Background Sync Implementation

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

@@ -35,6 +35,7 @@ import android.view.View;
 import android.view.inputmethod.EditorInfo;
 import android.widget.EditText;
 import android.widget.TextView;
+import android.widget.Switch;
 import android.widget.Toast;
 
 import androidx.annotation.NonNull;
@@ -104,6 +105,8 @@ public class WalletActivity extends BaseActivity implements WalletFragment.Liste
 
     private long streetMode = 0;
     private boolean isLockMode = false;
+    private SharedPreferences sharedPreferences ;
+    private boolean enableBkgSync;
 
     @Override
     public void onPasswordChanged(String newPassword) {
@@ -318,11 +321,39 @@ public class WalletActivity extends BaseActivity implements WalletFragment.Liste
             } else {
                 onEnableLockMode();
             }
+        } else if (itemId == R.id.action_background_sync) {
+            showToggleDialog();
         } else
             return super.onOptionsItemSelected(item);
         return true;
     }
 
+    private void showToggleDialog() {
+        AlertDialog.Builder builder = new AlertDialog.Builder(this);
+        builder.setTitle("Background Sync");
+
+        // set the custom layout
+        final View customLayout = getLayoutInflater().inflate(R.layout.toggle_dialog_layout, null);
+        builder.setView(customLayout);
+
+        // Access the Switch widget and TextView from the inflated layout
+        final Switch toggleSwitch = customLayout.findViewById(R.id.toggleSwitch);
+
+        // Initialize the toggle button state
+        toggleSwitch.setChecked(enableBkgSync);
+
+        builder.setPositiveButton("OK", (dialogInterface, which) -> {
+            // Save the toggle state to SharedPreferences
+            enableBkgSync = toggleSwitch.isChecked();
+            SharedPreferences.Editor editor = sharedPreferences.edit();
+            editor.putBoolean("toggleState", enableBkgSync);
+            editor.apply();
+        });
+
+        AlertDialog dialog = builder.create();
+        dialog.show();
+    }
+
     @Override
     public boolean isLockMode() { return isLockMode; }
 
@@ -330,6 +361,10 @@ public class WalletActivity extends BaseActivity implements WalletFragment.Liste
         isLockMode = true;
         enableStreetMode(true);
         updateStreetMode();
+
+        if(getWallet() != null && enableBkgSync) {
+            getWallet().startBackgroundSync();
+        }
     }
 
     private void updateStreetMode() {
@@ -348,6 +383,10 @@ public class WalletActivity extends BaseActivity implements WalletFragment.Liste
                 runOnUiThread(() -> {
                     enableStreetMode(false);
                     updateStreetMode();
+
+                    if(getWallet() != null) {
+                        getWallet().stopBackgroundSync(password);
+                    }
                 });
             }
 
@@ -431,6 +470,9 @@ public class WalletActivity extends BaseActivity implements WalletFragment.Liste
 
         startWalletService();
         Timber.d("onCreate() done.");
+
+        sharedPreferences = getSharedPreferences("MyPrefs", Context.MODE_PRIVATE);
+        enableBkgSync = sharedPreferences.getBoolean("toggleState", false);
     }
 
     public void showNet() {

app/src/main/res/layout/toggle_dialog_layout.xml

@@ -0,0 +1,42 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="vertical"
+    android:paddingHorizontal="30dp">
+
+    <!-- Text at the top -->
+    <TextView
+        android:id="@+id/topTextView"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="10dp"
+        android:text="Background Sync enables users to keep their wallets syncing in the background using only their view-keys, and having their spend key wiped from memory."
+        android:textAppearance="?android:attr/textAppearanceMedium" />
+
+    <!-- Layout for the text and switch -->
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal"
+        android:paddingTop="8dp"
+        android:paddingStart="20dp">
+
+        <!-- Text on the left -->
+        <TextView
+            android:id="@+id/leftTextView"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:text="Enable Background Sync"
+            android:textAppearance="?android:attr/textAppearanceMedium" />
+
+        <!-- Switch on the right -->
+        <Switch
+            android:id="@+id/toggleSwitch"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="end" />
+
+    </LinearLayout>
+</LinearLayout>

app/src/main/res/menu/wallet_menu.xml

@@ -54,4 +54,9 @@
         android:title="@string/pocketchange_title"
         app:showAsAction="never" />
 
+    <item
+        android:id="@+id/action_background_sync"
+        android:orderInCategory="900"
+        android:title="@string/background_sync"
+        app:showAsAction="never" />
 </menu>

app/src/main/res/values/strings.xml

@@ -499,4 +499,5 @@
 
     <string name="label_apply">APPLY</string>
     <string name="menu_lockmode">Lock Mode</string>
+    <string name="background_sync">Background Sync</string>
 </resources>