Display Notification - Android Studio

How to Display Notification in android using Android Studio?

In this tutorial we will learn how to display a notification when button is clicked. When button is clicked the notification will be displayed. When the notification is clicked we will open some Activity.

Step 1: Create a new project OR Open your project

Step 2: Place an icon in drawable folder

Step 3: Code

activity_main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"android:padding="10dp"tools:context=".MainActivity" > <Button android:id="@+id/btnShowNotif" android:text="Show Notification" android:layout_width="match_parent" android:layout_height="wrap_content" /></LinearLayout>

MainActivity.java

package com.blogspot.devofandroid.myapplication;import android.app.NotificationManager;import android.app.PendingIntent;import android.app.TaskStackBuilder;import android.content.Context;import android.content.Intent;import android.os.Bundle;import android.support.v4.app.NotificationCompat;import android.support.v7.app.AppCompatActivity;import android.view.View;import android.widget.Button;public class MainActivity extends AppCompatActivity {Button mBtnShowNoti;NotificationCompat.Builder mBuilder;NotificationManager mNotificationManager;PendingIntent mResultPendingIntent;TaskStackBuilder mStackBuilder;Intent mResultIntent;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);mBtnShowNoti = findViewById(R.id.btnShowNotif);mBuilder = new NotificationCompat.Builder(this);mBuilder.setSmallIcon(R.mipmap.ic_launcher_round);mBuilder.setContentTitle("Notification Title");mBuilder.setContentText("This is Notification detail...");mResultIntent = new Intent(this , MainActivity.class);mStackBuilder = TaskStackBuilder.create(this);mStackBuilder.addParentStack(MainActivity.class);// Adds the Intent that will start the Activity to the top of stackmStackBuilder.addNextIntent(mResultIntent);mResultPendingIntent = mStackBuilder.getPendingIntent(0 ,PendingIntent.FLAG_UPDATE_CURRENT);mBuilder.setContentIntent(mResultPendingIntent);mNotificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);mBtnShowNoti.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View view) {// notificationID allows you to update the notification later on.mNotificationManager.notify(1 , mBuilder.build());}});}}

Step 4: Output