获取栈顶Activity

   ActivityManager am = (ActivityManager) sContext.getSystemService(Context.ACTIVITY_SERVICE);
            List<ActivityManager.RunningTaskInfo> tasks = am.getRunningTasks(1);
            if (!tasks.isEmpty()) {
                String mActivityName = tasks.get(0).topActivity.getClassName();
                }
            }

来源：CSDN

作者：码大帅

链接：https://blog.csdn.net/qq_33240707/article/details/103490767