Android 5.0 (including versions earlier than 5.0) obtains the top-stack application package name and android package name.

Android 5.0 (including versions earlier than 5.0) obtains the top-stack application package name and android package name.

1. /**
2. * Get the package name (available in both versions)
3. *
4. * @ Return
5. */
6. Public String getTaskPackname (){
7. ActivityManager. RunningAppProcessInfo currentInfo = null;
8. Field field = null;
9. Int START_TASK_TO_FRONT = 2;
10. String currentApp = "CurrentNULL ";
11. If (android. OS. Build. VERSION. SDK_INT> = android. OS. Build. VERSION_CODES.LOLLIPOP ){
12. Try {
13. Field = ActivityManager. RunningAppProcessInfo. class. getDeclaredField ("processState ");
14. } Catch (Exception e ){
15. E. printStackTrace ();
16. }
17. ActivityManager am = (ActivityManager) mContext. getSystemService (Context. ACTIVITY_SERVICE );
18. List <RunningAppProcessInfo> appList = am. getRunningAppProcesses ();
19. For (ActivityManager. RunningAppProcessInfo app: appList ){
20. If (app. importance = ActivityManager. RunningAppProcessInfo. IMPORTANCE_FOREGROUND ){
21. Integer state = null;
22. Try {
23. State = field. getInt (app );
24. } Catch (Exception e ){
25. E. printStackTrace ();
26. }
27. If (state! = Null & state = START_TASK_TO_FRONT ){
28. CurrentInfo = app;
29. Break;
30. }
31. }
32. }
33. If (currentInfo! = Null ){
34. CurrentApp = currentInfo. processName;
35. }
36. } Else {
37. ActivityManager am = (ActivityManager) mContext. getSystemService (Context. ACTIVITY_SERVICE );
38. List <ActivityManager. RunningAppProcessInfo> tasks = am. getRunningAppProcesses ();
39. CurrentApp = tasks. get (0). processName;
40. }
41. Log. e ("TAG", "Current App in foreground is:" + currentApp );
42. Return currentApp;
43. }