Run code when Android app is closed/sent to background

Question

I have an Android application which sends some data to a webservice. I need to send this data as soon as the application is closed or sent to background.. But how do I accomplish this?

My current solution is to run it on the OnPause() on my home activity, but I need this to run no matter which activity the user is on when closing the app.. Is this possible or do I have to add the OnPause method to all activities?

Answer 1

Check this solution first https://stackoverflow.com/a/5862048/1037294 before you decide to use the code below!

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To check if your application is sent to background, you can call this code on onPause() or onStop() on every activity in your application:

 /**    * Checks if the application is being sent in the background (i.e behind    * another application's Activity).    *     * @param context the context    * @return <code>true</code> if another application will be above this one.    */   public static boolean isApplicationSentToBackground(final Context context) {     ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);     List<RunningTaskInfo> tasks = am.getRunningTasks(1);     if (!tasks.isEmpty()) {       ComponentName topActivity = tasks.get(0).topActivity;       if (!topActivity.getPackageName().equals(context.getPackageName())) {         return true;       }     }      return false;   } 

For this to work you should include this in your AndroidManifest.xml

<uses-permission android:name="android.permission.GET_TASKS" /> 

Answer 2

Edit

This answer only serves for one purpose, that is, running a code in onPause() for all activities. It doesn't let you run a code when your app is sent to background.

Original Answer

Make an Activity named YourBasicActivity and override its onPause() method and extend every Activity from YourBasicActivity