1 lvMaster.setOnScrollListener(
new ScrollListener() {
2 @Override
3 public void onScrollStateChanged(AbsListView absListView,
int i) {
4 super.onScrollStateChanged(absListView, i);
5 }
6
7 @Override
8 public void onScroll(AbsListView absListView,
int firstVisibleItem,
int visibleItemCount,
int totalItemCount) {
9 super.onScroll(absListView, firstVisibleItem, visibleItemCount, totalItemCount);
10 View animView;
11 for (
int i = 0; i < visibleItemCount; i++
) {
12 animView =
lvMaster.getListView().getChildAt(i);
13 if (animView ==
null) {
14 continue;
15 }
16 if (getScroll(lvMaster.getListView()) <= 0 && visibleItemCount == 1
) {
17 ViewHelper.setAlpha(animView, 1f);
18 }
else {
19 if(animView.getBottom()<=
lvMaster.getListView().getBottom()){
20 ViewHelper.setAlpha(animView, 1f);
21 }
22 else {
23 ViewHelper.setAlpha(animView, 0f);
24 }
25 }
26 }
27 }
28 });
滑动事件
1 protected int getScroll(ListView listview) {
2 int scrollY = 0
;
3 View c = listview.getChildAt(0);
//this is the first visible row
4 if(c !=
null){
5 scrollY = -
c.getTop();
6 return scrollY;
7 }
8 }
getScroll
转载于:https://www.cnblogs.com/YyuTtian/p/5366647.html
