Question

当我尝试在setonclicklistener中调用方法loadSound时，声音不会出现，但是当我在onCreateView或onStart方法中调用它时，声音会出现，一切正常。有什么问题？有没有办法只在按下按钮时调用方法??

甚至我在setonclicklistener方法中调用了方法setOnLoadCompleteListener，但仍然没有帮助。

 public class InsectsFragment extends Fragment {

        private View view;

        private int mBeeSound;


        public InsectsFragment() {
            // Required empty public constructor
        }


        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container,
                                 Bundle savedInstanceState) {
            view= inflater.inflate(R.layout.fragment_insects, container, false);



            Sound.mSoundPool.setOnLoadCompleteListener(new SoundPool.OnLoadCompleteListener() {
                @Override
                public void onLoadComplete(SoundPool soundPool, int sampleId, int status) {
                    Sound.loaded = true;

                }
            });

            ImageButton beeBtn = (ImageButton) view.findViewById(R.id.imageButtonBee);

            beeBtn.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {

                    if (Sound.mStreamID > 0) {
                        Sound.mSoundPool.stop(Sound.mStreamID);
                    }
               mBeeSound = Sound.loadSound(getContext(), "bee.mp3");



                    if (Sound.loaded) {
                        Sound.playSound(mBeeSound);
                        Snackbar.make(view, R.string.Bee, Snackbar.LENGTH_SHORT).show();
                        Toast.makeText(view.getContext(), R.string.Bee, Toast.LENGTH_SHORT).show();
                    }

                }
            });

            return view;
        }

Answer 1

＆＃13;

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    view= inflater.inflate(R.layout.fragment_insects, container, false);

    ImageButton beeBtn = (ImageButton) view.findViewById(R.id.imageButtonBee);

    beeBtn.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {

            if (Sound.mStreamID > 0) {
                Sound.mSoundPool.stop(Sound.mStreamID);
            }


    Sound.mSoundPool.setOnLoadCompleteListener(new SoundPool.OnLoadCompleteListener() {
        @Override
        public void onLoadComplete(SoundPool soundPool, int sampleId, int status) {
            Sound.loaded = true;

            if (Sound.loaded) {
                Sound.playSound(mBeeSound);
                Snackbar.make(view, R.string.Bee, Snackbar.LENGTH_SHORT).show();
                Toast.makeText(view.getContext(), R.string.Bee, Toast.LENGTH_SHORT).show();
            }
        }
    });
       mBeeSound = Sound.loadSound(getContext(), "bee.mp3");
      }
        });

    return view;
}

＆＃13;

Answer 2

确保将正确的上下文传递给soundpool。在setclicklistener中，您可能正在传递侦听器的上下文。

为什么不能在btn.setonclicklistener方法中调用一个方法

2 个答案: