Android开发中如何实现一个应用程序开机自启动功能

<receiver android:enabled="true" android:name=".BootUpReceiver"
 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>
</receiver>

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