Android - How to track app Resumes only when you exit and come back to the app?

Question

I have an issue. For analytic purposes I need to track when the APP (not activity) is resumed. The problem I have now is that if I put the tracker on the OnResume event of an activity, it will get fired every time the user goes back and forth on different activities.

How can I avoid that? How can I track the real "Application Resume," (when user actually exits the app and come back) and not the activity resume?

Any ideas is greatly appreciated. Thanks.

Answer 1

I encountered the same problem and solved it by creating base activity :

public class mActivity extends Activity{

    public static final String TAG = "mActivity";

    public static int activities_num = 0;


    @Override
    protected void onStop() {
        super.onStop();
        activities_num--;
        if(activities_num == 0){
            Log.e(TAG,"user not longer in the application");
        }
    }


    @Override
    protected void onStart() {
        super.onStart();
        activities_num++;
    }
}

all the other activities in my app inherited mActivity. When an activity is no longer visible than onStop is called. when activities_num == 0 than all activities are not visible (meaning the the user close the app or it passed to the background). When the user start the application (or restarting it from the background) onStart will be called (onStart is called when the activity is visible) and activities_num > 0. hopes it helps...