https://blog.wongcw.com/2022/07/28/activitykit%e6%b8%ac%e8%a9%a6%e7%89%88%e7%99%bc%e5%b8%83ios%e9%8e%96%e5%b1%8f%e7%95%8c%e9%9d%a2%e8%bf%8e%e4%be%86%e6%9b%b4%e5%a4%9alive-activity%e5%b0%8f%e9%83%a8%e4%bb%b6/