Keep the current position of the listview.

Keep the current position of the listview.

Keep the position of the listview slide. It is generally used to add comments in the listview sub-item layout or exit the current activity.

 

Use ListView. getFirstVisiblePosition () to obtain the position of the first Item currently visible, and set it in the rolling listener.

@ Override public void onScroll (AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {this. firstVisibleItem = firstVisibleItem; this. lastVisibleItem = firstVisibleItem + visibleItemCount; this. totalItemCount = totalItemCount;} @ Override public void onScrollStateChanged (AbsListView view, int scrollState) {this. scrollState = scrollState; if (scrollState = AbsListView. onScrollListener. SCROLL_STATE_IDLE) {position = this. getFirstVisiblePosition (); // obtain the index number in the total number of entries in the list. View firstVisibleItem = this. getChildAt (0); // obtain the first item in the visible list scrolledY = firstVisibleItem. getTop (); // obtain the position of the first list item relative to the top of the screen }}

Position and scrolledY are stored and called at key locations.

 listView.setSelectionFromTop(position, scrolledY);(api 21)

Call the previous method to restore the current position of the listview.