不需要代码，新建一个工程，直接在 Info.plist 添加 NSUserActiveTypes ->INSendMessage，在WatchOS上启动App，就会在Mac 上出现 outlook handoff，在iOS上启动App，则不会出现outlook handoff。 No code required, create a new project and add NSUserActiveTypes ->INSendMessage directly to Info.plist. Launch the app on WatchOS, and Outlook Handoff will appear on Mac. Launch the app on iOS, and Outlook Handoff will not appear.

哈哈哈，已解决。Watch App启动后好像默认会激活info.plist->NSUserActiveTypes里的第一个，不要把INSendMessageIntent放在第一个，第一个放一个自定义的String。 Hahaha, it has been resolved. After the Watch App is launched, it seems that the first option in info. plst ->NSUserActiveTypes will be activated by default. Do not put INSEndMessage Intent in the first option, instead, place a custom String in the first option.