Android开发【06-02疑问贴】怎么不能开机自启

public class BootStart extends BroadcastReceiver
{
@Override
public void onReceive(Context p1, Intent p2)
{
// TODO: Implement this method
Intent intent = new Intent(p1,MainActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
p1.startActivity(intent);
}
}