查出的ListView滚动至底部？ [英] Find out if ListView is scrolled to the bottom?

问题描述

我可以看看我的ListView滚动至底部？我的意思是，最后一个项目是完全可见。

Can I find out if my ListView is scrolled to the bottom? By that I mean that the last item is fully visible.

推荐答案

编辑

由于我一直在调查在我的应用程序之一这个特殊的问题，我可以写这个问题未来的读者扩展的答案。

Since I have been investigating in this particular subject in one of my applications, I can write an extended answer for future readers of this question.

实施的 OnScrollListener ，设置的ListView 的 onScrollListener 键，那么你应该能够正确地处理事情。

Implement an OnScrollListener, set your ListView's onScrollListener and then you should be able to handle things correctly.

例如：

private int preLast;
// Initialization stuff.
yourListView.setOnScrollListener(this);

// ... ... ...

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

    switch(lw.getId()) {
        case android.R.id.list:     

            // Make your calculation stuff here. You have all your
            // needed info from the parameters of this function.

            // Sample calculation to determine if the last 
            // item is fully visible.
             final int lastItem = firstVisibleItem + visibleItemCount;
           if(lastItem == totalItemCount) {
              if(preLast!=lastItem){ //to avoid multiple calls for last item
                Log.d("Last", "Last");
                preLast = lastItem;
              }
           }
    }
}

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