调用ServiceManager的构造函数的时候，mConn没构造出来，这是怎么回事

public class ServiceManager implements IConstants{

public IMediaService mService;
private Context mContext;
private ServiceConnection mConn;
private IOnServiceConnectComplete mIOnServiceConnectComplete;

public ServiceManager(Context context){
    this.mContext = context;
    System.out.println("serMan");
    initConn();
}

private void initConn(){
    mConn = new ServiceConnection() {

        @Override
        public void onServiceDisconnected(ComponentName name) {
            // TODO Auto-generated method stub

        }

        @Override
        public void onServiceConnected(ComponentName name, IBinder service) {
            System.out.println("onServiceConnected");
            mService = IMediaService.Stub.asInterface(service);
            if(mService != null){
                mIOnServiceConnectComplete.onServiceConnectionComplete(mService);
            }
        }
    };
}

http://www.cnblogs.com/kevincode/p/3868870.html

debug跟一下，乍一看没发现哪里有问题