• 在AppDelegate中添加加载代码：

    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
        // Override point for customization after application launch.
#if DEBUG
Bundle(path: "/Applications/InjectionIII.app/Contents/Resources/iOSInjection.bundle")?.load()
//for tvOS:
//Bundle(path: "/Applications/InjectionIII.app/Contents/Resources/tvOSInjection.bundle")?.load()
//Or for macOS:
//Bundle(path: "/Applications/InjectionIII.app/Contents/Resources/macOSInjection.bundle")?.load()
#endif
        return true
    }

• 选中Target -> Build Settings -> 点亮All和Combined -> 搜索other linker -> 在Debug中先后添加-Xlinker和-interposable标志

• 选中Target -> 点击Build Settings -> 点击工具栏Editor -> Add Build Setting -> Add User-defined Setting添加设置EMIT_FRONTEND_COMMAND_LINES为YES

打开InjectionIIIApp -> Open Project -> Select Project directory to watch for file edits

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这样经过以上配运行项目修改文件就会热加载修改的代码了