How to add custom notification in android app

Create and Display Notification on Android with Example

import android.app.NotificationManager; import android.app.PendingIntent; import android.content.Intent; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.support.v7.app.NotificationCompat; import android.view.View; import android.widget.Button; public class NotficationtestActivity extends AppCompatActivity { NotificationCompat.Builder notification; private static final int appuniqueID = 10012; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_notficationtest); notification = new NotificationCompat.Builder(this); notification.setAutoCancel(true); Button btnNotification = (Button) findViewById(R.id.btnNotificationttest); btnNotification.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { //Build the notification notification.setSmallIcon(R.drawable.photo); notification.setTicker("Ticker"); notification.setWhen(System.currentTimeMillis()); notification.setContentTitle("TechProgrammingIdeas"); notification.setContentText("Added new video. Subscribe my channel"); Intent intent = new Intent(NotficationtestActivity.this,NotficationtestActivity.class); PendingIntent pendingIntent = PendingIntent.getActivity(NotficationtestActivity.this,0,intent,PendingIntent.FLAG_UPDATE_CURRENT); notification.setContentIntent(pendingIntent); //Builds notification and issue it NotificationManager nm = (NotificationManager) getSystemService(NOTIFICATION_SERVICE); nm.notify(appuniqueID,notification.build()); } }); } }

More Details - https://developer.android.com/guide/topics/ui/notifiers/notifications