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ListView
mListView.setOnScrollListener(new OnScrollListener() {
@Override
public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
if (firstVisibleItem == 0) {
View firstVisibleItemView = mListView.getChildAt(0);
if (firstVisibleItemView != null && firstVisibleItemView.getTop() == 0) {
Log.d("ListView", "滚动到顶部");
}
} else if ((firstVisibleItem + visibleItemCount) == totalItemCount) {
View lastVisibleItemView = mListView.getChildAt(mListView.getChildCount() - 1);
if (lastVisibleItemView != null && lastVisibleItemView.getBottom() == mListView.getHeight()) {
Log.d("ListView", " 滚动到底部");
}
}
}
@Override
public void onScrollStateChanged(AbsListView view, int scrollState) {
//do nothing
}
})
RecyclerView
mRecyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
@Override
public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
//当前RecyclerView显示出来的最后一个的item的position
int lastPosition = -1;
//当前状态为停止滑动状态SCROLL_STATE_IDLE时
if(newState == RecyclerView.SCROLL_STATE_IDLE){
RecyclerView.LayoutManager layoutManager = recyclerView.getLayoutManager();
if(layoutManager instanceof GridLayoutManager){
//通过LayoutManager找到当前显示的最后的item的position
lastPosition = ((GridLayoutManager) layoutManager).findLastVisibleItemPosition();
}else if(layoutManager instanceof LinearLayoutManager){
lastPosition = ((LinearLayoutManager) layoutManager).findLastVisibleItemPosition();
}else if(layoutManager instanceof StaggeredGridLayoutManager){
//因为StaggeredGridLayoutManager的特殊性可能导致最后显示的item存在多个,所以这里取到的是一个数组
//得到这个数组后再取到数组中position值最大的那个就是最后显示的position值了
int[] lastPositions = new int[((StaggeredGridLayoutManager) layoutManager).getSpanCount()];
((StaggeredGridLayoutManager) layoutManager).findLastVisibleItemPositions(lastPositions);
lastPosition = findMax(lastPositions);
}
//时判断界面显示的最后item的position是否等于itemCount总数-1也就是最后一个item的position
//如果相等则说明已经滑动到最后了
if(lastPosition == recyclerView.getLayoutManager().getItemCount()-1){
showToast("mRecyclerView 滑动到底了");
}
}
}
@Override
public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
}
});