Push Notification Android Firebase 2018

FirebaseInstantIdService.java - 

package com.cryptobites.service;

import com.google.firebase.iid.FirebaseInstanceId;
import com.google.firebase.iid.FirebaseInstanceIdService;


public class FirebaseInstantIdService extends FirebaseInstanceIdService {

    private static String refreshedToken;

    @Override    public void onTokenRefresh() {
        super.onTokenRefresh();
        refreshedToken = FirebaseInstanceId.getInstance().getToken();
    }

    public static String getFirebaseId() {

        return  refreshedToken;

    }
}

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FirebaseNotificationService.java:-

package com.cryptobites.service;


import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Intent;
import android.content.SharedPreferences;
import android.support.v4.app.NotificationCompat;

import com.cryptobites.view.activity.HomeActivity;
import com.cryptobites.view.activity.LoginActivity;
import com.cryptobites.R;
import com.cryptobites.view.activity.HomeActivity;
import com.cryptobites.view.activity.LoginActivity;
import com.google.firebase.messaging.FirebaseMessagingService;
import com.google.firebase.messaging.RemoteMessage;

public class FirebaseNotificationService extends FirebaseMessagingService {

    @Override    public void onMessageReceived(RemoteMessage remoteMessage) {

        showNotification(remoteMessage.getNotification().getBody());
    }


    public void showNotification(String string)
    {
        SharedPreferences sharedPreferences= getSharedPreferences("id",MODE_PRIVATE);
        String user_id =  sharedPreferences.getString("user_id","");

        if(user_id.isEmpty()){
            PendingIntent pendingIntent = PendingIntent.getActivity(this,0,new Intent(this, LoginActivity.class),0);
            Notification notification = new NotificationCompat.Builder(this)
                    .setSmallIcon(R.drawable.ic_launcher)
                    .setContentTitle("Cryptobites")
                    .setContentText(string)
                    .setContentIntent(pendingIntent)
                    .setAutoCancel(true)
                    .build();
            NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
            notificationManager.notify(0,notification);
        }

        else {
            PendingIntent pendingIntent = PendingIntent.getActivity(this,0,new Intent(this, HomeActivity.class),0);
            Notification notification = new NotificationCompat.Builder(this)
                    .setSmallIcon(R.drawable.ic_launcher)
                    .setContentTitle("Cryptobites")
                    .setContentText(string)
                    .setContentIntent(pendingIntent)
                    .setAutoCancel(true)
                    .build();
            NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
            notificationManager.notify(0,notification);
        }

    }
}

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AndroidManifest.xml:-

<service    android:name=".service.FirebaseInstantIdService">
    <intent-filter>
        <action android:name="com.google.firebase.INSTANCE_ID_EVENT"/>
    </intent-filter>
</service>

<service    android:name=".service.FirebaseNotificationService">
    <intent-filter>
        <action android:name="com.google.firebase.MESSAGING_EVENT"/>
    </intent-filter>
</service>
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implementation 'com.google.firebase:firebase-messaging:17.3.4'

implementation 'com.google.firebase:firebase-core:16.0.6'


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