFragment(new GenerateReviewFragment(), null, extras);
+                                    needVerifyIdentity = false;
+                                }
+                            });
+                        } else {
+                            replaceFragment(new GenerateReviewFragment(), null, extras);
+                        }
+
                         break;
                     case DialogInterface.BUTTON_NEGATIVE:
                         // do nothing
@@ -808,9 +851,8 @@ public class WalletActivity extends SecureActivity implements WalletFragment.Lis
 
     @Override
     public boolean verifyWalletPassword(String password) {
-        String walletPath = new File(Helper.getWalletRoot(this),
+        String walletPassword = Helper.getWalletPassword(getApplicationContext(), getWalletName(), password);
-                getWalletName() + ".keys").getAbsolutePath();
+        return walletPassword != null;
-        return WalletManager.getInstance().verifyWalletPassword(walletPath, password, true);
     }
 
     @Override

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

@@ -352,7 +352,7 @@ 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 {

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/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/model/Wallet.java

@@ -275,5 +275,4 @@ 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;
 
-
 }

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;
     }
 
@@ -215,7 +216,7 @@ 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);
@@ -269,5 +270,23 @@ 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/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 +1,40 @@
+package com.m2049r.xmrwallet.util;
+
+import android.app.KeyguardManager;
+import android.content.Context;
+import android.support.v4.hardware.fingerprint.FingerprintManagerCompat;
+import android.support.v4.os.CancellationSignal;
+
+import java.security.KeyStore;
+import java.security.KeyStoreException;
+
+public class FingerprintHelper {
+
+    public static boolean isDeviceSupported(Context context) {
+        FingerprintManagerCompat fingerprintManager = FingerprintManagerCompat.from(context);
+        KeyguardManager keyguardManager = (KeyguardManager) context.getSystemService(Context.KEYGUARD_SERVICE);
+
+        return keyguardManager != null &&
+                keyguardManager.isKeyguardSecure() &&
+                fingerprintManager.isHardwareDetected() &&
+                fingerprintManager.hasEnrolledFingerprints();
+    }
+
+    public static boolean isFingerprintAuthAllowed(String wallet) throws KeyStoreException {
+        KeyStore keyStore = KeyStore.getInstance(KeyStoreHelper.SecurityConstants.KEYSTORE_PROVIDER_ANDROID_KEYSTORE);
+        try {
+            keyStore.load(null);
+        } catch (Exception ex) {
+            throw new IllegalStateException("Could not load KeyStore", ex);
+        }
+
+        return keyStore.containsAlias(KeyStoreHelper.SecurityConstants.WALLET_PASS_KEY_PREFIX + wallet);
+    }
+
+    public static void authenticate(Context context, CancellationSignal cancelSignal,
+                                    FingerprintManagerCompat.AuthenticationCallback callback) {
+        FingerprintManagerCompat manager = FingerprintManagerCompat.from(context);
+        manager.authenticate(null, 0, cancelSignal, 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();
+    }
+}

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

@@ -87,6 +87,8 @@ public class RestoreHeight {
         blockheight.put("2017-12-01", 1454639L);
         blockheight.put("2018-01-01", 1477201L);
         blockheight.put("2018-02-01", 1499599L);
+        blockheight.put("2018-03-01", 1519796L);
+        blockheight.put("2018-04-01", 1542067L);
     }
 
     public long getHeight(String date) {

app/src/main/res/drawable/backgound_amount.xml

@@ -1,10 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<shape xmlns:android="http://schemas.android.com/apk/res/android"
-    android:shape="rectangle">
-    <solid android:color="@color/white" />
-    <padding
-        android:bottom="8dp"
-        android:left="8dp"
-        android:right="8dp"
-        android:top="8dp" />
-</shape>

app/src/main/res/drawable/backgound_scan.xml

@@ -1,15 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<shape xmlns:android="http://schemas.android.com/apk/res/android"
-    android:shape="rectangle">
-    <padding
-        android:bottom="8dp"
-        android:left="8dp"
-        android:right="8dp"
-        android:top="8dp" />
-    <corners android:radius="3dp" />
-    <stroke
-        android:width="2dp"
-        android:color="@color/gradientOrange"
-        android:dashGap="16dp"
-        android:dashWidth="16dp" />
-</shape>

app/src/main/res/drawable/ic_add_black_24dp.xml

@@ -1,9 +0,0 @@
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-        android:width="24dp"
-        android:height="24dp"
-        android:viewportWidth="24.0"
-        android:viewportHeight="24.0">
-    <path
-        android:fillColor="#FF000000"
-        android:pathData="M19,13h-6v6h-2v-6H5v-2h6V5h2v6h6v2z"/>
-</vector>

app/src/main/res/drawable/ic_arrow_right_orange_24dp.xml

@@ -1,9 +0,0 @@
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:width="24dp"
-    android:height="24dp"
-    android:viewportHeight="24.0"
-    android:viewportWidth="24.0">
-    <path
-        android:fillColor="@color/gradientOrange"
-        android:pathData="M8.59,16.34l4.58,-4.59 -4.58,-4.59L10,5.75l6,6 -6,6z" />
-</vector>

app/src/main/res/drawable/ic_favorite_white_14dp.xml

@@ -1,9 +0,0 @@
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:width="14dp"
-    android:height="14dp"
-    android:viewportHeight="24.0"
-    android:viewportWidth="24.0">
-    <path
-        android:fillColor="#FFffffff"
-        android:pathData="M12,21.35l-1.45,-1.32C5.4,15.36 2,12.28 2,8.5 2,5.42 4.42,3 7.5,3c1.74,0 3.41,0.81 4.5,2.09C13.09,3.81 14.76,3 16.5,3 19.58,3 22,5.42 22,8.5c0,3.78 -3.4,6.86 -8.55,11.54L12,21.35z" />
-</vector>

app/src/main/res/drawable/ic_max_sweep.xml

@@ -1,9 +0,0 @@
-<vector android:height="24dp" android:viewportHeight="25.0"
-    android:viewportWidth="25.0" android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
-    <path android:fillColor="#FF6105" android:fillType="evenOdd"
-        android:pathData="M3,0L22,0A3,3 0,0 1,25 3L25,22A3,3 0,0 1,22 25L3,25A3,3 0,0 1,0 22L0,3A3,3 0,0 1,3 0z"
-        android:strokeColor="#00000000" android:strokeWidth="1"/>
-    <path android:fillColor="#FFFFFF" android:fillType="evenOdd"
-        android:pathData="M13.556,13.214L13.556,5L11.968,5L11.968,13.214L9.111,10L8,11.25L12.762,16.607L17.524,11.25L16.413,10L13.556,13.214ZM17.524,17.5L8,17.5L8,19.286L17.524,19.286L17.524,17.5L17.524,17.5Z"
-        android:strokeColor="#00000000" android:strokeWidth="1"/>
-</vector>

app/src/main/res/drawable/ic_monero_32dp.xml

@@ -1,14 +0,0 @@
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:width="32dp"
-    android:height="32dp"
-    android:viewportHeight="75.0"
-    android:viewportWidth="75.0">
-
-    <path
-        android:fillColor="#ff6600"
-        android:pathData="M 37.3,0.35329395 c -20.377,0 -36.903,16.524 -36.903,36.902 0,4.074 0.66,7.992 1.88,11.657 l 11.036,0 0,-31.049 23.987,23.987 23.987,-23.987 0,31.049 11.037,0 c 1.22,-3.665 1.88,-7.583 1.88,-11.657 0,-20.378 -16.526,-36.902 -36.904,-36.902" />
-    <path
-        android:fillColor="#4c4c4c"
-        android:pathData="M 21.3164,36.895994 l 0,19.537 -15.55,0 c 6.478,10.628 18.178,17.726 31.533,17.726 13.355,0 25.056,-7.098 31.533,-17.726 l -15.549,0 0,-19.537 -15.984,15.984 z" />
-
-</vector>

app/src/main/res/drawable/ic_monero_qr.xml

@@ -1,21 +0,0 @@
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:width="100dp"
-    android:height="100dp"
-    android:viewportHeight="75.0"
-    android:viewportWidth="75.0">
-
-    <path
-        android:fillColor="#ffffff"
-        android:pathData=" M 37.3, 37.3
-        m -36.9, 0
-        a 36.9,36.9 0 1,0 73.8,0
-        a 36.9,36.9 0 1,0 -73.8,0" />
-
-    <path
-        android:fillColor="#ff6600"
-        android:pathData="M 37.3,0.35329395 c -20.377,0 -36.903,16.524 -36.903,36.902 0,4.074 0.66,7.992 1.88,11.657 l 11.036,0 0,-31.049 23.987,23.987 23.987,-23.987 0,31.049 11.037,0 c 1.22,-3.665 1.88,-7.583 1.88,-11.657 0,-20.378 -16.526,-36.902 -36.904,-36.902" />
-    <path
-        android:fillColor="#4c4c4c"
-        android:pathData="M 21.3164,36.895994 l 0,19.537 -15.55,0 c 6.478,10.628 18.178,17.726 31.533,17.726 13.355,0 25.056,-7.098 31.533,-17.726 l -15.549,0 0,-19.537 -15.984,15.984 z" />
-
-</vector>