Broadcast Receiver-launch application on reboot of Device

In Previous post I have listed some broadcast action.In this post I will use one of broadcast action.
Sometimes we require to launch application whenever user restart device.We can achieve this using broadcast receiver.Through following application I have expalin how to launch application on device reboot.

Auto Start Application :

Required Steps :
1.Create SampleActivity which will be launcher activity of application.:


package com.androindu;
import android.app.Activity;
import android.os.Bundle;

public class SampleActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
}

2.Create Broadcast Receiver.which will receive  reboot action of device:
   I have override onReceive() method, where I have started launcher activity of application.

package com.androindu;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;

public class LaunchAppBroadcast extends BroadcastReceiver {

@Override
public void onReceive(Context context, Intent intent) {
// TODO Auto-generated method stub
Intent intent2 = new Intent(context, SampleActivity.class);
intent2.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(intent2);

}

}


3.Edit Manifest file and register Broadcast receiver for "android.intent.action.BOOT_COMPLETED" action.

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.androindu"
android:versionCode="1"
android:versionName="1.0">
<application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name=".SampleActivity"
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="LaunchAppBroadcast"
android:permission="android.permission.RECEIVE_BOOT_COMPLETED">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED"/>
</intent-filter>
</receiver>

</application>

<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"></uses-permission>
</manifest>


Layout file 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"
android:gravity="center"
>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Launch on reboot of device"
/>
</LinearLayout>

Thus
     
Summary :
With this post we can get idea about  how to use Broadcast receiver.