android - 如何在滚动时显示 View 并在android中滚动停止后隐藏 View

Question

我有一个线性布局 View ，布局底部有一些按钮。布局包含很多元素，所以我添加了 ScrollView 来显示所有内容。

现在，当我向上或向下滚动时，我想隐藏我底部的线性布局内容，一旦用户停止滚动 ListView ，我想再次显示它。

任何人都可以建议我一些解决方案来实现这一目标。任何帮助都是适当的谢谢

Answer 1

您可以尝试实现ScrollView 的OnScrollListener。它有一个方法:

        /**
         * Callback method to be invoked while the list view or grid view is being scrolled. If the
         * view is being scrolled, this method will be called before the next frame of the scroll is
         * rendered. In particular, it will be called before any calls to
         * {@link Adapter#getView(int, View, ViewGroup)}.
         *
         * @param view The view whose scroll state is being reported
         *
         * @param scrollState The current scroll state. One of {@link #SCROLL_STATE_IDLE},
         * {@link #SCROLL_STATE_TOUCH_SCROLL} or {@link #SCROLL_STATE_IDLE}.
         */
        public void onScrollStateChanged(AbsListView view, int scrollState);

当滚动状态改变时，您可以setVisibility() 到您想要显示/隐藏的Button。