Record ListView Scroll Stop position and set display location in Android project

The ListView control is frequently used in projects, and when you want to record records when scrolling is stopped, what happens when you click Load new data and start displaying from the location of the record? is divided into the following steps

1. Record Location Codes

[Java] View Plaincopy

1. //Declaration record stops scrolling when the visible position   

2. Private   int stop_position;

[Java] View Plaincopy

2. @Override   

4. public void onscrollstatechanged (Abslistview view, int Scrollstate) {

6. //TODO auto-generated method stub

8. //Determine if it is the last line and stop scrolling

10. if (islastrow && scrollstate = = onscrolllistener.scroll_state_idle) {

12. //Get visible location

14. Stop_position = Lv_categories.getfirstvisibleposition ();

16. //Determine if it is the last page

18. if (pageinfo.getnowpage () = Pageinfo.getcountpage ()) {

20. //query next page of data

22. categorymanager.queryobjects (pageinfo.getnowpage () + 1);

24. }

26. //Remember to change the logo to False

28. Islastrow = false  ;

30. }

34. }

38. @Override

40. public void onscroll (Abslistview view, int Firstvisibleitem,

42. int visibleitemcount, int totalitemcount) {

46. if ((Firstvisibleitem + visibleitemcount) >= totalitemcount) {

48. Islastrow = true  ;

50. }

54. }

2. Start the position again

[Java] View Plaincopy

1. To set the adapter for a ListView control

2. Lv_categories.setadapter (adapter);

3. Set the visible position of the ListView start

4. Lv_categories.setselection (stop_position);

5. 
   

Record ListView Scroll Stop position and set display location in Android project