Question

我想知道我的滚动条指向哪个listview项目，以便当我点击滚动条图像时，我可以显示与listview项目相关的弹出窗口

@Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        //getWindow().requestFeature(Window.FEATURE_ACTION_BAR);
        setContentView(R.layout.list);

        list=(ListView)findViewById(R.id.list);
        adapter=new LazyAdapter(this, mStrings);
        list.setAdapter(adapter);

    }

public View getView(int position, View convertView, ViewGroup parent) {
        View vi=convertView;
        if(convertView==null)
            vi = inflater.inflate(R.layout.item, null);
        TextView text=(TextView)vi.findViewById(R.id.text);;
        ImageView image=(ImageView)vi.findViewById(R.id.image);
        text.setText("itemitemitemitemitemitemitemitemitemitemitemitemititemitemitemmitetemitemitemitemitemitememitemitemitemiitemitemitemitem "+position);
        imageLoader.DisplayImage(data[position], image);
        return vi;
    }

Answer 1

您需要实现listview的onScroll方法，如下所示：

YOURLISTVIEW.setOnScrollListener(new OnScrollListener() {

        @Override
        public void onScrollStateChanged(AbsListView view, int scrollState) {
                  //Inside this method you can calculate and can found current position
        }

        @Override
        public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
                  //Inside this method you can calculate and can found current position, here you have firstVisibleitem and total visible item count, so I think using it, you can calculate current position.

        }
    });

Answer 2

如果您使用OnItemClickListener，我认为会更好。当您点击某个位置时，您将确切知道该项目的位置。

列表滚动条指向的视图项目

2 个答案: