代码已经整理好，看下面~有一天你会用到的~不客气哈~
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//监听RecyclerView滚动状态mRecyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
@Override
public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
super.onScrollStateChanged(recyclerView, newState);
if(recyclerView.getLayoutManager() != null) {
getPositionAndOffset();
}
}
});/** * 记录RecyclerView当前位置
*/
private void getPositionAndOffset() {
LinearLayoutManager layoutManager = (LinearLayoutManager) mRecyclerView.getLayoutManager();
//获取可视的第一个view
View topView = layoutManager.getChildAt(0);
if(topView != null) {
//获取与该view的顶部的偏移量
lastOffset = topView.getTop();
//得到该View的数组位置
lastPosition = layoutManager.getPosition(topView);
}
}/** * 让RecyclerView滚动到指定位置
*/
private void scrollToPosition() {
if(mRecyclerView.getLayoutManager() != null && lastPosition >= 0) {
((LinearLayoutManager) mRecyclerView.getLayoutManager()).scrollToPositionWithOffset(lastPosition, lastOffset);
}
} |
本文转自 吴雨声 51CTO博客，原文链接：http://blog.51cto.com/liangxiao/1899155，如需转载请自行联系原作者