Question

我正在尝试实施酷炫的Firebase电子邮件链接登录功能，但尝试失败。我已成功设置发送电子邮件链接。但是，我无法通过电子邮件链接打开该应用程序。它只是打开预览页面，就像无法打开应用程序一样。

我已经测试了我设置的动态链接，可以在设备中打开该应用程序。我只是无法获得电子邮件链接来执行相同的操作。

我的应用中的代码：

func sendFirebaseEmailLink() {

    let actionCodeSettings = ActionCodeSettings.init()

    // userEmail comes from a textField
    let email = userEmail

    actionCodeSettings.url = URL.init(string: String(format: "https://<myappname>.firebaseapp.com/?email=%@", email))
    // The sign-in operation has to always be completed in the app.
    actionCodeSettings.handleCodeInApp = true
    actionCodeSettings.setIOSBundleID(Bundle.main.bundleIdentifier!)

    Auth.auth().sendSignInLink(toEmail: email,
        actionCodeSettings: actionCodeSettings) { error in

        if let error = error {
            print(error.localizedDescription)
            return
        }
        else {
            UserDefaults.standard.set(email, forKey: "Email")
            print("email sent to user")
        }
    }
}

当我说我已成功获取动态链接以打开该应用程序时，我的意思是当我在安装了该应用程序的设备上跟随我创建的链接（mylinkname.page.link/emaillogin）时，它将打开应用程式。因此，[此有用的Firebase视频] [1]设置了动态链接，似乎我已正确设置了这些详细信息，而问题出在代码中，但是我对此并不陌生，所以我不确定

我花了几天时间来解决这个问题，并尝试解析密集的Firebase文档，所以任何想法都将不胜感激。

Answer 1

我终于明白了。代码很好。这是与动态链接有关的问题。我在Firebase中设置了几个链接，因为我必须一次创建一个新的Bundle ID。当我在Firebase中删除旧版本时，电子邮件链接开始起作用。

它以这种方式显示在我的应用程序关联站点中，即使我删除了旧链接，它仍然奇怪地起作用，但至少现在可以了！

{“ applinks”：{“ apps”：[]，“ details”：[{“ appID”：“ TEAMID.com.OLDBUNDLEIDENTIFIER.APPNAME”，“路径”：[“ NOT / / *” ，“ / *”]}，{“ appID”：“ TEAMID.com.NEWBUNDLEIDENTIFIER.APPNAME”，“路径”：[“ NOT / / ”，“ / ”]} ]}}

更新：我用于实现无密码电子邮件登录的完整代码如下。使用文档整理起来使我很痛苦，因此希望可以省去您的麻烦。

假设您了解Firebase安装基础知识的关键步骤。

1）使用Firebase Video tutorial设置动态链接。

2）View Controller中的代码：

var userEmail: String?
var link: String?

func sendFirebaseEmailLink() {

    let actionCodeSettings = ActionCodeSettings.init()
    let email = userEmail
    actionCodeSettings.url = URL.init(string: String(format: "https://<myappname>.page.link/emaillogin/?email=%@", email!))
    // The sign-in operation has to always be completed in the app.
    actionCodeSettings.handleCodeInApp = true
    actionCodeSettings.setIOSBundleID(Bundle.main.bundleIdentifier!)

    Auth.auth().sendSignInLink(toEmail: email!,
        actionCodeSettings: actionCodeSettings) { error in

        if let error = error {
            print(error.localizedDescription)
            return
        }
        else {
            UserDefaults.standard.set(email, forKey: "Email")
            print("email sent to user")
        }

        // TODO: Notify user to check email and click the link.
    }
}

// Sign in user after they clicked email link called from AppDelegate
@objc func signInUserAfterEmailLinkClick() {

    // Get link url string from the dynamic link captured in AppDelegate.
    if let link = UserDefaults.standard.value(forKey: "Link") as? String {
        self.link = link
    }

    // Sign user in with the link and email.
    Auth.auth().signIn(withEmail: userEmail!, link: link!) { (result, error) in

        if error == nil && result != nil {

            if (Auth.auth().currentUser?.isEmailVerified)! {
                print("User verified with passwordless email")

                // TODO: Do something after user verified like present a new View Controller

            }
            else {
                print("User NOT verified by passwordless email")

            }
        }
        else {
            print("Error with passwordless email verfification: \(error?.localizedDescription ?? "Strangely, no error avaialble.")")
        }   
    }
}

3）AppDelegate中的代码

// For Passwordless Email Login to Handle Dynamic Link after User Clicks Email Link
func application(_ application: UIApplication, continue userActivity: NSUserActivity,
                 restorationHandler: @escaping ([UIUserActivityRestoring]?) -> Void) -> Bool {

    if let incomingURL = userActivity.webpageURL {
        print("Incoming URL is \(incomingURL)")

        // Parse incoming
        let linkHandled = DynamicLinks.dynamicLinks().handleUniversalLink(incomingURL) { (dynamicLink, error) in

            guard error == nil else {
                print("Found an error: \(error!.localizedDescription)")
                return
            }
            if let dynamicLink = dynamicLink {
                self.handleIncomingDynamicLink(dynamicLink)
            }
        }
        if linkHandled {
            return true
        }
        else {
            // Maybe do other things with dynamic links in future?
            return false
        }
    }
    return false
}

// Handles the link and saves it to userDefaults to assist with login.
func handleIncomingDynamicLink(_ dynamicLink: DynamicLink) {
    guard let url = dynamicLink.url else {
        print("My dynamic link object has no url")
        return
    }
    print("Incoming link parameter is \(url.absoluteString)")

    let link = url.absoluteString
    if Auth.auth().isSignIn(withEmailLink: link) {

        // Save link to userDefaults to help finalize login.
        UserDefaults.standard.set(link, forKey: "Link")

        // Send notification to ViewController to push the First Time Login VC
        NotificationCenter.default.post(
            name: Notification.Name("SuccessfulPasswordlessEmailNotification"), object: nil, userInfo: nil)
    }
}

Answer 2

iOS 13以上版本的提示：

如果您支持iOS 13+，则可能还需要将动态链接处理添加到SceneDelegate方法中：

func scene(_ scene: UIScene, continue userActivity: NSUserActivity)

在我只支持13岁以上的情况下，我的切入点是SceneDelegate，而我的func application(_ application: UIApplication, continue userActivity:并未受到打击。

See here for more info

Firebase无密码电子邮件身份验证无法在iOS上打开应用

2 个答案: