#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
@@ -11,11 +12,18 @@ class MainActivity : FlutterActivity() {
 
         MethodChannel(binaryMessenger, "tech.lolli.toolbox/app_retain").apply {
             setMethodCallHandler { method, result ->
-                if (method.method == "sendToBackground") {
-                    moveTaskToBack(true)
-                    result.success(null)
-                } else {
-                    result.notImplemented()
+                when (method.method) {
+                    "sendToBackground" -> {
+                        moveTaskToBack(true)
+                        result.success(null)
+                    }
+                    "startService" -> {
+                        val intent = Intent(this@MainActivity, KeepAliveService::class.java)
+                        startService(intent)
+                    }
+                    else -> {
+                        result.notImplemented()
+                    }
                 }
             }
         }