Autostart our application when android device start from bootup

when you power on the device open our application starts.
through receiver we can achieve this one .

Androidmenifest.xml
 <receiver android:enabled="true" android:name=".Startourapp"
        android:permission="android.permission.RECEIVE_BOOT_COMPLETED">

        <intent-filter>
                <action android:name="android.intent.action.BOOT_COMPLETED" />
                <category android:name="android.intent.category.DEFAULT" />
        </intent-filter>

Startourapp.class

public class Startourapp extends BroadcastReceiver{
    @Override
    public void onReceive(Context context, Intent intent) {
            Intent i = new Intent(context, MainActivity.class);
            i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
               context.startActivity(i);  
    }

}