android - 如何在使用 setVisibility(View.GONE) 后重绘 TextView；

Question

我想知道如何在使用 view.GONE 后重新创建 View 。我需要使 textview 在向下滚动时消失，并在向上滚动后返回。我想我应该先找到它，然后呢？谢谢!这是我的代码(使用 fragment ):

@Override
public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
    if (view.getId() == listView.getId()) {
        final int currentFirstVisibleItem = listView.getFirstVisiblePosition();

        if (currentFirstVisibleItem > mLastFirstVisibleItem) {
            textView.setVisibility(View.GONE);
        } else if (currentFirstVisibleItem < mLastFirstVisibleItem) {
           TextView textView = (TextView) view.findViewById(R.id.textView);

                //what goes here?
        }

        mLastFirstVisibleItem = currentFirstVisibleItem;
    }
}

Answer 1

只需设置 setVisibility(View.VISIBLE);。试试这个方法。

if (currentFirstVisibleItem > mLastFirstVisibleItem) {
        textView.setVisibility(View.GONE);
    } else if (currentFirstVisibleItem < mLastFirstVisibleItem) {
       TextView textView = (TextView) view.findViewById(R.id.textView);

            textView.setVisibility(View.VISIBLE);
    }