Option to remember and reuse selected fiat (#967)

* show error instead of crashing

* ignore if fragement is no longer

* bump version

.circleci/config.yml

@@ -3,13 +3,11 @@ jobs:
   build:
     working_directory: ~/code
     docker:
-      - image: circleci/android:api-28-ndk
+      - image: cimg/android:2023.12-ndk
     environment:
       JVM_OPTS: -Xmx3200m
     steps:
       - checkout
-      - run: yes | sdkmanager --licenses || exit 0
-      - run: yes | sdkmanager --update || exit 0
       - restore_cache:
           key: jars-{{ checksum "build.gradle" }}-{{ checksum  "app/build.gradle" }}
       - run:

.gitignore

@@ -8,11 +8,9 @@
 .DS_Store
 /app/build
 /app/release
-/app/alpha
-/app/prod
-/app/alphaMainnet
-/app/prodMainnet
-/app/alphaStagenet
-/app/prodStagenet
+/app/alpha*
+/app/prod*
 /app/.cxx
 /monerujo.id
+/external-libs/VERSION
+/external-libs/include/wallet2_api.h

app/CMakeLists.txt

@@ -1,4 +1,5 @@
 cmake_minimum_required(VERSION 3.4.1)
+project(monerujo)
 message(STATUS ABI_INFO  = ${ANDROID_ABI})
 
 add_library( monerujo
@@ -121,7 +122,7 @@ set_target_properties(easylogging PROPERTIES IMPORTED_LOCATION
 
 add_library(unbound STATIC IMPORTED)
 set_target_properties(unbound PROPERTIES IMPORTED_LOCATION
-    ${EXTERNAL_LIBS_DIR}/${ANDROID_ABI}/monero/libunbound.a)
+    ${EXTERNAL_LIBS_DIR}/${ANDROID_ABI}/libunbound.a)
 
 add_library(epee STATIC IMPORTED)
 set_target_properties(epee PROPERTIES IMPORTED_LOCATION
@@ -171,6 +172,10 @@ add_library(wallet-crypto STATIC IMPORTED)
 set_target_properties(wallet-crypto PROPERTIES IMPORTED_LOCATION
         ${EXTERNAL_LIBS_DIR}/${ANDROID_ABI}/monero/libwallet-crypto.a)
 
+add_library(cryptonote_format_utils_basic STATIC IMPORTED)
+set_target_properties(cryptonote_format_utils_basic PROPERTIES IMPORTED_LOCATION
+        ${EXTERNAL_LIBS_DIR}/${ANDROID_ABI}/monero/libcryptonote_format_utils_basic.a)
+
 #############
 # System
 #############
@@ -193,6 +198,7 @@ target_link_libraries(  monerujo
                         wallet
                         cryptonote_core
                         cryptonote_basic
+                        cryptonote_format_utils_basic
                         mnemonics
                         ringct
                         ringct_basic

app/build.gradle

@@ -1,15 +1,15 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 30
-    buildToolsVersion '29.0.3'
     ndkVersion '17.2.4988734'
     defaultConfig {
         applicationId "com.m2049r.xmrwallet"
+        buildToolsVersion = '35.0.0'
+        compileSdk 35
         minSdkVersion 21
-        targetSdkVersion 30
-        versionCode 1005
-        versionName "2.0.5 'Puginarug'"
+        targetSdkVersion 35
+        versionCode 4105
+        versionName "4.1.5 'Exolix'"
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
         externalNativeBuild {
             cmake {
@@ -24,7 +24,7 @@ android {
         }
     }
 
-    flavorDimensions 'type', 'net'
+    flavorDimensions = ['type', 'net']
     productFlavors {
         mainnet {
             dimension 'net'
@@ -58,7 +58,7 @@ android {
             applicationIdSuffix ".debug"
         }
         applicationVariants.all { variant ->
-            variant.buildConfigField "String", "ID_A", "\"" + getId("ID_A") + "\""
+            variant.buildConfigField "String", "ID_F", "\"" + getId("ID_F") + "\""
         }
     }
 
@@ -72,7 +72,7 @@ android {
         abi {
             enable true
             reset()
-            include 'armeabi-v7a', 'arm64-v8a', 'x86', 'x86_64'
+            include 'armeabi-v7a', 'arm64-v8a', 'x86_64'
             universalApk true
         }
     }
@@ -111,44 +111,61 @@ android {
         sourceCompatibility JavaVersion.VERSION_1_8
         targetCompatibility JavaVersion.VERSION_1_8
     }
+    namespace 'com.m2049r.xmrwallet'
+    buildFeatures {
+        buildConfig true
+    }
+
+    testOptions {
+        unitTests {
+            all {
+                jvmArgs '--add-opens=java.base/java.lang=ALL-UNNAMED'
+            }
+        }
+    }
 }
 
-def getId(name) {
-    def Properties props = new Properties()
+static def getId(name) {
+    Properties props = new Properties()
     props.load(new FileInputStream(new File('monerujo.id')))
     return props[name]
 }
 
 dependencies {
-    implementation 'androidx.core:core:1.3.2'
-    implementation 'androidx.appcompat:appcompat:1.2.0'
-    implementation 'com.google.android.material:material:1.3.0'
+    implementation(platform("org.jetbrains.kotlin:kotlin-bom:1.8.22"))
+
+    implementation 'androidx.core:core:1.13.1'
+    implementation 'androidx.appcompat:appcompat:1.7.0'
     implementation 'androidx.legacy:legacy-support-v4:1.0.0'
-    implementation 'androidx.recyclerview:recyclerview:1.2.0'
+    implementation 'androidx.recyclerview:recyclerview:1.3.2'
     implementation 'androidx.cardview:cardview:1.0.0'
-    implementation 'androidx.swiperefreshlayout:swiperefreshlayout:1.2.0-alpha01'
-    implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
+    implementation 'androidx.swiperefreshlayout:swiperefreshlayout:1.1.0'
+    implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
+    implementation 'androidx.preference:preference:1.2.1'
+
+    implementation 'com.google.android.material:material:1.12.0'
 
     implementation 'me.dm7.barcodescanner:zxing:1.9.8'
-    implementation "com.squareup.okhttp3:okhttp:4.9.0"
-    implementation "io.github.rburgst:okhttp-digest:2.5"
-    implementation "com.jakewharton.timber:timber:4.7.1"
+    implementation "com.squareup.okhttp3:okhttp:4.12.0"
+    implementation "io.github.rburgst:okhttp-digest:3.1.0"
+    implementation "com.jakewharton.timber:timber:5.0.1"
 
-    implementation 'com.nulab-inc:zxcvbn:1.3.0'
+    implementation 'info.guardianproject.netcipher:netcipher:2.1.0'
+    //implementation 'info.guardianproject.netcipher:netcipher-okhttp3:2.1.0'
+    implementation fileTree(dir: 'libs/classes', include: ['*.jar'])
+    implementation 'com.nulab-inc:zxcvbn:1.8.2'
 
-    implementation 'dnsjava:dnsjava:2.1.9'
-    implementation 'org.jitsi:dnssecjava:1.2.0'
-    implementation 'org.slf4j:slf4j-nop:1.7.30'
+    implementation 'dnsjava:dnsjava:3.5.3'
+    implementation 'org.slf4j:slf4j-nop:2.0.11'
     implementation 'com.github.brnunes:swipeablerecyclerview:1.0.2'
 
-    implementation 'com.github.aelstad:keccakj:1.1.0'
+    //noinspection GradleDependency
+    testImplementation "junit:junit:4.13.2"
+    testImplementation "org.mockito:mockito-all:1.10.19"
+    testImplementation "com.squareup.okhttp3:mockwebserver:4.12.0"
+    testImplementation 'org.json:json:20231013'
+    testImplementation 'net.jodah:concurrentunit:0.4.6'
 
-    testImplementation "junit:junit:$rootProject.ext.junitVersion"
-    testImplementation "org.mockito:mockito-all:$rootProject.ext.mockitoVersion"
-    testImplementation "com.squareup.okhttp3:mockwebserver:4.9.0"
-    testImplementation 'org.json:json:20180813'
-    testImplementation 'net.jodah:concurrentunit:0.4.4'
-
-    compileOnly 'org.projectlombok:lombok:1.18.16'
-    annotationProcessor 'org.projectlombok:lombok:1.18.16'
+    compileOnly 'org.projectlombok:lombok:1.18.30'
+    annotationProcessor 'org.projectlombok:lombok:1.18.30'
 }

app/src/main/AndroidManifest.xml

@@ -1,31 +1,59 @@
 <?xml version="1.0" encoding="utf-8"?>
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="com.m2049r.xmrwallet">
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
 
+    <uses-feature
+        android:name="android.hardware.camera"
+        android:required="false" />
+
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+    <uses-permission android:name="android.permission.BLUETOOTH" />
+    <uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
+    <uses-permission android:name="android.permission.BLUETOOTH_CONNECT" />
+    <uses-permission android:name="android.permission.BLUETOOTH_SCAN" />
     <uses-permission android:name="android.permission.INTERNET" />
     <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
+    <uses-permission android:name="android.permission.USE_FINGERPRINT" />
     <uses-permission android:name="android.permission.WAKE_LOCK" />
     <uses-permission android:name="android.permission.CAMERA" />
     <uses-permission android:name="android.permission.USE_BIOMETRIC" />
-    <uses-permission android:name="android.permission.NFC" />
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE_SPECIAL_USE" />
+
+    <queries>
+        <intent>
+            <action android:name="org.torproject.android.intent.action.START" />
+        </intent>
+        <intent>
+            <action android:name="org.torproject.android.intent.action.STATUS" />
+        </intent>
+        <intent>
+            <action android:name="org.torproject.android.REQUEST_HS_PORT" />
+        </intent>
+        <intent>
+            <action android:name="org.torproject.android.REQUEST_V3_ONION_SERVICE" />
+        </intent>
+
+        <package android:name="org.torproject.android" />
+    </queries>
 
     <application
-        android:preserveLegacyExternalStorage="true"
         android:name=".XmrWalletApplication"
         android:allowBackup="false"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
+        android:preserveLegacyExternalStorage="true"
         android:supportsRtl="true"
-        android:theme="@style/MyMaterialTheme"
+        android:theme="@style/MyMaterialThemeClassic"
         android:usesCleartextTraffic="true">
         <activity
             android:name=".MainActivity"
             android:configChanges="orientation|keyboardHidden|uiMode"
+            android:exported="true"
             android:launchMode="singleTop"
             android:screenOrientation="portrait">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
+
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
@@ -34,27 +62,28 @@
             android:configChanges="orientation|keyboardHidden|uiMode"
             android:label="@string/wallet_activity_name"
             android:launchMode="singleTask"
-            android:screenOrientation="behind"/>
+            android:screenOrientation="behind" />
         <activity
             android:name=".LoginActivity"
-            android:configChanges="orientation|keyboardHidden|uiMode"
+            android:configChanges="orientation|keyboardHidden"
+            android:exported="true"
             android:label="@string/app_name"
             android:launchMode="singleTop"
             android:screenOrientation="locked">
             <intent-filter>
                 <action android:name="android.hardware.usb.action.USB_DEVICE_ATTACHED" />
             </intent-filter>
-
             <intent-filter android:label="@string/app_name">
                 <action android:name="android.intent.action.VIEW" />
+
                 <data android:scheme="monero" />
 
                 <category android:name="android.intent.category.DEFAULT" />
                 <category android:name="android.intent.category.BROWSABLE" />
             </intent-filter>
-
             <intent-filter android:label="@string/app_name">
                 <action android:name="android.intent.action.VIEW" />
+
                 <data android:scheme="bitcoin" />
 
                 <category android:name="android.intent.category.DEFAULT" />
@@ -75,7 +104,12 @@
             android:name=".service.WalletService"
             android:description="@string/service_description"
             android:exported="false"
-            android:label="Monero Wallet Service" />
+            android:foregroundServiceType="specialUse"
+            android:label="Monero Wallet Service">
+            <property
+                android:name="android.app.PROPERTY_SPECIAL_USE_FGS_SUBTYPE"
+                android:value="Keeps app in sync with the blockchain" />
+        </service>
 
         <provider
             android:name="androidx.core.content.FileProvider"
@@ -87,4 +121,5 @@
                 android:resource="@xml/filepaths" />
         </provider>
     </application>
-</manifest>
+
+</manifest>

app/src/main/cpp/monerujo.h

@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2017 m2049r
+ * Copyright (c) 2017-2024 m2049r
  * <p>
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -19,6 +19,8 @@
 
 #include <jni.h>
 
+#include <string>
+
 /*
 #include <android/log.h>
 
@@ -28,6 +30,10 @@
 #define  LOGE(...)  __android_log_print(ANDROID_LOG_ERROR,LOG_TAG,__VA_ARGS__)
 */
 
+void ThrowException(JNIEnv *jenv, const char* type, const char* msg) {
+    jenv->ThrowNew(jenv->FindClass(type), msg);
+}
+
 jfieldID getHandleField(JNIEnv *env, jobject obj, const char *fieldName = "handle") {
     jclass c = env->GetObjectClass(obj);
     return env->GetFieldID(c, fieldName, "J"); // of type long
@@ -35,8 +41,16 @@ jfieldID getHandleField(JNIEnv *env, jobject obj, const char *fieldName = "handl
 
 template<typename T>
 T *getHandle(JNIEnv *env, jobject obj, const char *fieldName = "handle") {
+    return reinterpret_cast<T *>(env->GetLongField(obj, getHandleField(env, obj, fieldName)));
+}
+
+template<typename T>
+void destroyNativeObject(JNIEnv *env, T nativeObjectHandle, jobject obj, const char *fieldName = "handle") {
     jlong handle = env->GetLongField(obj, getHandleField(env, obj, fieldName));
-    return reinterpret_cast<T *>(handle);
+    if (handle != 0) {
+        ThrowException(env, "java/lang/IllegalStateException", "invalid handle (destroy)");
+    }
+    delete reinterpret_cast<T *>(nativeObjectHandle);
 }
 
 void setHandleFromLong(JNIEnv *env, jobject obj, jlong handle) {
@@ -54,7 +68,7 @@ extern "C"
 {
 #endif
 
-extern const char* const MONERO_VERSION; // the actual monero core version
+extern const char *const MONERO_VERSION; // the actual monero core version
 
 // from monero-core crypto/hash-ops.h - avoid #including monero code here
 enum {
@@ -62,18 +76,40 @@ enum {
     HASH_DATA_AREA = 136
 };
 
-void cn_slow_hash(const void *data, size_t length, char *hash, int variant, int prehashed, uint64_t height);
+void cn_slow_hash(const void *data, size_t length, char *hash, int variant, int prehashed,
+                  uint64_t height);
 
 inline void slow_hash(const void *data, const size_t length, char *hash) {
     cn_slow_hash(data, length, hash, 0 /*variant*/, 0 /*prehashed*/, 0 /*height*/);
 }
 
 inline void slow_hash_broken(const void *data, char *hash, int variant) {
-    cn_slow_hash(data, 200 /*sizeof(union hash_state)*/, hash, variant, 1 /*prehashed*/, 0 /*height*/);
+    cn_slow_hash(data, 200 /*sizeof(union hash_state)*/, hash, variant, 1 /*prehashed*/,
+                 0 /*height*/);
 }
-
 #ifdef __cplusplus
 }
 #endif
 
+namespace Monerujo {
+    class SidekickWallet {
+    public:
+        enum Status {
+            Status_Ok,
+            Status_Error,
+            Status_Critical
+        };
+
+        SidekickWallet(uint8_t networkType, std::string a, std::string b);
+
+        ~SidekickWallet();
+
+        std::string call(int commandId, const std::string &request);
+
+        void reset();
+
+        Status status() const;
+
+    };
+}
 #endif //XMRWALLET_WALLET_LIB_H

app/src/main/java/com/btchip/comm/BTChipTransport.java

@@ -20,8 +20,6 @@
 
 package com.btchip.comm;
 
-import com.btchip.BTChipException;
-
 public interface BTChipTransport {
     byte[] exchange(byte[] command);
 

app/src/main/java/com/btchip/comm/android/BTChipTransportAndroidHID.java

@@ -28,7 +28,6 @@ import android.hardware.usb.UsbInterface;
 import android.hardware.usb.UsbManager;
 import android.hardware.usb.UsbRequest;
 
-import com.btchip.BTChipException;
 import com.btchip.comm.BTChipTransport;
 import com.btchip.comm.LedgerHelper;
 import com.btchip.utils.Dump;
@@ -78,7 +77,7 @@ public class BTChipTransportAndroidHID implements BTChipTransport {
     }
 
     private static final int VID = 0x2C97;
-    private static final int[] PID_HIDS = {0x0001, 0x0004};
+    private static final int[] PID_HIDS = {0x0001, 0x0004, 0x0005};
 
     private UsbDeviceConnection connection;
     private UsbInterface dongleInterface;

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

@@ -77,7 +77,7 @@ public class Dispatcher implements PeerRetriever.OnGetPeers {
                     final NodeInfo nodeInfo = retrievedPeer.getNodeInfo();
                     Timber.d("Retrieved %s", nodeInfo);
                     if ((nodeInfo.isValid() || nodeInfo.isFavourite())) {
-                        nodeInfo.setName();
+                        nodeInfo.setDefaultName();
                         rpcNodes.add(nodeInfo);
                         Timber.d("RPC: %s", nodeInfo);
                         // the following is not totally correct but it works (otherwise we need to

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

@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2024 m2049r
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.m2049r.xmrwallet;
+
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.FrameLayout;
+
+import androidx.annotation.NonNull;
+import androidx.fragment.app.Fragment;
+
+import timber.log.Timber;
+
+public class LockFragment extends Fragment {
+    @Override
+    public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        Timber.d("onCreateView");
+        final FrameLayout frame = new FrameLayout(requireContext());
+        frame.setLayoutParams(new FrameLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT));
+        return frame;
+    }
+}

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

@@ -20,7 +20,6 @@ import android.content.Intent;
 import android.os.Bundle;
 
 import androidx.annotation.Nullable;
-import androidx.appcompat.app.AppCompatActivity;
 
 import com.m2049r.xmrwallet.onboarding.OnBoardingActivity;
 import com.m2049r.xmrwallet.onboarding.OnBoardingManager;

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

@@ -20,7 +20,6 @@ import android.content.Context;
 import android.content.DialogInterface;
 import android.os.AsyncTask;
 import android.os.Bundle;
-import android.view.KeyEvent;
 import android.view.LayoutInflater;
 import android.view.Menu;
 import android.view.MenuInflater;
@@ -32,6 +31,8 @@ import android.widget.Button;
 import android.widget.TextView;
 import android.widget.Toast;
 
+import androidx.activity.OnBackPressedCallback;
+import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.appcompat.app.AlertDialog;
 import androidx.fragment.app.Fragment;
@@ -59,7 +60,6 @@ import java.text.NumberFormat;
 import java.util.Collection;
 import java.util.HashSet;
 import java.util.Iterator;
-import java.util.Objects;
 import java.util.Set;
 
 import timber.log.Timber;
@@ -69,7 +69,7 @@ public class NodeFragment extends Fragment
 
     static private int NODES_TO_FIND = 10;
 
-    static private NumberFormat FORMATTER = NumberFormat.getInstance();
+    static private final NumberFormat FORMATTER = NumberFormat.getInstance();
 
     private SwipeRefreshLayout pullToRefresh;
     private TextView tvPull;
@@ -105,7 +105,7 @@ public class NodeFragment extends Fragment
     }
 
     @Override
-    public void onAttach(Context context) {
+    public void onAttach(@NonNull Context context) {
         super.onAttach(context);
         if (context instanceof Listener) {
             this.activityCallback = (Listener) context;
@@ -147,6 +147,13 @@ public class NodeFragment extends Fragment
         }
     }
 
+    private final OnBackPressedCallback onBackPressedCallback = new OnBackPressedCallback(false) {
+        @Override
+        public void handleOnBackPressed() {
+            Toast.makeText(requireActivity(), getString(R.string.node_refresh_wait), Toast.LENGTH_LONG).show();
+        }
+    };
+
     @Override
     public View onCreateView(LayoutInflater inflater, ViewGroup container,
                              Bundle savedInstanceState) {
@@ -189,6 +196,7 @@ public class NodeFragment extends Fragment
 
     private boolean refresh(int type) {
         if (asyncFindNodes != null) return false; // ignore refresh request as one is ongoing
+        onBackPressedCallback.setEnabled(true);
         asyncFindNodes = new AsyncFindNodes();
         updateRefreshElements();
         asyncFindNodes.execute(type);
@@ -199,10 +207,11 @@ public class NodeFragment extends Fragment
     public void onCreate(@Nullable Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setHasOptionsMenu(true);
+        requireActivity().getOnBackPressedDispatcher().addCallback(this, onBackPressedCallback);
     }
 
     @Override
-    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
+    public void onCreateOptionsMenu(@NonNull Menu menu, MenuInflater inflater) {
         inflater.inflate(R.menu.node_menu, menu);
         super.onCreateOptionsMenu(menu, inflater);
     }
@@ -219,8 +228,8 @@ public class NodeFragment extends Fragment
             activityCallback.setNode(nodeItem); // this marks it as selected & saves it as well
             nodeItem.setSelecting(false);
             try {
-                Objects.requireNonNull(getActivity()).runOnUiThread(() -> nodesAdapter.allowClick(true));
-            } catch (NullPointerException ex) {
+                requireActivity().runOnUiThread(() -> nodesAdapter.allowClick(true));
+            } catch (IllegalStateException ex) {
                 // it's ok
             }
         });
@@ -281,8 +290,7 @@ public class NodeFragment extends Fragment
             } else if (params[0] == SCAN) {
                 // otherwise scan the network
                 Timber.d("scanning");
-                Set<NodeInfo> seedList = new HashSet<>();
-                seedList.addAll(nodeList);
+                Set<NodeInfo> seedList = new HashSet<>(nodeList);
                 nodeList.clear();
                 Timber.d("seed %d", seedList.size());
                 Dispatcher d = new Dispatcher(info -> publishProgress(info));
@@ -344,6 +352,7 @@ public class NodeFragment extends Fragment
 
         private void complete() {
             asyncFindNodes = null;
+            onBackPressedCallback.setEnabled(false);
             if (!isAdded()) return;
             //if (isCancelled()) return;
             tvPull.setText(getString(R.string.node_pull_hint));
@@ -403,16 +412,12 @@ public class NodeFragment extends Fragment
                 etNodeHost.setError(getString(R.string.node_host_empty));
                 return false;
             }
-            final boolean setHostSuccess = Helper.runWithNetwork(new Helper.Action() {
-                @Override
-                public boolean run() {
-                    try {
-                        nodeInfo.setHost(host);
-                        return true;
-                    } catch (UnknownHostException ex) {
-                        etNodeHost.setError(getString(R.string.node_host_unresolved));
-                        return false;
-                    }
+            final boolean setHostSuccess = Helper.runWithNetwork(() -> {
+                try {
+                    nodeInfo.setHost(host);
+                    return true;
+                } catch (UnknownHostException ex) {
+                    return false;
                 }
             });
             if (!setHostSuccess) {
@@ -450,7 +455,7 @@ public class NodeFragment extends Fragment
 
         private void closeDialog() {
             if (editDialog == null) throw new IllegalStateException();
-            Helper.hideKeyboardAlways(getActivity());
+            Helper.hideKeyboardAlways(requireActivity());
             editDialog.dismiss();
             editDialog = null;
             NodeFragment.this.editDialog = null;
@@ -532,20 +537,10 @@ public class NodeFragment extends Fragment
                 @Override
                 public void onShow(final DialogInterface dialog) {
                     Button testButton = ((AlertDialog) dialog).getButton(AlertDialog.BUTTON_NEUTRAL);
-                    testButton.setOnClickListener(new View.OnClickListener() {
-                        @Override
-                        public void onClick(View view) {
-                            test();
-                        }
-                    });
+                    testButton.setOnClickListener(view -> test());
 
                     Button button = ((AlertDialog) dialog).getButton(AlertDialog.BUTTON_POSITIVE);
-                    button.setOnClickListener(new View.OnClickListener() {
-                        @Override
-                        public void onClick(View view) {
-                            apply();
-                        }
-                    });
+                    button.setOnClickListener(view -> apply());
                 }
             });
 
@@ -553,15 +548,13 @@ public class NodeFragment extends Fragment
                 editDialog.getWindow().setFlags(WindowManager.LayoutParams.FLAG_SECURE, WindowManager.LayoutParams.FLAG_SECURE);
             }
 
-            etNodePass.getEditText().setOnEditorActionListener(new TextView.OnEditorActionListener() {
-                public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
-                    if (actionId == EditorInfo.IME_ACTION_DONE) {
-                        editDialog.getButton(DialogInterface.BUTTON_NEUTRAL).requestFocus();
-                        test();
-                        return true;
-                    }
-                    return false;
+            etNodePass.getEditText().setOnEditorActionListener((v, actionId, event) -> {
+                if (actionId == EditorInfo.IME_ACTION_DONE) {
+                    editDialog.getButton(DialogInterface.BUTTON_NEUTRAL).requestFocus();
+                    test();
+                    return true;
                 }
+                return false;
             });
         }
 
@@ -589,9 +582,11 @@ public class NodeFragment extends Fragment
                     } else {
                         nodesAdapter.setNodes();
                     }
+                    nodesAdapter.notifyItemChanged(nodeInfo);
                 }
             }
         }
+
     }
 
     void restoreDefaultNodes() {

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

@@ -22,7 +22,6 @@ import android.graphics.Bitmap;
 import android.graphics.Canvas;
 import android.graphics.drawable.BitmapDrawable;
 import android.net.Uri;
-import android.nfc.NfcManager;
 import android.os.Bundle;
 import android.text.Editable;
 import android.text.Html;
@@ -33,12 +32,10 @@ import android.view.KeyEvent;
 import android.view.LayoutInflater;
 import android.view.Menu;
 import android.view.MenuInflater;
-import android.view.MenuItem;
 import android.view.View;
 import android.view.ViewGroup;
 import android.view.inputmethod.EditorInfo;
 import android.widget.EditText;
-import android.widget.ImageButton;
 import android.widget.ImageView;
 import android.widget.ProgressBar;
 import android.widget.TextView;
@@ -46,10 +43,7 @@ import android.widget.Toast;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
-import androidx.appcompat.widget.ShareActionProvider;
-import androidx.core.content.ContextCompat;
 import androidx.core.content.FileProvider;
-import androidx.core.view.MenuItemCompat;
 import androidx.fragment.app.Fragment;
 
 import com.google.android.material.textfield.TextInputLayout;
@@ -88,7 +82,6 @@ public class ReceiveFragment extends Fragment {
     private ImageView ivQrCode;
     private ImageView ivQrCodeFull;
     private EditText etDummy;
-    private ImageButton bCopyAddress;
 
     private Wallet wallet = null;
     private boolean isMyWallet = false;
@@ -119,15 +112,15 @@ public class ReceiveFragment extends Fragment {
         tvQrCode = view.findViewById(R.id.tvQrCode);
         ivQrCodeFull = view.findViewById(R.id.qrCodeFull);
         etDummy = view.findViewById(R.id.etDummy);
-        bCopyAddress = view.findViewById(R.id.bCopyAddress);
 
         etDummy.setRawInputType(InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS);
 
-        bCopyAddress.setOnClickListener(v -> copyAddress());
+        view.findViewById(R.id.bCopyAddress).setOnClickListener(v -> copyAddress());
 
         evAmount.setOnNewAmountListener(xmr -> {
             Timber.d("new amount = %s", xmr);
             generateQr();
+            if (shareRequested && (xmr != null)) share();
         });
 
         evAmount.setOnFailedExchangeListener(() -> {
@@ -192,11 +185,6 @@ public class ReceiveFragment extends Fragment {
             throw new IllegalStateException("no wallet info");
         }
 
-        View tvNfc = view.findViewById(R.id.tvNfc);
-        NfcManager manager = (NfcManager) getContext().getSystemService(Context.NFC_SERVICE);
-        if ((manager != null) && (manager.getDefaultAdapter() != null))
-            tvNfc.setVisibility(View.VISIBLE);
-
         return view;
     }
 
@@ -211,42 +199,40 @@ public class ReceiveFragment extends Fragment {
         setSharedElementEnterTransition(transform);
     }
 
-    private ShareActionProvider shareActionProvider;
+    private boolean shareRequested = false;
 
     @Override
     public void onCreateOptionsMenu(@NonNull Menu menu, final MenuInflater inflater) {
         inflater.inflate(R.menu.receive_menu, menu);
         super.onCreateOptionsMenu(menu, inflater);
 
-        // Locate MenuItem with ShareActionProvider
-        MenuItem item = menu.findItem(R.id.menu_item_share);
-
-        // Fetch and store ShareActionProvider
-        shareActionProvider = (ShareActionProvider) MenuItemCompat.getActionProvider(item);
-
-        shareActionProvider.setOnShareTargetSelectedListener(new ShareActionProvider.OnShareTargetSelectedListener() {
-            @Override
-            public boolean onShareTargetSelected(ShareActionProvider shareActionProvider, Intent intent) {
-                saveQrCode(); // save it only if we need it
-                return false;
+        menu.findItem(R.id.menu_item_share).setOnMenuItemClickListener(item -> {
+            if (shareRequested) return true;
+            shareRequested = true;
+            if (!qrValid) {
+                evAmount.doExchange();
+            } else {
+                share();
             }
+            return true;
         });
     }
 
-    private void setShareIntent() {
-        if (shareActionProvider != null) {
-            if (qrValid) {
-                shareActionProvider.setShareIntent(getShareIntent());
-            } else {
-                shareActionProvider.setShareIntent(null);
-            }
+    private void share() {
+        shareRequested = false;
+        if (saveQrCode()) {
+            final Intent sendIntent = getSendIntent();
+            if (sendIntent != null)
+                startActivity(Intent.createChooser(sendIntent, null));
+        } else {
+            Toast.makeText(getActivity(), getString(R.string.message_qr_failed), Toast.LENGTH_SHORT).show();
         }
     }
 
-    private void saveQrCode() {
+    private boolean saveQrCode() {
         if (!qrValid) throw new IllegalStateException("trying to save null qr code!");
 
-        File cachePath = new File(getActivity().getCacheDir(), "images");
+        File cachePath = new File(requireActivity().getCacheDir(), "images");
         if (!cachePath.exists())
             if (!cachePath.mkdirs()) throw new IllegalStateException("cannot create images folder");
         File png = new File(cachePath, "QR.png");
@@ -255,33 +241,35 @@ public class ReceiveFragment extends Fragment {
             Bitmap qrBitmap = ((BitmapDrawable) ivQrCode.getDrawable()).getBitmap();
             qrBitmap.compress(Bitmap.CompressFormat.PNG, 100, stream);
             stream.close();
+            return true;
         } catch (IOException ex) {
             Timber.e(ex);
             // make sure we don't share an old qr code
             if (!png.delete()) throw new IllegalStateException("cannot delete old qr code");
             // if we manage to delete it, the URI points to nothing and the user gets a toast with the error
         }
+        return false;
     }
 
-    private Intent getShareIntent() {
-        File imagePath = new File(getActivity().getCacheDir(), "images");
+    private Intent getSendIntent() {
+        File imagePath = new File(requireActivity().getCacheDir(), "images");
         File png = new File(imagePath, "QR.png");
-        Uri contentUri = FileProvider.getUriForFile(getActivity(),
-                BuildConfig.APPLICATION_ID + ".fileprovider", png);
+        Uri contentUri = FileProvider.getUriForFile(requireActivity(), BuildConfig.APPLICATION_ID + ".fileprovider", png);
         if (contentUri != null) {
             Intent shareIntent = new Intent();
             shareIntent.setAction(Intent.ACTION_SEND);
             shareIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION); // temp permission for receiving app to read this file
-            shareIntent.setDataAndType(contentUri, getActivity().getContentResolver().getType(contentUri));
+            shareIntent.setTypeAndNormalize("image/png");
             shareIntent.putExtra(Intent.EXTRA_STREAM, contentUri);
-            shareIntent.putExtra(Intent.EXTRA_TEXT, bcData.getUriString());
+            if (bcData != null)
+                shareIntent.putExtra(Intent.EXTRA_TEXT, bcData.getUriString());
             return shareIntent;
         }
         return null;
     }
 
     void copyAddress() {
-        Helper.clipBoardCopy(Objects.requireNonNull(getActivity()), getString(R.string.label_copy_address), subaddress.getAddress());
+        Helper.clipBoardCopy(requireActivity(), getString(R.string.label_copy_address), subaddress.getAddress());
         Toast.makeText(getActivity(), getString(R.string.message_copy_address), Toast.LENGTH_SHORT).show();
     }
 
@@ -291,7 +279,6 @@ public class ReceiveFragment extends Fragment {
         if (qrValid) {
             ivQrCode.setImageBitmap(null);
             qrValid = false;
-            setShareIntent();
             if (isLoaded)
                 tvQrCode.setVisibility(View.VISIBLE);
         }
@@ -300,7 +287,6 @@ public class ReceiveFragment extends Fragment {
     void setQR(Bitmap qr) {
         ivQrCode.setImageBitmap(qr);
         qrValid = true;
-        setShareIntent();
         tvQrCode.setVisibility(View.GONE);
     }
 
@@ -405,7 +391,7 @@ public class ReceiveFragment extends Fragment {
 
     private Bitmap getMoneroLogo() {
         if (logo == null) {
-            logo = Helper.getBitmap(getContext(), R.drawable.ic_monero_logo_b);
+            logo = Helper.getBitmap(getContext(), R.drawable.ic_monerujo_qr);
         }
         return logo;
     }
@@ -460,10 +446,10 @@ public class ReceiveFragment extends Fragment {
                     .withEndAction(resetSize).start();
         }
         subaddress = newSubaddress;
-        final Context context = getContext();
+        final Context context = requireContext();
         Spanned label = Html.fromHtml(context.getString(R.string.receive_subaddress,
-                Integer.toHexString(ContextCompat.getColor(context, R.color.monerujoGreen) & 0xFFFFFF),
-                Integer.toHexString(ContextCompat.getColor(context, R.color.monerujoBackground) & 0xFFFFFF),
+                Integer.toHexString(ThemeHelper.getThemedColor(context, R.attr.positiveColor) & 0xFFFFFF),
+                Integer.toHexString(ThemeHelper.getThemedColor(context, android.R.attr.colorBackground) & 0xFFFFFF),
                 subaddress.getDisplayLabel(), subaddress.getAddress()));
         tvAddress.setText(label);
         generateQr();

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

@@ -19,12 +19,14 @@ package com.m2049r.xmrwallet;
 import android.content.Context;
 import android.os.Bundle;
 import android.os.Handler;
-import androidx.fragment.app.Fragment;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.Toast;
 
+import androidx.annotation.NonNull;
+import androidx.fragment.app.Fragment;
+
 import com.google.zxing.BarcodeFormat;
 import com.google.zxing.Result;
 
@@ -42,7 +44,7 @@ public class ScannerFragment extends Fragment implements ZXingScannerView.Result
     private ZXingScannerView mScannerView;
 
     @Override
-    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+    public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
         Timber.d("onCreateView");
         mScannerView = new ZXingScannerView(getActivity());
         return mScannerView;
@@ -84,7 +86,7 @@ public class ScannerFragment extends Fragment implements ZXingScannerView.Result
     }
 
     @Override
-    public void onAttach(Context context) {
+    public void onAttach(@NonNull Context context) {
         super.onAttach(context);
         if (context instanceof OnScannedListener) {
             this.onScannedListener = (OnScannedListener) context;

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

@@ -16,6 +16,8 @@
 
 package com.m2049r.xmrwallet;
 
+import static android.view.WindowManager.LayoutParams;
+
 import android.content.Context;
 import android.content.res.Configuration;
 import android.os.Build;
@@ -29,8 +31,6 @@ import com.m2049r.xmrwallet.util.LocaleHelper;
 
 import java.util.Locale;
 
-import static android.view.WindowManager.LayoutParams;
-
 public abstract class SecureActivity extends AppCompatActivity {
     @Override
     protected void onCreate(@Nullable Bundle savedInstanceState) {
@@ -66,11 +66,7 @@ public abstract class SecureActivity extends AppCompatActivity {
 
         Locale locale = LocaleHelper.getPreferredLocale(this);
         if (locale != null) {
-            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
-                config.setLocale(locale);
-            } else {
-                config.locale = locale;
-            }
+            config.setLocale(locale);
         }
         return config;
     }

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

@@ -0,0 +1,126 @@
+package com.m2049r.xmrwallet;
+
+import android.app.Activity;
+import android.content.Context;
+import android.content.SharedPreferences;
+import android.os.Bundle;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.StyleRes;
+import androidx.preference.ListPreference;
+import androidx.preference.PreferenceFragmentCompat;
+import androidx.preference.PreferenceManager;
+
+import com.m2049r.xmrwallet.dialog.AboutFragment;
+import com.m2049r.xmrwallet.dialog.CreditsFragment;
+import com.m2049r.xmrwallet.dialog.PrivacyFragment;
+import com.m2049r.xmrwallet.util.DayNightMode;
+import com.m2049r.xmrwallet.util.LocaleHelper;
+import com.m2049r.xmrwallet.util.NightmodeHelper;
+import com.m2049r.xmrwallet.util.ThemeHelper;
+import com.m2049r.xmrwallet.widget.Toolbar;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Locale;
+
+import timber.log.Timber;
+
+public class SettingsFragment extends PreferenceFragmentCompat
+        implements SharedPreferences.OnSharedPreferenceChangeListener {
+    @Override
+    public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {
+        setPreferencesFromResource(R.xml.root_preferences, rootKey);
+
+        findPreference(getString(R.string.about_info)).setOnPreferenceClickListener(preference -> {
+            AboutFragment.display(getParentFragmentManager());
+            return true;
+        });
+        findPreference(getString(R.string.privacy_info)).setOnPreferenceClickListener(preference -> {
+            PrivacyFragment.display(getParentFragmentManager());
+            return true;
+        });
+        findPreference(getString(R.string.credits_info)).setOnPreferenceClickListener(preference -> {
+            CreditsFragment.display(getParentFragmentManager());
+            return true;
+        });
+    }
+
+    @Override
+    public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
+        if (key.equals(getString(R.string.preferred_locale))) {
+            activity.recreate();
+        } else if (key.equals(getString(R.string.preferred_nightmode))) {
+            NightmodeHelper.setNightMode(DayNightMode.valueOf(sharedPreferences.getString(key, "AUTO")));
+        } else if (key.equals(getString(R.string.preferred_theme))) {
+            ThemeHelper.setTheme((Activity) activity, sharedPreferences.getString(key, "Classic"));
+            activity.recreate();
+        }
+    }
+
+    private SettingsFragment.Listener activity;
+
+    @Override
+    public void onAttach(@NonNull Context context) {
+        super.onAttach(context);
+        if (context instanceof SettingsFragment.Listener) {
+            activity = (SettingsFragment.Listener) context;
+        } else {
+            throw new ClassCastException(context + " must implement Listener");
+        }
+    }
+
+    @Override
+    public void onResume() {
+        super.onResume();
+        Timber.d("onResume()");
+        activity.setSubtitle(getString(R.string.menu_settings));
+        activity.setToolbarButton(Toolbar.BUTTON_BACK);
+        populateLanguages();
+        PreferenceManager.getDefaultSharedPreferences(requireContext())
+                .registerOnSharedPreferenceChangeListener(this);
+    }
+
+    @Override
+    public void onPause() {
+        super.onPause();
+        PreferenceManager.getDefaultSharedPreferences(requireContext())
+                .unregisterOnSharedPreferenceChangeListener(this);
+    }
+
+    public interface Listener {
+        void setToolbarButton(int type);
+
+        void setSubtitle(String title);
+
+        void recreate();
+
+        void setTheme(@StyleRes final int resId);
+    }
+
+    public void populateLanguages() {
+        ListPreference language = findPreference(getString(R.string.preferred_locale));
+        assert language != null;
+
+        final ArrayList<Locale> availableLocales = LocaleHelper.getAvailableLocales(requireContext());
+        Collections.sort(availableLocales, (locale1, locale2) -> {
+            String localeString1 = LocaleHelper.getDisplayName(locale1, true);
+            String localeString2 = LocaleHelper.getDisplayName(locale2, true);
+            return localeString1.compareTo(localeString2);
+        });
+
+        String[] localeDisplayNames = new String[1 + availableLocales.size()];
+        localeDisplayNames[0] = getString(R.string.language_system_default);
+        for (int i = 1; i < localeDisplayNames.length; i++) {
+            localeDisplayNames[i] = LocaleHelper.getDisplayName(availableLocales.get(i - 1), true);
+        }
+        language.setEntries(localeDisplayNames);
+
+        String[] languageTags = new String[1 + availableLocales.size()];
+        languageTags[0] = "";
+        for (int i = 1; i < languageTags.length; i++) {
+            languageTags[i] = availableLocales.get(i - 1).toLanguageTag();
+        }
+        language.setEntryValues(languageTags);
+    }
+}

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

@@ -0,0 +1,188 @@
+/*
+ * 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;
+
+import android.bluetooth.BluetoothAdapter;
+import android.bluetooth.BluetoothClass;
+import android.bluetooth.BluetoothDevice;
+import android.content.Context;
+import android.content.pm.PackageManager;
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.Menu;
+import android.view.MenuInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.Toast;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.core.app.ActivityCompat;
+import androidx.fragment.app.Fragment;
+import androidx.recyclerview.widget.RecyclerView;
+import androidx.swiperefreshlayout.widget.SwipeRefreshLayout;
+
+import com.m2049r.xmrwallet.data.BluetoothInfo;
+import com.m2049r.xmrwallet.layout.BluetoothInfoAdapter;
+import com.m2049r.xmrwallet.util.Helper;
+import com.m2049r.xmrwallet.widget.Toolbar;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import timber.log.Timber;
+
+public class SidekickConnectFragment extends Fragment
+        implements BluetoothInfoAdapter.OnInteractionListener {
+
+    private BluetoothAdapter bluetoothAdapter;
+
+    private SwipeRefreshLayout pullToRefresh;
+
+    private BluetoothInfoAdapter infoAdapter;
+
+    private Listener activityCallback;
+
+    public interface Listener {
+        void setToolbarButton(int type);
+
+        void setSubtitle(String title);
+    }
+
+    @Override
+    public void onAttach(@NonNull Context context) {
+        super.onAttach(context);
+        if (context instanceof Listener) {
+            this.activityCallback = (Listener) context;
+        } else {
+            throw new ClassCastException(context + " must implement Listener");
+        }
+    }
+
+    @Override
+    public void onPause() {
+        Timber.d("onPause()");
+        if (ActivityCompat.checkSelfPermission(requireContext(), android.Manifest.permission.BLUETOOTH_SCAN) != PackageManager.PERMISSION_GRANTED) {
+            Toast.makeText(requireContext(), "Bluetooth permission not granted", Toast.LENGTH_LONG).show();
+        } else {
+            if (bluetoothAdapter.isDiscovering()) {
+                bluetoothAdapter.cancelDiscovery();
+            }
+        }
+        super.onPause();
+    }
+
+    @Override
+    public void onResume() {
+        super.onResume();
+        Timber.d("onResume()");
+        activityCallback.setSubtitle(getString(R.string.label_bluetooth));
+        activityCallback.setToolbarButton(Toolbar.BUTTON_BACK);
+        final BluetoothFragment btFragment = (BluetoothFragment) getChildFragmentManager().findFragmentById(R.id.bt_fragment);
+        assert btFragment != null;
+        btFragment.start();
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+        Timber.d("onCreateView");
+        View view = inflater.inflate(R.layout.fragment_sidekick_connect, container, false);
+
+        RecyclerView recyclerView = view.findViewById(R.id.list);
+        infoAdapter = new BluetoothInfoAdapter(this);
+        recyclerView.setAdapter(infoAdapter);
+
+        pullToRefresh = view.findViewById(R.id.pullToRefresh);
+        pullToRefresh.setOnRefreshListener(() -> {
+            populateList();
+            pullToRefresh.setRefreshing(false);
+        });
+
+        return view;
+    }
+
+    private void populateList() {
+        List<BluetoothInfo> items = new ArrayList<>();
+        if (ActivityCompat.checkSelfPermission(requireContext(), android.Manifest.permission.BLUETOOTH_SCAN) != PackageManager.PERMISSION_GRANTED) {
+            Toast.makeText(requireContext(), "Bluetooth permission not granted", Toast.LENGTH_LONG).show();
+            return;
+        }
+        for (BluetoothDevice device : bluetoothAdapter.getBondedDevices()) {
+            final int deviceCLass = device.getBluetoothClass().getDeviceClass();
+            switch (deviceCLass) {
+                case BluetoothClass.Device.PHONE_SMART:
+                    //TODO verify these are correct
+                case BluetoothClass.Device.COMPUTER_HANDHELD_PC_PDA:
+                case BluetoothClass.Device.COMPUTER_PALM_SIZE_PC_PDA:
+                    items.add(new BluetoothInfo(device));
+            }
+        }
+        infoAdapter.setItems(items);
+    }
+
+    @Override
+    public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
+        Helper.hideKeyboard(getActivity());
+
+        // Get the local Bluetooth adapter
+        bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
+        populateList();
+    }
+
+    @Override
+    public void onCreate(@Nullable Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setHasOptionsMenu(true);
+    }
+
+    @Override
+    public void onCreateOptionsMenu(@NonNull Menu menu, MenuInflater inflater) {
+        inflater.inflate(R.menu.sidekick_connect_menu, menu);
+        super.onCreateOptionsMenu(menu, inflater);
+    }
+
+    @Override
+    public void onDestroy() {
+        super.onDestroy();
+
+        // Make sure we're not doing discovery anymore
+        if (bluetoothAdapter != null) {
+            if (ActivityCompat.checkSelfPermission(requireContext(), android.Manifest.permission.BLUETOOTH_SCAN) != PackageManager.PERMISSION_GRANTED) {
+                Toast.makeText(requireContext(), "Bluetooth permission not granted", Toast.LENGTH_LONG).show();
+                return;
+            }
+            bluetoothAdapter.cancelDiscovery();
+        }
+    }
+
+    @Override
+    public void onInteraction(final View view, final BluetoothInfo item) {
+        Timber.d("onInteraction %s", item);
+        if (ActivityCompat.checkSelfPermission(requireContext(), android.Manifest.permission.BLUETOOTH_SCAN) != PackageManager.PERMISSION_GRANTED)
+            throw new IllegalStateException("Bluetooth permission not granted");
+        bluetoothAdapter.cancelDiscovery();
+
+        final BluetoothFragment btFragment = (BluetoothFragment) getChildFragmentManager().findFragmentById(R.id.bt_fragment);
+        assert btFragment != null;
+        btFragment.connectDevice(item.getAddress());
+    }
+
+    public void allowClick() {
+        infoAdapter.allowClick(true);
+    }
+}

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

@@ -30,7 +30,6 @@ import androidx.annotation.Nullable;
 import androidx.fragment.app.Fragment;
 import androidx.recyclerview.widget.RecyclerView;
 
-import com.google.android.material.transition.MaterialElevationScale;
 import com.m2049r.xmrwallet.data.Subaddress;
 import com.m2049r.xmrwallet.layout.SubaddressInfoAdapter;
 import com.m2049r.xmrwallet.ledger.LedgerProgressDialog;
@@ -67,6 +66,8 @@ public class SubaddressFragment extends Fragment implements SubaddressInfoAdapte
         void setToolbarButton(int type);
 
         void showSubaddress(View view, final int subaddressIndex);
+
+        void saveWallet();
     }
 
     public interface ProgressListener {
@@ -115,14 +116,6 @@ public class SubaddressFragment extends Fragment implements SubaddressInfoAdapte
         managerMode = ((b != null) && (MODE_MANAGER.equals(b.getString(KEY_MODE))));
 
         View view = inflater.inflate(R.layout.fragment_subaddress, container, false);
-
-        final MaterialElevationScale exitTransition = new MaterialElevationScale(false);
-        exitTransition.setDuration(getResources().getInteger(R.integer.tx_item_transition_duration));
-        setExitTransition(exitTransition);
-        final MaterialElevationScale reenterTransition = new MaterialElevationScale(true);
-        reenterTransition.setDuration(getResources().getInteger(R.integer.tx_item_transition_duration));
-        setReenterTransition(reenterTransition);
-
         view.findViewById(R.id.fab).setOnClickListener(this);
 
         if (managerMode) {
@@ -152,11 +145,6 @@ public class SubaddressFragment extends Fragment implements SubaddressInfoAdapte
     @Override
     public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
         super.onViewCreated(view, savedInstanceState);
-        postponeEnterTransition();
-        view.getViewTreeObserver().addOnPreDrawListener(() -> {
-            startPostponedEnterTransition();
-            return true;
-        });
     }
 
     public void loadList() {
@@ -207,7 +195,7 @@ public class SubaddressFragment extends Fragment implements SubaddressInfoAdapte
         @Override
         protected void onPreExecute() {
             super.onPreExecute();
-            if ((wallet.getDeviceType() == Wallet.Device.Device_Ledger) && (progressCallback != null)) {
+            if ((wallet.getDeviceType() == Wallet.Device.Ledger) && (progressCallback != null)) {
                 progressCallback.showLedgerProgressDialog(LedgerProgressDialog.TYPE_SUBADDRESS);
                 dialogOpened = true;
             }
@@ -217,7 +205,9 @@ public class SubaddressFragment extends Fragment implements SubaddressInfoAdapte
         protected Boolean doInBackground(Void... params) {
             if (params.length != 0) return false;
             wallet.getNewSubaddress();
-            wallet.store();
+            if (activityCallback != null) {
+                activityCallback.saveWallet();
+            }
             return true;
         }
 
@@ -236,7 +226,7 @@ public class SubaddressFragment extends Fragment implements SubaddressInfoAdapte
 
     // Callbacks from SubaddressInfoAdapter
     @Override
-    public void onInteraction(final View view, final Subaddress subaddress) {
+    public void onInteraction(final View view, @NonNull final Subaddress subaddress) {
         if (managerMode)
             activityCallback.showSubaddress(view, subaddress.getAddressIndex());
         else
@@ -248,4 +238,5 @@ public class SubaddressFragment extends Fragment implements SubaddressInfoAdapte
         activityCallback.showSubaddress(view, subaddress.getAddressIndex());
         return false;
     }
+
 }

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

@@ -29,15 +29,15 @@ import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.fragment.app.Fragment;
 import androidx.recyclerview.widget.RecyclerView;
+import androidx.transition.Transition;
+import androidx.transition.TransitionInflater;
 
 import com.google.android.material.textfield.TextInputLayout;
-import com.google.android.material.transition.MaterialContainerTransform;
 import com.m2049r.xmrwallet.data.Subaddress;
 import com.m2049r.xmrwallet.layout.TransactionInfoAdapter;
 import com.m2049r.xmrwallet.model.TransactionInfo;
 import com.m2049r.xmrwallet.model.Wallet;
 import com.m2049r.xmrwallet.util.Helper;
-import com.m2049r.xmrwallet.util.ThemeHelper;
 import com.m2049r.xmrwallet.widget.Toolbar;
 
 import java.util.ArrayList;
@@ -46,13 +46,12 @@ import java.util.List;
 import timber.log.Timber;
 
 public class SubaddressInfoFragment extends Fragment
-        implements TransactionInfoAdapter.OnInteractionListener, OnBlockUpdateListener {
+        implements TransactionInfoAdapter.Listener, OnBlockUpdateListener {
     private TransactionInfoAdapter adapter;
 
     private Subaddress subaddress;
 
     private TextInputLayout etName;
-    private TextView tvAddress;
     private TextView tvTxLabel;
 
     @Override
@@ -61,7 +60,6 @@ public class SubaddressInfoFragment extends Fragment
         View view = inflater.inflate(R.layout.fragment_subaddressinfo, container, false);
 
         etName = view.findViewById(R.id.etName);
-        tvAddress = view.findViewById(R.id.tvAddress);
         tvTxLabel = view.findViewById(R.id.tvTxLabel);
 
         final RecyclerView list = view.findViewById(R.id.list);
@@ -71,12 +69,14 @@ public class SubaddressInfoFragment extends Fragment
         final Wallet wallet = activityCallback.getWallet();
 
         Bundle b = getArguments();
+        assert b != null;
         final int subaddressIndex = b.getInt("subaddressIndex");
         subaddress = wallet.getSubaddressObject(subaddressIndex);
 
         etName.getEditText().setText(subaddress.getDisplayLabel());
-        tvAddress.setText(getContext().getString(R.string.subbaddress_info_subtitle,
-                subaddress.getAddressIndex(), subaddress.getSquashedAddress()));
+        final TextView tvAddress = view.findViewById(R.id.tvAddress);
+        tvAddress.setText(requireContext().getString(R.string.subbaddress_info_subtitle,
+                subaddress.getAddressIndex(), subaddress.getAddress()));
 
         etName.getEditText().setOnFocusChangeListener((v, hasFocus) -> {
             if (!hasFocus) {
@@ -102,10 +102,8 @@ public class SubaddressInfoFragment extends Fragment
     @Override
     public void onCreate(@Nullable Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-        final MaterialContainerTransform transform = new MaterialContainerTransform();
-        transform.setDrawingViewId(R.id.fragment_container);
-        transform.setDuration(getResources().getInteger(R.integer.tx_item_transition_duration));
-        transform.setAllContainerColors(ThemeHelper.getThemedColor(getContext(), android.R.attr.colorBackground));
+        Transition transform = TransitionInflater.from(requireContext())
+                .inflateTransition(R.transition.details);
         setSharedElementEnterTransition(transform);
     }
 
@@ -147,6 +145,8 @@ public class SubaddressInfoFragment extends Fragment
         void setTitle(String title, String subtitle);
 
         void setSubtitle(String subtitle);
+
+        long getDaemonHeight();
     }
 
     @Override
@@ -172,4 +172,9 @@ public class SubaddressInfoFragment extends Fragment
     public void onPause() {
         super.onPause();
     }
+
+    @Override
+    public long getDaemonHeight() {
+        return activityCallback.getDaemonHeight();
+    }
 }

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

@@ -20,7 +20,6 @@ import android.annotation.SuppressLint;
 import android.content.Context;
 import android.content.Intent;
 import android.graphics.Paint;
-import android.net.Uri;
 import android.os.Bundle;
 import android.text.Html;
 import android.text.InputType;
@@ -34,17 +33,19 @@ import android.widget.ImageView;
 import android.widget.TextView;
 import android.widget.Toast;
 
+import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
-import androidx.core.content.ContextCompat;
 import androidx.fragment.app.Fragment;
+import androidx.transition.Transition;
+import androidx.transition.TransitionInflater;
 
-import com.google.android.material.transition.MaterialContainerTransform;
-import com.google.android.material.transition.MaterialElevationScale;
 import com.m2049r.xmrwallet.data.Subaddress;
 import com.m2049r.xmrwallet.data.UserNotes;
 import com.m2049r.xmrwallet.model.TransactionInfo;
 import com.m2049r.xmrwallet.model.Transfer;
 import com.m2049r.xmrwallet.model.Wallet;
+import com.m2049r.xmrwallet.service.shift.ShiftService;
+import com.m2049r.xmrwallet.service.shift.api.ShiftApi;
 import com.m2049r.xmrwallet.util.Helper;
 import com.m2049r.xmrwallet.util.ThemeHelper;
 import com.m2049r.xmrwallet.widget.Toolbar;
@@ -62,6 +63,7 @@ public class TxFragment extends Fragment {
 
     static public final String ARG_INFO = "info";
 
+    @SuppressLint("SimpleDateFormat")
     private final SimpleDateFormat TS_FORMATTER = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss Z");
 
     public TxFragment() {
@@ -80,10 +82,14 @@ public class TxFragment extends Fragment {
     private TextView tvTxPaymentId;
     private TextView tvTxBlockheight;
     private TextView tvTxAmount;
+    private TextView tvTxPocketChangeAmount;
     private TextView tvTxFee;
     private TextView tvTxTransfers;
     private TextView etTxNotes;
 
+    private View llWarning;
+    private TextView tvWarning;
+
     // XMRTO stuff
     private View cvXmrTo;
     private TextView tvTxXmrToKey;
@@ -97,19 +103,13 @@ public class TxFragment extends Fragment {
     public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
         View view = inflater.inflate(R.layout.fragment_tx_info, container, false);
 
-        final MaterialElevationScale exitTransition = new MaterialElevationScale(false);
-        exitTransition.setDuration(getResources().getInteger(R.integer.tx_item_transition_duration));
-        setExitTransition(exitTransition);
-        final MaterialElevationScale reenterTransition = new MaterialElevationScale(true);
-        reenterTransition.setDuration(getResources().getInteger(R.integer.tx_item_transition_duration));
-        setReenterTransition(reenterTransition);
-
         cvXmrTo = view.findViewById(R.id.cvXmrTo);
         tvTxXmrToKey = view.findViewById(R.id.tvTxXmrToKey);
         tvDestinationBtc = view.findViewById(R.id.tvDestinationBtc);
         tvTxAmountBtc = view.findViewById(R.id.tvTxAmountBtc);
         tvXmrToSupport = view.findViewById(R.id.tvXmrToSupport);
         tvXmrToKeyLabel = view.findViewById(R.id.tvXmrToKeyLabel);
+
         tvXmrToLogo = view.findViewById(R.id.tvXmrToLogo);
 
         tvAccount = view.findViewById(R.id.tvAccount);
@@ -121,25 +121,30 @@ public class TxFragment extends Fragment {
         tvTxPaymentId = view.findViewById(R.id.tvTxPaymentId);
         tvTxBlockheight = view.findViewById(R.id.tvTxBlockheight);
         tvTxAmount = view.findViewById(R.id.tvTxAmount);
+        tvTxPocketChangeAmount = view.findViewById(R.id.tvTxPocketChangeAmount);
         tvTxFee = view.findViewById(R.id.tvTxFee);
         tvTxTransfers = view.findViewById(R.id.tvTxTransfers);
         etTxNotes = view.findViewById(R.id.etTxNotes);
-
         etTxNotes.setRawInputType(InputType.TYPE_CLASS_TEXT);
 
+        llWarning = view.findViewById(R.id.llWarning);
+        tvWarning = view.findViewById(R.id.tvWarning);
+
         tvTxXmrToKey.setOnClickListener(v -> {
-            Helper.clipBoardCopy(getActivity(), getString(R.string.label_copy_xmrtokey), tvTxXmrToKey.getText().toString());
+            Helper.clipBoardCopy(requireActivity(), getString(R.string.label_copy_xmrtokey), tvTxXmrToKey.getText().toString());
             Toast.makeText(getActivity(), getString(R.string.message_copy_xmrtokey), Toast.LENGTH_SHORT).show();
         });
 
-        info = getArguments().getParcelable(ARG_INFO);
+        final Bundle args = getArguments();
+        assert args != null;
+        info = args.getParcelable(ARG_INFO);
         show();
         return view;
     }
 
     void shareTxInfo() {
         if (this.info == null) return;
-        StringBuffer sb = new StringBuffer();
+        StringBuilder sb = new StringBuilder();
 
         sb.append(getString(R.string.tx_timestamp)).append(":\n");
         sb.append(TS_FORMATTER.format(new Date(info.timestamp * 1000))).append("\n\n");
@@ -217,11 +222,11 @@ public class TxFragment extends Fragment {
 
     private void showSubaddressLabel() {
         final Subaddress subaddress = activityCallback.getWalletSubaddress(info.accountIndex, info.addressIndex);
-        final Context ctx = getContext();
+        final Context ctx = requireContext();
         Spanned label = Html.fromHtml(ctx.getString(R.string.tx_account_formatted,
                 info.accountIndex, info.addressIndex,
-                Integer.toHexString(ContextCompat.getColor(ctx, R.color.monerujoGreen) & 0xFFFFFF),
-                Integer.toHexString(ContextCompat.getColor(ctx, R.color.monerujoBackground) & 0xFFFFFF),
+                Integer.toHexString(ThemeHelper.getThemedColor(ctx, R.attr.positiveColor) & 0xFFFFFF),
+                Integer.toHexString(ThemeHelper.getThemedColor(ctx, android.R.attr.colorBackground) & 0xFFFFFF),
                 subaddress.getDisplayLabel()));
         tvAccount.setText(label);
         tvAccount.setOnClickListener(v -> activityCallback.showSubaddress(v, info.addressIndex));
@@ -252,8 +257,10 @@ public class TxFragment extends Fragment {
         }
         String sign = (info.direction == TransactionInfo.Direction.Direction_In ? "+" : "-");
 
-        long realAmount = info.amount;
-        tvTxAmount.setText(sign + Wallet.getDisplayAmount(realAmount));
+        tvTxAmount.setText(sign + Wallet.getDisplayAmount(info.amount));
+        final long pcAmount = info.getPocketChangeAmount();
+        tvTxPocketChangeAmount.setVisibility(pcAmount > 0 ? View.VISIBLE : View.GONE);
+        tvTxPocketChangeAmount.setText(getString(R.string.pocketchange_tx_detail, Wallet.getDisplayAmount(pcAmount)));
 
         if ((info.fee > 0)) {
             String fee = Wallet.getDisplayAmount(info.fee);
@@ -263,16 +270,17 @@ public class TxFragment extends Fragment {
             tvTxFee.setVisibility(View.GONE);
         }
 
+        final Context ctx = requireContext();
         if (info.isFailed) {
             tvTxAmount.setText(getString(R.string.tx_list_amount_failed, Wallet.getDisplayAmount(info.amount)));
             tvTxFee.setText(getString(R.string.tx_list_failed_text));
-            setTxColour(ContextCompat.getColor(getContext(), R.color.tx_failed));
+            setTxColour(ThemeHelper.getThemedColor(ctx, R.attr.neutralColor));
         } else if (info.isPending) {
-            setTxColour(ContextCompat.getColor(getContext(), R.color.tx_pending));
+            setTxColour(ThemeHelper.getThemedColor(ctx, R.attr.neutralColor));
         } else if (info.direction == TransactionInfo.Direction.Direction_In) {
-            setTxColour(ContextCompat.getColor(getContext(), R.color.tx_plus));
+            setTxColour(ThemeHelper.getThemedColor(ctx, R.attr.positiveColor));
         } else {
-            setTxColour(ContextCompat.getColor(getContext(), R.color.tx_minus));
+            setTxColour(ThemeHelper.getThemedColor(ctx, R.attr.negativeColor));
         }
         Set<String> destinations = new HashSet<>();
         StringBuilder sb = new StringBuilder();
@@ -307,37 +315,49 @@ public class TxFragment extends Fragment {
         tvTxTransfers.setText(sb.toString());
         tvDestination.setText(dstSb.toString());
         showBtcInfo();
+
+        showLock();
+    }
+
+    private void showLock() {
+        llWarning.setVisibility(View.GONE);
+        if (info.unlockTime == 0) return;
+        final long blockheight = activityCallback.getDaemonHeight();
+        final long blocks = info.unlockTime - blockheight;
+        final double unlockDays = blocks / (30. * 24);
+        if (unlockDays > 0) {
+            llWarning.setVisibility(View.VISIBLE);
+            tvWarning.setText(getString(R.string.tx_locked, info.unlockTime, blocks, unlockDays));
+        }
     }
 
     @SuppressLint("SetTextI18n")
     void showBtcInfo() {
         if (userNotes.xmrtoKey != null) {
             cvXmrTo.setVisibility(View.VISIBLE);
-            String key = userNotes.xmrtoKey;
-            if ("xmrto".equals(userNotes.xmrtoTag)) { // legacy xmr.to service :(
-                key = "xmrto-" + key;
-            }
-            tvTxXmrToKey.setText(key);
+
+            ShiftService service = ShiftService.findWithTag(userNotes.xmrtoTag);
+            tvXmrToKeyLabel.setText(getString(R.string.label_send_btc_xmrto_key_lb, service.getLabel()));
+            if (service.getIconId() == 0)
+                tvXmrToLogo.setVisibility(View.GONE);
+            else
+                tvXmrToLogo.setImageResource(service.getLogoId());
+
+            tvTxXmrToKey.setText(userNotes.xmrtoKey);
+
             tvDestinationBtc.setText(userNotes.xmrtoDestination);
             tvTxAmountBtc.setText(userNotes.xmrtoAmount + " " + userNotes.xmrtoCurrency);
-            switch (userNotes.xmrtoTag) {
-                case "xmrto":
-                    tvXmrToSupport.setVisibility(View.GONE);
-                    tvXmrToKeyLabel.setVisibility(View.INVISIBLE);
-                    tvXmrToLogo.setImageResource(R.drawable.ic_xmrto_logo);
-                    break;
-                case "side": // defaults in layout - just add underline
-                    tvXmrToSupport.setPaintFlags(tvXmrToSupport.getPaintFlags() | Paint.UNDERLINE_TEXT_FLAG);
-                    tvXmrToSupport.setOnClickListener(v -> {
-                        Uri uri = Uri.parse("https://sideshift.ai/orders/" + userNotes.xmrtoKey);
-                        Intent intent = new Intent(Intent.ACTION_VIEW, uri);
-                        startActivity(intent);
-                    });
-                    break;
-                default:
-                    tvXmrToSupport.setVisibility(View.GONE);
-                    tvXmrToKeyLabel.setVisibility(View.INVISIBLE);
-                    tvXmrToLogo.setVisibility(View.GONE);
+
+            ShiftApi shiftApi = service.getShiftApi();
+            if (shiftApi != null) {
+                tvXmrToSupport.setText(getString(R.string.label_send_btc_xmrto_info, service.getLabel()));
+                tvXmrToSupport.setPaintFlags(tvXmrToSupport.getPaintFlags() | Paint.UNDERLINE_TEXT_FLAG);
+                tvXmrToSupport.setOnClickListener(v -> {
+                    startActivity(new Intent(Intent.ACTION_VIEW, shiftApi.getQueryOrderUri(userNotes.xmrtoKey)));
+                });
+            } else {
+                tvXmrToSupport.setVisibility(View.GONE);
+                tvXmrToKeyLabel.setVisibility(View.INVISIBLE);
             }
         } else {
             cvXmrTo.setVisibility(View.GONE);
@@ -348,15 +368,13 @@ public class TxFragment extends Fragment {
     public void onCreate(@Nullable Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setHasOptionsMenu(true);
-        final MaterialContainerTransform transform = new MaterialContainerTransform();
-        transform.setDrawingViewId(R.id.fragment_container);
-        transform.setDuration(getResources().getInteger(R.integer.tx_item_transition_duration));
-        transform.setAllContainerColors(ThemeHelper.getThemedColor(getContext(), android.R.attr.colorBackground));
+        Transition transform = TransitionInflater.from(requireContext())
+                .inflateTransition(R.transition.details);
         setSharedElementEnterTransition(transform);
     }
 
     @Override
-    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
+    public void onCreateOptionsMenu(@NonNull Menu menu, MenuInflater inflater) {
         inflater.inflate(R.menu.tx_info_menu, menu);
         super.onCreateOptionsMenu(menu, inflater);
     }
@@ -380,10 +398,11 @@ public class TxFragment extends Fragment {
 
         void showSubaddress(View view, final int subaddressIndex);
 
+        long getDaemonHeight();
     }
 
     @Override
-    public void onAttach(Context context) {
+    public void onAttach(@NonNull Context context) {
         super.onAttach(context);
         if (context instanceof TxFragment.Listener) {
             this.activityCallback = (TxFragment.Listener) context;

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

@@ -43,7 +43,6 @@ import androidx.fragment.app.Fragment;
 import androidx.recyclerview.widget.RecyclerView;
 
 import com.github.brnunes.swipeablerecyclerview.SwipeableRecyclerViewTouchListener;
-import com.google.android.material.transition.MaterialElevationScale;
 import com.m2049r.xmrwallet.layout.TransactionInfoAdapter;
 import com.m2049r.xmrwallet.model.TransactionInfo;
 import com.m2049r.xmrwallet.model.Wallet;
@@ -52,18 +51,19 @@ import com.m2049r.xmrwallet.service.exchange.api.ExchangeCallback;
 import com.m2049r.xmrwallet.service.exchange.api.ExchangeRate;
 import com.m2049r.xmrwallet.util.Helper;
 import com.m2049r.xmrwallet.util.ServiceHelper;
+import com.m2049r.xmrwallet.util.StickyFiatHelper;
+import com.m2049r.xmrwallet.util.ThemeHelper;
 import com.m2049r.xmrwallet.widget.Toolbar;
 
 import java.text.NumberFormat;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
-import java.util.Objects;
 
 import timber.log.Timber;
 
 public class WalletFragment extends Fragment
-        implements TransactionInfoAdapter.OnInteractionListener {
+        implements TransactionInfoAdapter.Listener {
     private TransactionInfoAdapter adapter;
     private final NumberFormat formatter = NumberFormat.getInstance();
 
@@ -112,15 +112,16 @@ public class WalletFragment extends Fragment
         llBalance = view.findViewById(R.id.llBalance);
         flExchange = view.findViewById(R.id.flExchange);
         ((ProgressBar) view.findViewById(R.id.pbExchange)).getIndeterminateDrawable().
-                setColorFilter(getResources().getColor(R.color.progress_circle),
+                setColorFilter(
+                        ThemeHelper.getThemedColor(requireContext(), com.google.android.material.R.attr.colorPrimaryVariant),
                         android.graphics.PorterDuff.Mode.MULTIPLY);
 
         tvProgress = view.findViewById(R.id.tvProgress);
         pbProgress = view.findViewById(R.id.pbProgress);
         tvBalance = view.findViewById(R.id.tvBalance);
-        showBalance(Helper.getDisplayAmount(0));
+        showBalance();
         tvUnconfirmedAmount = view.findViewById(R.id.tvUnconfirmedAmount);
-        showUnconfirmed(0);
+        showUnconfirmed();
         ivSynced = view.findViewById(R.id.ivSynced);
 
         sCurrency = view.findViewById(R.id.sCurrency);
@@ -128,9 +129,10 @@ public class WalletFragment extends Fragment
         currencies.add(Helper.BASE_CRYPTO);
         if (Helper.SHOW_EXCHANGERATES)
             currencies.addAll(Arrays.asList(getResources().getStringArray(R.array.currency)));
-        ArrayAdapter<String> spinnerAdapter = new ArrayAdapter<>(Objects.requireNonNull(getContext()), R.layout.item_spinner_balance, currencies);
+        ArrayAdapter<String> spinnerAdapter = new ArrayAdapter<>(requireContext(), R.layout.item_spinner_balance, currencies);
         spinnerAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
         sCurrency.setAdapter(spinnerAdapter);
+        StickyFiatHelper.setPreferredCurrencyPosition(sCurrency);
 
         bSend = view.findViewById(R.id.bSend);
         bReceive = view.findViewById(R.id.bReceive);
@@ -182,6 +184,7 @@ public class WalletFragment extends Fragment
         sCurrency.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
             @Override
             public void onItemSelected(AdapterView<?> parentView, View selectedItemView, int position, long id) {
+                StickyFiatHelper.setPreferredFiatSymbol(requireContext(), (String) sCurrency.getSelectedItem());
                 refreshBalance();
             }
 
@@ -203,14 +206,20 @@ public class WalletFragment extends Fragment
     @Override
     public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
         super.onViewCreated(view, savedInstanceState);
-        postponeEnterTransition();
-        view.getViewTreeObserver().addOnPreDrawListener(() -> {
-            startPostponedEnterTransition();
-            return true;
-        });
     }
 
-    void showBalance(String balance) {
+    String amountToString(double amount) {
+        if (!Helper.BASE_CRYPTO.equals(balanceCurrency)) { // not XMR
+            double amountB = amount * balanceRate;
+            return Helper.getFormattedAmount(amountB, false);
+        } else { // XMR
+            return Helper.getFormattedAmount(amount, true);
+        }
+    }
+
+    void showBalance() {
+        double amountA = Helper.getDecimalAmount(unlockedBalance).doubleValue();
+        String balance = amountToString(amountA);
         tvBalance.setText(balance);
         final boolean streetMode = activityCallback.isStreetMode();
         if (!streetMode) {
@@ -223,27 +232,23 @@ public class WalletFragment extends Fragment
         setStreetModeBackground(streetMode);
     }
 
-    void showUnconfirmed(double unconfirmedAmount) {
-        if (!activityCallback.isStreetMode()) {
-            String unconfirmed = Helper.getFormattedAmount(unconfirmedAmount, true);
-            tvUnconfirmedAmount.setText(getResources().getString(R.string.xmr_unconfirmed_amount, unconfirmed));
-        } else {
+    void showUnconfirmed() {
+        double unconfirmedAmount = Helper.getDecimalAmount(balance - unlockedBalance).doubleValue();
+        if (activityCallback.isStreetMode() || unconfirmedAmount == 0) {
             tvUnconfirmedAmount.setText(null);
+            tvUnconfirmedAmount.setVisibility(View.GONE);
+        } else {
+            String unconfirmed = amountToString(unconfirmedAmount);
+            tvUnconfirmedAmount.setText(getResources().getString(R.string.xmr_unconfirmed_amount, unconfirmed, balanceCurrency));
+            tvUnconfirmedAmount.setVisibility(View.VISIBLE);
         }
     }
 
     void updateBalance() {
         if (isExchanging) return; // wait for exchange to finish - it will fire this itself then.
         // at this point selection is XMR in case of error
-        String displayB;
-        double amountA = Helper.getDecimalAmount(unlockedBalance).doubleValue();
-        if (!Helper.BASE_CRYPTO.equals(balanceCurrency)) { // not XMR
-            double amountB = amountA * balanceRate;
-            displayB = Helper.getFormattedAmount(amountB, false);
-        } else { // XMR
-            displayB = Helper.getFormattedAmount(amountA, true);
-        }
-        showBalance(displayB);
+        showBalance();
+        showUnconfirmed();
     }
 
     String balanceCurrency = Helper.BASE_CRYPTO;
@@ -252,11 +257,11 @@ public class WalletFragment extends Fragment
     private final ExchangeApi exchangeApi = ServiceHelper.getExchangeApi();
 
     void refreshBalance() {
-        double unconfirmedXmr = Helper.getDecimalAmount(balance - unlockedBalance).doubleValue();
-        showUnconfirmed(unconfirmedXmr);
         if (sCurrency.getSelectedItemPosition() == 0) { // XMR
-            double amountXmr = Helper.getDecimalAmount(unlockedBalance).doubleValue();
-            showBalance(Helper.getFormattedAmount(amountXmr, true));
+            balanceCurrency = Helper.BASE_CRYPTO;
+            balanceRate = 1.0;
+            showBalance();
+            showUnconfirmed();
         } else { // not XMR
             String currency = (String) sCurrency.getSelectedItem();
             Timber.d(currency);
@@ -301,8 +306,7 @@ public class WalletFragment extends Fragment
 
     public void exchangeFailed() {
         sCurrency.setSelection(0, true); // default to XMR
-        double amountXmr = Helper.getDecimalAmount(unlockedBalance).doubleValue();
-        showBalance(Helper.getFormattedAmount(amountXmr, true));
+        showBalance();
         hideExchanging();
     }
 
@@ -314,13 +318,7 @@ public class WalletFragment extends Fragment
             balanceCurrency = Helper.BASE_CRYPTO;
             balanceRate = 1.0;
         } else {
-            int spinnerPosition = ((ArrayAdapter) sCurrency.getAdapter()).getPosition(exchangeRate.getQuoteCurrency());
-            if (spinnerPosition < 0) { // requested currency not in list
-                Timber.e("Requested currency not in list %s", exchangeRate.getQuoteCurrency());
-                sCurrency.setSelection(0, true);
-            } else {
-                sCurrency.setSelection(spinnerPosition, true);
-            }
+            StickyFiatHelper.setCurrencyPosition(sCurrency, exchangeRate.getQuoteCurrency());
             balanceCurrency = exchangeRate.getQuoteCurrency();
             balanceRate = exchangeRate.getRate();
         }
@@ -330,29 +328,24 @@ public class WalletFragment extends Fragment
     // Callbacks from TransactionInfoAdapter
     @Override
     public void onInteraction(final View view, final TransactionInfo infoItem) {
-        final MaterialElevationScale exitTransition = new MaterialElevationScale(false);
-        exitTransition.setDuration(getResources().getInteger(R.integer.tx_item_transition_duration));
-        setExitTransition(exitTransition);
-        final MaterialElevationScale reenterTransition = new MaterialElevationScale(true);
-        reenterTransition.setDuration(getResources().getInteger(R.integer.tx_item_transition_duration));
-        setReenterTransition(reenterTransition);
-
         activityCallback.onTxDetailsRequest(view, infoItem);
     }
 
-    // called from activity
-
-
     // if account index has changed scroll to top?
     private int accountIndex = 0;
 
-    public void onRefreshed(final Wallet wallet, final boolean full) {
+    public void onRefreshed(final Wallet wallet, boolean full) {
         Timber.d("onRefreshed(%b)", full);
 
+        if (adapter.needsTransactionUpdateOnNewBlock()) {
+            wallet.refreshHistory();
+            full = true;
+        }
         if (full) {
             List<TransactionInfo> list = new ArrayList<>();
             final long streetHeight = activityCallback.getStreetModeHeight();
             Timber.d("StreetHeight=%d", streetHeight);
+            wallet.refreshHistory();
             for (TransactionInfo info : wallet.getHistory().getAll()) {
                 Timber.d("TxHeight=%d, Label=%s", info.blockheight, info.subaddressLabel);
                 if ((info.isPending || (info.blockheight >= streetHeight))
@@ -451,12 +444,13 @@ public class WalletFragment extends Fragment
         String sync;
         if (!activityCallback.hasBoundService())
             throw new IllegalStateException("WalletService not bound.");
+        ivSynced.setVisibility(View.GONE);
         Wallet.ConnectionStatus daemonConnected = activityCallback.getConnectionStatus();
         if (daemonConnected == Wallet.ConnectionStatus.ConnectionStatus_Connected) {
             if (!wallet.isSynchronized()) {
-                long daemonHeight = activityCallback.getDaemonHeight();
-                long walletHeight = wallet.getBlockChainHeight();
-                long n = daemonHeight - walletHeight;
+                final long daemonHeight = getDaemonHeight();
+                final long walletHeight = wallet.getBlockChainHeight();
+                final long n = daemonHeight - walletHeight;
                 sync = getString(R.string.status_syncing) + " " + formatter.format(n) + " " + getString(R.string.status_remaining);
                 if (firstBlock == 0) {
                     firstBlock = walletHeight;
@@ -464,7 +458,6 @@ public class WalletFragment extends Fragment
                 int x = 100 - Math.round(100f * n / (1f * daemonHeight - firstBlock));
                 if (x == 0) x = 101; // indeterminate
                 setProgress(x);
-                ivSynced.setVisibility(View.GONE);
             } else {
                 sync = getString(R.string.status_synced) + " " + formatter.format(wallet.getBlockChainHeight());
                 ivSynced.setVisibility(View.VISIBLE);
@@ -530,8 +523,6 @@ public class WalletFragment extends Fragment
     @Override
     public void onResume() {
         super.onResume();
-        setExitTransition(null);
-        setReenterTransition(null);
         Timber.d("onResume()");
         activityCallback.setTitle(walletTitle, walletSubtitle);
         activityCallback.setToolbarButton(Toolbar.BUTTON_NONE);
@@ -561,9 +552,14 @@ public class WalletFragment extends Fragment
         //TODO figure out why gunther disappears on return from send although he is still set
         if (enable) {
             if (streetGunther == null)
-                streetGunther = ContextCompat.getDrawable(Objects.requireNonNull(getContext()), R.drawable.ic_gunther_streetmode);
+                streetGunther = ContextCompat.getDrawable(requireContext(), R.drawable.ic_gunther_streetmode);
             ivStreetGunther.setImageDrawable(streetGunther);
         } else
             ivStreetGunther.setImageDrawable(null);
     }
+
+    @Override
+    public long getDaemonHeight() {
+        return activityCallback.getDaemonHeight();
+    }
 }

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

@@ -21,22 +21,27 @@ import android.content.Context;
 import android.content.res.Configuration;
 import android.os.Build;
 
-import com.m2049r.xmrwallet.BuildConfig;
+import androidx.annotation.NonNull;
+
 import com.m2049r.xmrwallet.model.NetworkType;
 import com.m2049r.xmrwallet.util.LocaleHelper;
+import com.m2049r.xmrwallet.util.NetCipherHelper;
 import com.m2049r.xmrwallet.util.NightmodeHelper;
 
 import timber.log.Timber;
 
 public class XmrWalletApplication extends Application {
+
     @Override
     public void onCreate() {
         super.onCreate();
-
         if (BuildConfig.DEBUG) {
             Timber.plant(new Timber.DebugTree());
         }
+
         NightmodeHelper.setPreferredNightmode(this);
+
+        NetCipherHelper.createInstance(this);
     }
 
     @Override
@@ -45,7 +50,7 @@ public class XmrWalletApplication extends Application {
     }
 
     @Override
-    public void onConfigurationChanged(Configuration configuration) {
+    public void onConfigurationChanged(@NonNull Configuration configuration) {
         super.onConfigurationChanged(configuration);
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
             LocaleHelper.updateSystemDefaultLocale(configuration.getLocales().get(0));

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

@@ -24,43 +24,38 @@ import java.net.URI;
 import java.net.URISyntaxException;
 import java.util.ArrayList;
 import java.util.HashMap;
+import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
+import java.util.Set;
 
+import lombok.Getter;
 import lombok.ToString;
 import timber.log.Timber;
 
+@Getter
 @ToString
 public class BarcodeData {
+
     public enum Security {
         NORMAL,
         OA_NO_DNSSEC,
         OA_DNSSEC
     }
 
-    final public Crypto asset;
-    final public List<Crypto> ambiguousAssets;
-    final public String address;
-    final public String addressName;
-    final public String amount;
-    final public String description;
-    final public Security security;
+    final private Set<Crypto> possibleAssets = new HashSet<>();
+    private String address = null;
+    private String addressName = null;
+    private String amount = null;
+    private String description = null;
+    private Security security = null;
 
     public BarcodeData(List<Crypto> assets, String address) {
         if (assets.isEmpty())
             throw new IllegalArgumentException("no assets specified");
-        this.addressName = null;
-        this.description = null;
-        this.amount = null;
-        this.security = Security.NORMAL;
+        security = Security.NORMAL;
         this.address = address;
-        if (assets.size() == 1) {
-            this.asset = assets.get(0);
-            this.ambiguousAssets = null;
-        } else {
-            this.asset = null;
-            this.ambiguousAssets = assets;
-        }
+        possibleAssets.addAll(assets);
     }
 
     public BarcodeData(Crypto asset, String address, String description, String amount) {
@@ -68,8 +63,7 @@ public class BarcodeData {
     }
 
     public BarcodeData(Crypto asset, String address, String addressName, String description, String amount, Security security) {
-        this.ambiguousAssets = null;
-        this.asset = asset;
+        possibleAssets.add(asset);
         this.address = address;
         this.addressName = addressName;
         this.description = description;
@@ -82,7 +76,7 @@ public class BarcodeData {
     }
 
     public String getUriString() {
-        if (asset != Crypto.XMR) throw new IllegalStateException("We can only do XMR stuff!");
+        if (getAsset() != Crypto.XMR) throw new IllegalStateException("We can only do XMR stuff!");
         StringBuilder sb = new StringBuilder();
         sb.append(Crypto.XMR.getUriScheme())
                 .append(':')
@@ -227,6 +221,20 @@ public class BarcodeData {
     }
 
     public boolean isAmbiguous() {
-        return ambiguousAssets != null;
+        return possibleAssets.size() > 1;
+    }
+
+    public Crypto getAsset() {
+        if (possibleAssets.size() == 1) {
+            return possibleAssets.iterator().next();
+        } else {
+            return null;
+        }
+    }
+
+    // return true if we still have possible assets
+    public boolean filter(Set<Crypto> assets) {
+        possibleAssets.retainAll(assets);
+        return !possibleAssets.isEmpty();
     }
 }