How to know if my application is in foreground or background, android?

Question

I need to check if my application is running in background or foreground and then perform some operations relatively to it.

I searched a lot and a clear solution is not available.

1. Make a parent activity in its onPause() and onResume() methods keep some variable to update them accordingly. When you create any new activity inherit your parent activity. Although this is the best solution I feel to achieve my task, but sometimes if the power button is clicked even though application is in background, it's onResume() is invoked.

2. Use GETTASKS permission - This solution is also good. But it can only used for debug purpose. Not if you want to put your app on Google Play Store.

Get Running Taks

Any other preferred solution for this?

Answer 1

Well this solved my issue:

  private boolean isAppOnForeground(Context context,String appPackageName) {
    ActivityManager activityManager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
    List<ActivityManager.RunningAppProcessInfo> appProcesses = activityManager.getRunningAppProcesses();
    if (appProcesses == null) {
        return false;
    }
    final String packageName = appPackageName;
    for (ActivityManager.RunningAppProcessInfo appProcess : appProcesses) {
        if (appProcess.importance == ActivityManager.RunningAppProcessInfo.IMPORTANCE_FOREGROUND && appProcess.processName.equals(packageName)) {
 //                Log.e("app",appPackageName);
            return true;
        }
    }
    return false;
}