Android判斷當前應用是否運行在后台

判斷當前應用是否運行在后台

public static boolean isApplicationInBackground(Context context) {
            ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
            List<ActivityManager.RunningTaskInfo> taskList = am.getRunningTasks(1);
            if (taskList != null && !taskList.isEmpty()) {
                ComponentName topActivity = taskList.get(0).topActivity;
                if (topActivity != null && !topActivity.getPackageName().equals(context.getPackageName())) {
                    return true;
                }
            }
            return false;
        }