Java Android Program to Demonstrate Pending Intent

Here is source code of the Program demonstrate a Pending Intent in Android. The program is successfully compiled and run on a Windows system using Eclipse Ide. The program output is also shown below.

The PendingIntent class provides a mechanism for creating Intents that can be fired on your application’s behalf by another application at a later time. A Pending Intent is commonly used to package Intents that will be fired in response to a future event, such as a Widget or Notification being clicked.

Main Activity

 
package com.example.alert_broadcast_receiver;
 
import android.os.Bundle;
import android.app.Activity;
import android.app.AlarmManager;
import android.app.PendingIntent;
import android.content.Intent;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
 
public class MainActivity extends Activity {
 
      @Override
        protected void onCreate(Bundle savedInstanceState) {
             super.onCreate(savedInstanceState);
             setContentView(R.layout.activity_main);
             Button b1 = (Button) findViewById(R.id.button1);
             b1.setOnClickListener(new View.OnClickListener() {
                 @Override
                  public void onClick(View v) {
                      // TODO Auto-generated method stub
                        startAlert(v);
                  }
		});
	}
 
	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
                 getMenuInflater().inflate(R.menu.main, menu);
                 return true;
	}
 
	public void startAlert(View view) {
                EditText text = (EditText) findViewById(R.id.editText1);
                int time = Integer.parseInt(text.getText().toString());
                Intent intent = new Intent(this, MyReceiver.class);
                PendingIntent pend_intent = PendingIntent.getBroadcast(
                            this.getApplicationContext(), 0, intent, 0);
		//calls the alarm
                 AlarmManager alarmManager = (AlarmManager) getSystemService(
                                        ALARM_SERVICE);
                 alarmManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis()
                   + (time * 10000), pend_intent);
	}
}

MyReceiver

 
package com.example.alert_broadcast_receiver;
 
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.widget.Toast;
 
public class MyReceiver extends BroadcastReceiver{
 
	@Override
	public void onReceive(Context context, Intent intent) {
		// TODO Auto-generated method stub
                  Toast.makeText(context, "Times Up!!!!", Toast.LENGTH_LONG).show();
	}
 
}

Activity_Main.xml

 
<RelativeLayout 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:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >
 
    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentRight="true"
        android:layout_marginBottom="172dp"
        android:text="Start" />
 
    <EditText
        android:id="@+id/editText1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/button1"
        android:layout_alignParentTop="true"
        android:layout_alignRight="@+id/button1"
        android:layout_marginTop="63dp"
        android:ems="10" />
 
</RelativeLayout>

AndroidManifest.xml

 
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.alert_broadcast_receiver"
    android:versionCode="1"
    android:versionName="1.0" >
 
    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="17" />
 
    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.example.alert_broadcast_receiver.MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
 
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
 
        <receiver android:name="MyReceiver" >
        </receiver>
    </application>
 
</manifest>

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