How to send foreground push notifications in Android

In this android programming source code example, we are going to send foreground push notifications in Android.

You can copy and adopt this source code example to your android project without reinventing the wheel.

Below is a step by step source code to send foreground push notifications in Android.

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".DeviceFeatures.DeviceFeaturesActivity12">

    <TextView
        android:id="@+id/fcmToken"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Fcm token"
        android:gravity="center"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintBottom_toBottomOf="parent"/>

</androidx.constraintlayout.widget.ConstraintLayout>

MainActivity.java

import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.util.Log;
import android.widget.TextView;

import com.bluapp.androidview2.R;
import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.Task;
import com.google.firebase.iid.FirebaseInstanceId;
import com.google.firebase.iid.InstanceIdResult;

public class DeviceFeaturesActivity12 extends AppCompatActivity {
    private TextView fcmToken;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_device_features12);
        fcmToken = (TextView) findViewById(R.id.fcmToken);
        FirebaseInstanceId.getInstance().getInstanceId()
                .addOnCompleteListener(new OnCompleteListener<InstanceIdResult>() {
                    @Override
                    public void onComplete(@NonNull Task<InstanceIdResult> task) {
                        if (task.isSuccessful()) {
                            String token = task.getResult().getToken();
                            fcmToken.setText("Fcm Token: "+token);
                            Log.d("AndroidView2", "Fcm Token: "+token);
                        }
                    }
                });
    }
}

MyFirebaseMessagingService.java

import android.app.NotificationManager;
import android.content.Context;
import android.media.RingtoneManager;
import android.util.Log;

import androidx.core.app.NotificationCompat;

import com.bluapp.androidview2.R;
import com.google.firebase.messaging.FirebaseMessagingService;
import com.google.firebase.messaging.RemoteMessage;

public class MyFirebaseMessagingService extends FirebaseMessagingService {
    @Override
    public void onMessageReceived(RemoteMessage remoteMessage) {
        super.onMessageReceived(remoteMessage);
        if (remoteMessage.getData().size() > 0) {
            Log.d("AndroidView2", "Message data payload: " + remoteMessage.getData());
        }

        if (remoteMessage.getNotification() != null) {
            NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this, "AndroidView2")
                    .setContentTitle(remoteMessage.getNotification().getTitle())
                    .setContentText(remoteMessage.getNotification().getBody())
                    .setPriority(NotificationCompat.PRIORITY_DEFAULT)
                    .setStyle(new NotificationCompat.BigTextStyle())
                    .setSound(RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION))
                    .setSmallIcon(R.mipmap.ic_launcher)
                    .setAutoCancel(true);
            NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
            notificationManager.notify(0, notificationBuilder.build());
            Log.d("AndroidView2", "Message Notification Title: "+remoteMessage.getNotification().getTitle()+" Message Notification Body: "+remoteMessage.getNotification().getBody());
        }

    }
}

AndroidManifest.xml

<service android:name=".DeviceFeatures.MyFirebaseMessagingService">
            <intent-filter>
                <action android:name="com.google.firebase.MESSAGING_EVENT" />
            </intent-filter>
        </service>

build.gradle

implementation 'com.google.firebase:firebase-core:17.0.1'
implementation 'com.google.firebase:firebase-messaging:19.0.1'

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