Question

我有这样的服务：

public MyService extends Service {

    // ...

    IBinder binder = new MyBinder();

    @Override
    public IBinder onBind(Intent intent) {
        return binder;
    }

    public class MyBinder extends Binder {

        public MyService getService() {
            return MyService.this;
        }
    }

    // ...
}

在Activity中我收到Binder从而得到Service实例，之后我可以访问它的所有方法。我想知道，那样做是否安全？或者我应该只通过Binder界面与服务进行交互？谢谢！

Answer 1

在Activity中我收到Binder从而得到Service实例，之后我可以访问它的所有方法。我想知道，是否安全那样的吗？或者我应该只通过Binder与服务进行交互接口

Binder是返回的内容，您只需转换为您知道的Service类。你正在做的方式只是使用Binder ......

你完成它的方式通常是如何完成的。这是直接从这里找到的“官方”样本中获取的“本地服务”模式：http://developer.android.com/resources/samples/ApiDemos/src/com/example/android/apis/app/LocalService.html在您的Service类上调用方法的其他方法非常hacky（相信我，我之前已经尝试过）。

示例：

private ServiceConnection mConnection = new ServiceConnection() {
        public void onServiceConnected(ComponentName className, IBinder service) {
            // This is called when the connection with the service has been
            // established, giving us the service object we can use to
            // interact with the service.  Because we have bound to a explicit
            // service that we know is running in our own process, we can
            // cast its IBinder to a concrete class and directly access it.
            myService = ((MyService.LocalBinder)service).getService();



        }

        public void onServiceDisconnected(ComponentName className) {
            // This is called when the connection with the service has been
            // unexpectedly disconnected -- that is, its process crashed.
            // Because it is running in our same process, we should never
            // see this happen.

        }
    };

在Binder界面中返回服务实例是否安全？

1 个答案: