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

Source: Internet
Author: User

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. }

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