Question

我对Java还是比较陌生，希望能提供一些帮助。我试图在一个片段中使用方法（handleSelection方法），但该方法似乎不起作用，而是强调未使用该方法。

public class TrendingFragment extends Fragment {



    Song selectedSong;

    public void handleSelection(View view)
    {
        String resourceId = AppUtil.getResourceId(getActivity(),view);

        selectedSong = songCollection.searchById(resourceId);

        AppUtil.popMessage(getActivity(), "Streaming song: " + selectedSong.getTitle());

        sendDataToActivity(selectedSong);
    }

    public void sendDataToActivity (Song song)
    {
        Intent intent = new Intent(getActivity(), PlaySongActivity.class);

        intent.putExtra("id", song.getId());
        intent.putExtra("title", song.getTitle());
        intent.putExtra("artist", song.getartist());
        intent.putExtra("fileLink" ,song.getFileLink());
        intent.putExtra("coverArt", song.getCoverArt());

        startActivity(intent);
    }




    private SongCollection songCollection = new SongCollection();
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState)

    {
        View v = inflater.inflate(R.layout.fragment_trending, container, false);


        return v;
    }

}

Answer 1

基于注释，您需要实现按钮的功能。我假设Button在Fragment的视图内。这应该是您的oncreateview函数。

View v = inflater.inflate(R.layout.fragment_trending, container, false);
button = findViewById(R.id...):
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                handleSelection(view);

            }
        });

return v;

您需要在Fragment中实现一个按钮变量，然后为按钮输入正确的ID

未在片段中调用的方法

1 个答案: