Android FCM Push Notification not received when app is closed

Question

I implemented FCM Push Notifications. The main problem is when app is closed, notifications not arrive when this happen on device.

I tried a lot of thigs for that works; when notification sent the server response with "success", but I never received.

This is full code. Android, Manifiest and server.

Android:

import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.graphics.drawable.BitmapDrawable;
import android.media.RingtoneManager;
import android.net.Uri;
import android.os.Bundle;
import android.support.v4.app.NotificationCompat;
import android.util.Log;
import com.accionait.canje365.R;
import com.accionait.canje365.activities.ChatActivity;
import com.accionait.canje365.activities.HomeActivity;
import com.accionait.canje365.constants.Constants;
import com.google.firebase.messaging.RemoteMessage;
import org.json.JSONException;
import org.json.JSONObject;
import org.json.JSONTokener;

public class FirebaseMessagingService extends com.google.firebase.messaging.FirebaseMessagingService {
    private static final String TAG = "FCM Service";

    @Override
    public void onMessageReceived(RemoteMessage remoteMessage) {
        super.onMessageReceived(remoteMessage);

        showNotification(remoteMessage);
    }

    private void showNotification(RemoteMessage remoteMessage) {
        Uri uriDefaultSound = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);

        NotificationCompat.Builder builder = new NotificationCompat.Builder(getApplicationContext())
        .setSmallIcon(R.mipmap.ic_notification)
        .setLargeIcon((((BitmapDrawable)getResources().getDrawable(R.mipmap.ic_notification)).getBitmap()))
        .setContentTitle("TITLE")
        .setContentText("MESSAGE")
        .setContentInfo("0")
        .setAutoCancel(true)
        .setTicker("Canje365")
        .setSound(uriDefaultSound);

        Intent home = new Intent(this, HomeActivity.class);
        home.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

        PendingIntent intent = PendingIntent.getActivity(this, 0, home, PendingIntent.FLAG_UPDATE_CURRENT);
        builder.setContentIntent(intent);

        NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
        notificationManager.notify(1, builder.build());
    }
}

Server:

var message = {
    to: token,
    data: {valor: 'test'}
};

fcm.send(message, function(err, response){  
    if(err) {
        console.log('Error: ' + err);
    } 
    else {
        console.log('Notificacion enviada: ', response);
    }
});

Manifiest:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.accionait.canje365">

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" />
<uses-permission android:name="android.permission.WAKE_LOCK" />

<application
    android:allowBackup="true"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:supportsRtl="true"
    android:theme="@style/AppTheme">

    <service android:name=".sync.RunIntentService" />
    <service android:name=".sync.FirebaseMessagingService">
        <intent-filter>
            <action android:name="com.google.firebase.MESSAGING_EVENT" />
        </intent-filter>
    </service>
    <service android:name=".sync.FirebaseIdService">
        <intent-filter>
            <action android:name="com.google.firebase.INSTANCE_ID_EVENT"/>
        </intent-filter>
    </service>

    <meta-data
        android:name="com.google.android.gms.version"
        android:value="@integer/google_play_services_version" />
    <meta-data
        android:name="com.google.android.geo.API_KEY"
        android:value="MY_API_KEY" />

    <activity
        android:name=".activities.MainActivity"
        android:theme="@style/SplashScreenTheme">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
         android:name=".activities.HomeActivity"
         android:label="@string/title_activity_login"
         android:screenOrientation="portrait">
    </activity>
</application>
</manifest>

What to do with this?

Answer 1

In my case I have a Huawei P8 Lite and to allow to be run on the background.

This is the link where You can to find detail abount this case.

Solution on Huawei devices

Answer 2

I faced the same problem. Its a problem in many phone models. I'm just writing this so that out there if anyone faces the same problem can waste a little less time searching for this problem because I wasted a lot! Android M and above devices have battery optimization enabled by default for all apps, which usually stops the background services of our apps. We just have to ask user to disable them, if user choose not to disable them, then I'm sorry..i don't think user is really happy with your app functionality. In order to ask user to enable that--->

Intent intent = new Intent();
        String packageName = getPackageName();
        PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            if (pm != null && pm.isIgnoringBatteryOptimizations(packageName))
                intent.setAction(Settings.ACTION_IGNORE_BATTERY_OPTIMIZATION_SETTINGS);
            else {
                intent.setAction(Settings.ACTION_REQUEST_IGNORE_BATTERY_OPTIMIZATIONS);
                intent.setData(Uri.parse("package:" + packageName));
            }
        }
        startActivity(intent);