向下滚动时使用ListView隐藏fab按钮[重复]

Question

如何在滚动 listView 时隐藏 fab 按钮？

我目前正在使用此代码，但每当我触摸屏幕和滚动时它会隐藏 FAB 按钮，我需要它在滚动时隐藏 FAB 按钮向下和向上滚动时必须再次显示

当前代码：

mListView.setOnScrollListener(new AbsListView.OnScrollListener() {
        @Override
        public void onScrollStateChanged(AbsListView view, int scrollState) {
            if(scrollState == SCROLL_STATE_TOUCH_SCROLL){
                floatingActionButton.hide();
            }else{
                floatingActionButton.show();
            }
        }

        @Override
        public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
        }
    });

Answer 1

试试这个你应该使用onScroll而不是onScrollStateChanged

listview.setOnScrollListener(new AbsListView.OnScrollListener() {
    @Override
    public void onScrollStateChanged(AbsListView view, int scrollState) {


    }

    @Override
    public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {

        // add here your logic like this
        // int lastItem = firstVisibleItem + visibleItemCount;
        if (firstVisibleItem < 2) {

            floatingActionButton.setVisibility(View.INVISIBLE);
        }else {
            floatingActionButton.setVisibility(View.VISIBLE);
        }
    }
});