iOS無法識別的選擇器發送到實例錯誤

Question

我在LoginViewController添加一個按鈕。 這裏是LoginViewComtroller

loginButton?.addTarget(self, action: #selector(LoginViewController.wechatLogin), for: .touchDown) 

func wechatLogin() { 
    sendWXAuthRequest() 
} 

func sendWXAuthRequest() { 
    print("hello") 
    let req: SendAuthReq = SendAuthReq() 
    req.scope = "snsapi_userinfo,snsapi_base" 
    WXApi.send(req) 
} 

func onResp(_ resp: BaseResp!) { 
    print(resp) 
} 

代碼在這裏是代碼AppDelegate.swift

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool { 
     // Override point for customization after application launch. 
     //register 
     buildKeyWindow() 
     let right = WXApi.registerApp("My_Appid") 
     print(right) 
     return true 
    } 


    func application(_ application: UIApplication, handleOpen url: URL) -> Bool { 
     return WXApi.handleOpen(url, delegate: self) 
    } 


    func application(_ application: UIApplication, open url: URL, sourceApplication: String?, annotation: Any) -> Bool { 
     return WXApi.handleOpen(url, delegate: self) 
    } 

當我第一次運行該應用程序，有一個錯誤顯示，當我進入微信。 然後我第二次運行它，有一些錯誤，說「無法識別的選擇發送到實例」

Answer 1

嘗試在您棟設置Other Linker Flags改變-all_load到-force_load