ListView addHeaderView和addFooterView使用上的一些问题

 1 public class SomeViewGroup extends FrameLayout {
 2 
 3         ...
 4 
 5     public void setOnLoadMoreListener(OnLoadMoreListener onLoadMoreListener) {
 6 
 7         mOnLoadMoreListener = onLoadMoreListener;
 8 
 9         LayoutInflater mInflater = (LayoutInflater) getContext()
10                 .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
11         loadMoreLayout = (ViewGroup) mInflater.inflate(
12                 R.layout.list_load_more_layout, this);
13         loadMoreLayout.setOnClickListener(loadMoreClickListener);
14         loadMoreText = (TextView) loadMoreLayout
15                 .findViewById(R.id.load_more_textview);
16         moreProgressBar = (ProgressBar) loadMoreLayout
17                 .findViewById(R.id.load_more_progressbar);
18         loadMoreText.setVisibility(View.GONE);
19         mainList.addFooterView(loadMoreLayout);
20 
21     }
22 
23         ...
24 
25 }        

 1     void resetList() {
 2         // The parent's resetList() will remove all views from the layout so we need to
 3         // cleanup the state of our footers and headers
 4         clearRecycledState(mHeaderViewInfos);
 5         clearRecycledState(mFooterViewInfos);
 6 
 7         super.resetList();
 8 
 9         mLayoutMode = LAYOUT_NORMAL;
10     }
11 
12     private void clearRecycledState(ArrayList<FixedViewInfo> infos) {
13         if (infos != null) {
14             final int count = infos.size();
15 
16             for (int i = 0; i < count; i++) {
17                 final View child = infos.get(i).view;
18                 final LayoutParams p = (LayoutParams) child.getLayoutParams();
19                 if (p != null) {
20                     p.recycledHeaderFooter = false;
21                 }
22             }
23         }
24     }