https://blog.wongcw.com/2020/08/19/ios-14-%e7%bf%bb%e8%ad%afapp-%e9%ab%94%e9%a9%97%ef%bc%9a%e8%98%8b%e6%9e%9c%e5%8e%9f%e7%94%9f%e6%87%89%e7%94%a8%e7%9a%84%e5%8f%88%e4%b8%80%e5%a4%a7%e6%ae%ba%e5%99%a8/