How to get any identifier of the topmost activity?

by

This top part is outdated. See bottom for answer.

I’m assuming you’re referring to Activities within your own application:

All Activities call onResume() when coming to the foreground and onPause() when leaving the foreground. Simply override this method with your functionality (be sure to call super.onResume() and super.onPause() respectively!).

As for the identifier, perhaps you could make your Service have a static method that is called by an Activity coming to the foreground (in onResume()), supplying a reference to itself, its class, some arbitrary ID, etc.

Reference: http://developer.android.com/reference/android/app/Activity.html

Edit:

You can access the top Activity’s identity via ActivityManager -> running tasks -> ComponentName. Be sure to declare <uses-permission android:name="android.permission.GET_TASKS" /> in your manifest.

Context context = someArbitraryContext;
ActivityManager am = (ActivityManager) context.
    getSystemService(Activity.ACTIVITY_SERVICE);
String packageName = am.getRunningTasks(1).get(0).topActivity.getPackageName();
String className = am.getRunningTasks(1).get(0).topActivity.getClassName();

As for getting a notification, you’ll probably have to just check the top Activity every x milliseconds.

More Related Contents:

  1. OutOfMemoryError: bitmap size exceeds VM budget :- Android [duplicate]
  2. Finish an activity from another activity
  3. How to handle an AsyncTask during Screen Rotation?
  4. How can I change the color of AlertDialog title and the color of the line under it
  5. Android Volley – BasicNetwork.performRequest: Unexpected response code 400
  6. Get Path of image from ACTION_IMAGE_CAPTURE Intent
  7. How to make Android’s aapt and adb work on 64-bit Ubuntu without ia32-libs (works for versions 12, 13 and 14)
  8. How can I add an image on EditText
  9. How to get the Correct orientation of the image selected from the Default Image gallery
  10. How to open Email program via Intents (but only an Email program)
  11. ImageView be a square with dynamic width?
  12. How can I force the Action Bar to be at the bottom in ICS?
  13. App not run in visual studio emulator for android in visual studio 2015
  14. How can I use MS Visual Studio for Android Development?
  15. Android adb not found
  16. Processing more than one button click at Android Widget
  17. Failure [INSTALL_FAILED_INVALID_APK]
  18. How to send multiple images to server using MultipartEntity from android
  19. Obtain root access via su on the Android emulator
  20. How to change the font size of tabhost in android
  21. Finding current location of the user in Android
  22. How to store hashmap so that it can be retained it value after a device reboot?
  23. Mobile Chrome fires resize event on scroll
  24. How to get an enum which is created in attrs.xml in code
  25. Using Espresso to click view inside RecyclerView item
  26. Dynamically set parent activity
  27. How to style the divider between Ice Cream Sandwich tabs?
  28. Error: ADB exited with exit code 1 Performing Streamed Install
  29. Android Intent Chooser to only show E-mail option
  30. How to Get EditText maxLength setting in code

Leave a Comment