Notification Handling

This example shows how you can send and clear notification messages.

Algorithm:

1.) Create a new project by File-> New -> Android Project name it NotificationHandling.

2.) Write following into main.xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Send/clear notification"
/>
<Button
android:id="@+id/fire1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Notification 1"
/>
<Button
android:id="@+id/fire2"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Notification 2 "
/>
<Button
android:id="@+id/clear1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Clear Notification 1"
/>

<Button
android:id="@+id/clearall"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Clear ALL Notification"
/>
</LinearLayout>

3.) Run for output.

Steps:

1.) Create a project named NotificationHandling and set the information as stated in the image.

Build Target: Android 4.4
Application Name: NotificationHandling
Package Name: com.example. NotificationHandling
Activity Name: NotificationHandlingActivity

2.) Open NotificationHandlingActivity.java file and write following code there:

package com.example.notificationhandling;

import android.app.Activity;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class NotificationHandlingActivity extends Activity {

private static final int ID_My_Notification_1 = 1;
private static final int ID_My_Notification_2 = 2;

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button buttonFire1 = (Button)findViewById(R.id.fire1);
Button buttonFire2 = (Button)findViewById(R.id.fire2);
Button buttonClear1 = (Button)findViewById(R.id.clear1);
Button buttonClearAll = (Button)findViewById(R.id.clearall);
buttonFire1.setOnClickListener(buttonFire1OnClickListener);
buttonFire2.setOnClickListener(buttonFire2OnClickListener);
buttonClear1.setOnClickListener(buttonClear1OnClickListener);
buttonClearAll.setOnClickListener(buttonClearAllOnClickListener);
}

private Button.OnClickListener buttonClearAllOnClickListener
= new Button.OnClickListener(){

@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
String ns = Context.NOTIFICATION_SERVICE;
NotificationManager mNotificationManager = (NotificationManager)getSystemService(ns);
mNotificationManager.cancelAll();
}};

private Button.OnClickListener buttonClear1OnClickListener
= new Button.OnClickListener(){

@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
clearNotification(ID_My_Notification_1);
}};

private Button.OnClickListener buttonClear2OnClickListener
= new Button.OnClickListener(){

@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
clearNotification(ID_My_Notification_2);
}};

private void clearNotification(int notification_id){
String ns = Context.NOTIFICATION_SERVICE;
NotificationManager mNotificationManager = (NotificationManager)getSystemService(ns);
mNotificationManager.cancel(notification_id);
}

private Button.OnClickListener buttonFire1OnClickListener
= new Button.OnClickListener(){

@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
fireNotification(ID_My_Notification_1);
}};

private Button.OnClickListener buttonFire2OnClickListener
= new Button.OnClickListener(){

@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
fireNotification(ID_My_Notification_2);
}};

private void fireNotification(int notification_id){
//Get a reference to the NotificationManager
String ns = Context.NOTIFICATION_SERVICE;
NotificationManager mNotificationManager = (NotificationManager)getSystemService(ns);

//Instantiate the Notification
int icon = android.R.drawable.ic_dialog_alert;
CharSequence tickerText = "Hello" + String.valueOf(notification_id);
long when = System.currentTimeMillis();

Notification notification = new Notification(icon, tickerText, when);

//Define the Notification's expanded message and Intent
Context context = getApplicationContext();
CharSequence contentTitle = "My Notification" + String.valueOf(notification_id);
CharSequence contentText = "Hello My Notification!" + String.valueOf(notification_id);
//Intent notificationIntent = new Intent(AndroidStatusBarNotifications.this, AndroidStatusBarNotifications.class);
Intent notificationIntent = new Intent(getBaseContext(), NotificationHandlingActivity.class);
PendingIntent contentIntent = PendingIntent.getActivity(NotificationHandlingActivity.this, 0, notificationIntent, 0);

notification.setLatestEventInfo(context, contentTitle, contentText, contentIntent);

//Pass the Notification to the NotificationManager
mNotificationManager.notify(notification_id, notification);

}
}

3.) Compile and build the project.

Output