Start Activity When Boot Completed

public class mReceiver extends BroadcastReceiver {

    @Override 
    public void onReceive(Context context, Intent intent) {
        if (intent.getAction().equals(Intent.ACTION_BOOT_COMPLETED)) {
            Log.d("tag", "boot ok"); 
            Intent i = new Intent(context, sampleActivity.class); 
            i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 
            context.startActivity(i); 
        } 
    } 
}

Need Uses Permission : android.permission.RECEIVE_BOOT_COMPLETED