#139 fix

android/app/src/main/AndroidManifest.xml

@@ -55,5 +55,7 @@
                 android:name="android.appwidget.provider"
                 android:resource="@xml/home_widget" />
         </receiver>
+
+        <service android:name=".KeepAliveService"/>
     </application>
 </manifest>

android/app/src/main/kotlin/tech/lolli/toolbox/KeepAliveService.kt

@@ -0,0 +1,18 @@
+package tech.lolli.toolbox
+
+import android.app.Service
+import android.content.Intent
+
+import android.os.IBinder
+import org.jetbrains.annotations.Nullable
+
+class KeepAliveService : Service() {
+    override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
+        return START_STICKY
+    }
+
+    @Nullable
+    override fun onBind(intent: Intent?): IBinder? {
+        return null
+    }
+}

android/app/src/main/kotlin/tech/lolli/toolbox/MainActivity.kt

@@ -1,5 +1,6 @@
 package tech.lolli.toolbox
 
+import android.content.Intent
 import io.flutter.embedding.android.FlutterActivity
 import io.flutter.embedding.engine.FlutterEngine
 import io.flutter.plugin.common.MethodChannel
@@ -11,13 +12,20 @@ class MainActivity : FlutterActivity() {
 
         MethodChannel(binaryMessenger, "tech.lolli.toolbox/app_retain").apply {
             setMethodCallHandler { method, result ->
-                if (method.method == "sendToBackground") {
+                when (method.method) {
+                    "sendToBackground" -> {
                         moveTaskToBack(true)
                         result.success(null)
-                } else {
+                    }
+                    "startService" -> {
+                        val intent = Intent(this@MainActivity, KeepAliveService::class.java)
+                        startService(intent)
+                    }
+                    else -> {
                         result.notImplemented()
                     }
                 }
             }
         }
+    }
 }

lib/main.dart

@@ -6,6 +6,7 @@ import 'package:logging/logging.dart';
 import 'package:macos_window_utils/window_manipulator.dart';
 import 'package:provider/provider.dart';
 import 'package:shared_preferences/shared_preferences.dart';
+import 'package:toolbox/data/res/misc.dart';
 import 'package:toolbox/view/widget/custom_appbar.dart';
 
 import 'app.dart';
@@ -92,8 +93,13 @@ Future<void> initApp() async {
   final settings = locator<SettingStore>();
   loadFontFile(settings.fontPath.fetch());
 
-  // SharedPreferences is only used on Android for saving home widgets settings.
+  // Android only
   if (!isAndroid) return;
+  // Only start service when [bgRun] is true.
+  if (locator<SettingStore>().bgRun.fetch() ?? false) {
+    bgRunChannel.invokeMethod('startService');
+  }
+  // SharedPreferences is only used on Android for saving home widgets settings.
   SharedPreferences.setPrefix('');
 }