ios - Swift 3 为 facebook 登录返回 "Type of expression is ambiguous without more context"错误

Question

我是 Swift 的新手，遇到 [.publicProfile] 的错误。

Type of expression is ambiguous without more context error

代码:

let loginManager = LoginManager()
    loginManager.loginBehavior = LoginBehavior.native;
    loginManager.logIn([.publicProfile], viewController: self) { (loginResult) in
        switch loginResult {
        case .failed(let error):
            print(error)
        case .cancelled:
            print("User cancelled login.")
        case .success(let grantedPermissions, let declinedPermissions, let accessToken):
            print("Logged in \(grantedPermissions) \(declinedPermissions) \(accessToken)")
        }
    }

方法签名:

loginManager.logIn(<#T##permissions: [ReadPermission]##[ReadPermission]#>, viewController: <#T##UIViewController?#>, completion: <#T##((LoginResult) -> Void)?##((LoginResult) -> Void)?##(LoginResult) -> Void#>)

Answer 1

在最近更新的 FacebookLogin API 中，您应该在第一个参数之前添加参数名称:

loginManager.logIn(readPermissions: [ .publicProfile], ...