您好我正试图从Facebook检索我的电子邮件,因为我正在使用
swift播放facebook ios sdk.
IOS平台是10,swift 3和
Xcode 8.我在线跟踪教程,但无法检索电子邮件.
下面是我的代码：
if FBSDKAccessToken.current() == nil {
print("I got token")
let fbButton = FBSDKLoginButton()
fbButton.readPermissions = ["public_profile","email","user_friends"]
view.addSubview(fbButton)
fbButton.center = view.center
fbButton.delegate = self
self.fetchprofile()
}
else {
print("Dont have token")
let loginView : FBSDKLoginButton = FBSDKLoginButton()
self.view.addSubview(loginView)
loginView.center = self.view.center
loginView.readPermissions = ["public_profile","user_friends"]
loginView.delegate = self
}
func loginButton(_ loginButton: FBSDKLoginButton!,didCompleteWith result: FBSDKLoginManagerLoginResult!,error: Error!) {
if error != nil {
print(error.localizedDescription)
return
}
print("I'm in")
fetchprofile()
}
func fetchprofile() {
print("Getting profile")
let parameters = ["fields": "email"]
let graphRequest:FBSDKGraphRequest = FBSDKGraphRequest(graPHPath: "me",parameters: parameters,httpMethod: "GET")
graphRequest.start(completionHandler: {(connection,result,error) -> Void in
if error != nil {
print("Error retrieving details: \(error?.localizedDescription)")
return
}
guard let result = result as? [String:[AnyObject]],let email = result["email"] else {
return
}
print("Email: \(email)\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n")
self.view.backgroundColor = UIColor.red
})
}
在我的appdelegate.swift文件中：
//have both google and facebook signin. Google works but facebook doesn't
func application(_ app: UIApplication,open url: URL,options: [UIApplicationOpenURLOptionsKey : Any] = [:]) -> Bool {
return GIDSignIn.sharedInstance().handle(url,sourceApplication: options[UIApplicationOpenURLOptionsKey.sourceApplication] as! String,annotation: options[UIApplicationOpenURLOptionsKey.annotation]) ||
FBSDKApplicationDelegate.sharedInstance().application(app,open: url,annotation: options[UIApplicationOpenURLOptionsKey.annotation])
}
更新实际上,当我实际传递打印(电子邮件)时,我可以在控制台上看到它作为可选语句.我在没有可选参数的情况下显示它时遇到了麻烦
我用这种方式解决了这个问题：
func fetchProfile(){
FBSDKGraphRequest(graPHPath: "/me",parameters: ["fields" : "email,name,id,gender"])
.start(completionHandler: { (connection,error) in
guard let result = result as? NSDictionary,let email = result["email"] as? String,let user_name = result["name"] as? String,let user_gender = result["gender"] as? String,let user_id_fb = result["id"] as? String else {
return
}
})
}
