来源：谷歌安全研究员 Ivn (@ivRodriguezCA) / Twitter TikTok snooping on users' pasteboard, so I had to take a look. Their main app's [YYTextView _initTextView] method:
... haha TikTok can handle all the URL schemes in the world. LSApplicationQueriesSchemes:


参与讨论的 tbodt 表示： it doesn't handle these schemes, it asks the system if something handles these schemes, so it can detect whether any of these apps are installed [谷歌翻译] 它不处理这些方案，而是询问系统是否有东西可以处理这些方案，因此它可以检测是否安装了这些应用程序