当用户通过 FB 登录按钮完成授权时,我正在使用 Coordinator(符合 LoginButtonDelegate)对象来接收用户数据(个人资料、姓名)。Coordinator().userId 属性使用用户 ID 进行更新,但我需要将其传递到 LoginView 1 级并更新名为 thisSession 的 EnvironmentObject(以某种方式使 thisSession.userId = Coordinator().userId)。
有没有办法做到这一点?我尝试使用 ObservableObject/Published 属性,但我无法从 Coordinator 更新父对象的属性。
另一个想法是订阅 Auth.auth() 更改,但它似乎太复杂而且有点“老派”的解决方案。有一些我想念的简单方法。
任何提示/想法?
import SwiftUI
import FirebaseCore
import FirebaseAuth
import FBSDKLoginKit
import FBSDKCoreKit
struct LoginView: View {
@EnvironmentObject var thisSession: CurrentSession
@ObservedObject var mainData = MainViewModel()
var facebookView = facebook()
var body: some View {
VStack {
facebookView.frame(width: 240, height: 50)
Text("\(self.thisSession.userId ?? "none")")
}
}
}
struct LoginView_Previews: PreviewProvider {
static var previews: some View {
LoginView().environmentObject(CurrentSession())
}
}
struct facebook: UIViewRepresentable {
@EnvironmentObject var thisSession: CurrentSession
@ObservedObject var coordinator = Coordinator()
func makeCoordinator() -> facebook.Coordinator {
return self.coordinator
//facebook.Coordinator()
}
func makeUIView(context: UIViewRepresentableContext<facebook>) -> FBLoginButton {
let button = FBLoginButton()
button.delegate = self.coordinator
print("UPDATED")
return button
}
func updateUIView(_ uiView: FBLoginButton, context: UIViewRepresentableContext<facebook>) {
}
class Coordinator: NSObject, LoginButtonDelegate, ObservableObject {
@Published var userId: String?
func loginButton(_ loginButton: FBLoginButton, didCompleteWith result: LoginManagerLoginResult?, error: Error?) {
if error != nil{
print((error?.localizedDescription)!)
return
}
if AccessToken.current != nil{
let credential = FacebookAuthProvider.credential(withAccessToken: AccessToken.current!.tokenString)
Auth.auth().signIn(with: credential) { (res,er) in
if er != nil{
print((er?.localizedDescription)!)
return
}
print("email: \(String(describing: res?.user.email))")
print("name: \(String(describing: res?.user.displayName))")
self.userId = String(describing: res?.user.displayName)
}
}
}
func loginButtonDidLogOut(_ loginButton: FBLoginButton) {
print("logged out")
try! Auth.auth().signOut()
}
}
}