OnServiceConnected没有得到所谓的 [英] OnServiceConnected not getting called

问题描述

我下文称<一个href=\"http://stackoverflow.com/questions/6008601/cant-get-service-object-onserviceconnected-never-called\">Can't让服务对象（onServiceConnected从来不叫），<一个href=\"http://stackoverflow.com/questions/11844920/onserviceconnected-not-getting-called-getting-a-null-pointer-exception\">onServiceConnected没有得到所谓的，得到一个空指针异常和<一个href=\"http://stackoverflow.com/questions/2486692/onserviceconnected-never-called-after-bindservice-method\">onServiceConnected bindService方法后就再也没打来电话，没有找到答案。

I reffered Can't get service object (onServiceConnected never called) , onServiceConnected not getting called , getting a null pointer exception and onServiceConnected never called after bindService method and not found answer.

这是我的code

@Override
    public void onStart() {
        super.onStart();
        Context context = getApplicationContext();
        Intent intent = new Intent(context, PodService.class);
        context.bindService(intent, mPodServiceConn, Context.BIND_AUTO_CREATE);

    }




    private ServiceConnection mPodServiceConn = new ServiceConnection() {
                @Override
                public void onServiceConnected(ComponentName className, IBinder service) {
                    Log.e(TAG, "Pod: Service Connected");
                  mPodService = IPodService.Stub.asInterface(service); //here i am getting NullPointerException
                }
        }

和我的服务类包含什么都没有，只有这个了，我已经展示了它吼叫

and My service class contains nothing, only this much, i have shown it bellow

public class PodService extends Service {
@Override
    public IBinder onBind(Intent intent) {
        // TODO Auto-generated method stub
        Log.d("bound", "bound");
        return null;
    }

 static class PodSeviceStub extends IPodService.Stub {

//here i implemented unimplemented methods

    }
}

但在lolcat我只收到约束从onBind消息（）函数，而不是印刷波德：服务连接，是指服务启动成功。
在lolcat我收到 NullPointerException异常，并在清单文件中也提到过。

But in lolcat i am getting only "bound" message from onBind() function, but not printing "Pod: Service Connected", means service is started successfully. and in lolcat i am getting NullPointerException and also mentioned in manifest file too.

推荐答案

我改写了服务类，这样onBind（）返回的IBinder为follwos。

I rewrote the service class so that onBind() returns IBinder as follwos.

public class PodService extends Service {
@Override
    public IBinder onBind(Intent intent) {

        Log.d("bound", "bound");
        return mBinder; // returns IBinder object
    }

    private final IBinder mBinder = new PodSeviceStub(this);

 static class PodSeviceStub extends IPodService.Stub {

         WeakReference<PodService> mService;

        public PodSeviceStub(PodService service) {// added a constructor for Stub here
            mService = new WeakReference<PodService>(service);
        }
//here i implemented unimplemented methods

    }
}

和现在的作品。

这篇关于OnServiceConnected没有得到所谓的的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！