Can request to disable battery optimisation

android/app/src/main/AndroidManifest.xml

@@ -8,6 +8,7 @@
     <!-- These permissions are required to make video calls (WebRTC) -->
     <uses-feature android:name="android.hardware.camera" />
     <uses-feature android:name="android.hardware.camera.autofocus" />
+
     <uses-permission android:name="android.permission.CAMERA" />
     <uses-permission android:name="android.permission.RECORD_AUDIO" />
     <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
@@ -25,29 +26,32 @@
         </intent>
     </queries>
 
+    <!-- This is required for independent push notifications service to work
+            (when FCM service can not be used) -->
+    <uses-permission android:name="android.permission.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS" />
+
     <!-- io.flutter.app.FlutterApplication is an android.app.Application that
          calls FlutterMain.startInitialization(this); in its onCreate method.
          In most cases you can leave this as-is, but you if you want to provide
          additional functionality it is fine to subclass or reimplement
          FlutterApplication and put your custom class here. -->
     <application
-        android:label="Comunic"
         android:icon="@mipmap/ic_launcher"
+        android:label="Comunic"
         android:roundIcon="@mipmap/ic_launcher_round"
         tools:ignore="GoogleAppIndexingWarning">
 
 
-
         <meta-data
             android:name="flutterEmbedding"
             android:value="2" />
 
         <activity
             android:name=".MainActivity"
-            android:launchMode="singleTop"
-            android:theme="@style/LaunchTheme"
             android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
             android:hardwareAccelerated="true"
+            android:launchMode="singleTop"
+            android:theme="@style/LaunchTheme"
             android:windowSoftInputMode="adjustResize">
             <!-- This keeps the window background of the activity showing
                  until Flutter renders its first frame. It can be removed if
@@ -56,8 +60,7 @@
 
             <meta-data
                 android:name="io.flutter.embedding.android.NormalTheme"
-                android:resource="@style/NormalTheme"
+                android:resource="@style/NormalTheme" />
-                />
 
             <!-- Specify that the launch screen should continue being displayed -->
             <!-- until Flutter renders its first frame. -->
@@ -66,8 +69,8 @@
                 android:resource="@drawable/launch_background" />
 
             <intent-filter>
-                <action android:name="android.intent.action.MAIN"/>
+                <action android:name="android.intent.action.MAIN" />
-                <category android:name="android.intent.category.LAUNCHER"/>
+                <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
 
@@ -75,6 +78,6 @@
         <activity
             android:name="com.yalantis.ucrop.UCropActivity"
             android:screenOrientation="portrait"
-            android:theme="@style/Theme.AppCompat.Light.NoActionBar"/>
+            android:theme="@style/Theme.AppCompat.Light.NoActionBar" />
     </application>
 </manifest>

android/app/src/main/java/org/communiquons/comunic/MainActivity.java

@@ -18,6 +18,9 @@ public class MainActivity extends FlutterActivity {
         super.configureFlutterEngine(flutterEngine);
 
         new MethodChannel(flutterEngine.getDartExecutor().getBinaryMessenger(), INDEPENDENT_NOTIFICATIONS_CHANNEL)
-        .setMethodCallHandler(new NotificationsChannel());
+                .setMethodCallHandler(new NotificationsChannel(this));
+
     }
+
+
 }

android/app/src/main/java/org/communiquons/comunic/independentnotifications/NotificationsChannel.java

@@ -1,15 +1,30 @@
 package org.communiquons.comunic.independentnotifications;
 
+import android.annotation.SuppressLint;
+import android.app.Activity;
+import android.content.Context;
+import android.content.Intent;
+import android.net.Uri;
+import android.os.PowerManager;
+import android.provider.Settings;
+
 import androidx.annotation.NonNull;
 
 import io.flutter.plugin.common.MethodCall;
 import io.flutter.plugin.common.MethodChannel;
 
 public class NotificationsChannel implements MethodChannel.MethodCallHandler {
+    private final Context context;
+
+    public NotificationsChannel(Activity context) {
+        this.context = context.getApplicationContext();
+    }
+
     @Override
     public void onMethodCall(@NonNull MethodCall call, @NonNull MethodChannel.Result result) {
         try {
 
+
             if (call.method.equals("preConfigure"))
                 preConfigure(result);
 
@@ -25,7 +40,19 @@ public class NotificationsChannel implements MethodChannel.MethodCallHandler {
     /**
      * Pre-configure notifications service
      */
-    private static void preConfigure(@NonNull MethodChannel.Result result) throws Exception {
+    private void preConfigure(@NonNull MethodChannel.Result result) throws Exception {
-        System.out.println("Ready to pre-configure !");
+        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.M) {
+            if (!context.getSystemService(PowerManager.class).isIgnoringBatteryOptimizations(context.getPackageName())) {
+                @SuppressLint("BatteryLife")
+                Intent intent = new Intent(Settings.ACTION_REQUEST_IGNORE_BATTERY_OPTIMIZATIONS,
+                        Uri.parse("package:" + context.getPackageName()));
+                intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+
+                context.startActivity(intent);
             }
+        }
+
+        result.success(null);
+    }
+
 }