绑定服务与活动与片段

Question

我对绑定服务有疑问。我有父活动和几个片段，我绑定和解除绑定服务与活动，现在我可以访问片段中的服务吗？我需要在Fragments中使用ServiceConnection。

Answer 1

是的，您可以通过以下方式访问片段内的父活动服务：

getActivity().getMyService()

Answer 2

===========你的活动=================

    callbackFragmentServiceConnection callbackfragment;
        public interface callbackFragmentServiceConnection{
            public void servicefun(MusicPlayService musicPlayService);
        }

        public void registerClientFragment(Fragment fragment){

            this.callbackfragment = (callbackFragmentServiceConnection)fragment;

        }

/** Defines callbacks for service binding, passed to bindService() */
    private ServiceConnection mConnection = new ServiceConnection() {

        @Override
        public void onServiceConnected(ComponentName className,
                                       IBinder service) {

            mBound = true;


            callbackfragment.servicefun(musicPlayService);



        }

        @Override
        public void onServiceDisconnected(ComponentName arg0) {
            mBound = false;
        }
    };

=================在您的片段中=============

public class FragmentLibraryTrack extends Fragment implements 

    MainActivity.callbackFragmentServiceConnection {


        MainActivity mainActivity;
     @Override
        public void onAttach(Context context) {
            super.onAttach(context);
            mainActivity= (MainActivity) context;


        }

        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container,
                                 Bundle savedInstanceState) {
            mainActivity.registerClientFragment(this);

    }

    @Override
        public void servicefun(MusicPlayService musicPlayService) {
            Log.e("reached sucessfully","yes");
        }

    }