Скачать или смотреть Easily Check Google Authentication Status in Your iOS App with Swift 5

Discover how to handle user authentication by checking Google login status in your iOS app using Swift 5.
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How to Check Google Authentication Status in Your iOS App (Swift 5)

When developing an iOS application that connects to Google services, one common challenge is how to manage user authentication effectively. In this post, we'll explore how to check a user's Google authentication status in your iOS app using Swift 5. This functionality is essential to enhance the user experience, allowing them to navigate seamlessly to different parts of your app based on their authentication state.

Understanding the Problem

You have users who authenticate with Google, and you'd like to record their authentication status. The goal is to manage what happens when they interact with your app—for instance, by tapping on a cell in a table view. If they are authenticated, you want to honor that by navigating them to a designated view. If they are not authenticated, you want them redirected to the authorization page. However, you might face issues where the authentication status only updates after the application is restarted.

A Step-by-Step Approach to Solve the Problem

Here’s how you can effectively manage Google authentication status for users in your iOS app, using Swift 5.

Step 1: Saving Authentication State

The root of the issue in your current implementation is that the variable tracking the authentication state (isAuthenticationComplete) is an instance variable. This means it gets reset every time a new instance of SourcesViewController is created. To resolve this, you should make use of UserDefaults to persist this state.

Implementation

Add the following code to your sign-in method to save the user's authentication state when they successfully log in:

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Step 2: Checking Authentication State

Next, you will need to check if the user has been authorized whenever they try to access a certain feature of your app. You can do that by checking the value stored in UserDefaults.

Implementation

In your didSelectRowAt method, adjust the logic to include the check for the stored authentication state:

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Step 3: Logging Out

You should also ensure that the user's state is correctly updated when they log out. When the log-out button is pressed, you will clear their authentication status and reset your UserDefaults entry.

Implementation

Update your log-out action as follows:

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Testing Your Implementation

After implementing these changes, you should test the functionality thoroughly:

Sign in: Ensure the user is directed to the correct view upon signing in.

Sign out: Confirm that the user is redirected back to the authorization page when logging out.

State Persistence: Verify that even after restarting your app, the user's authentication status reflects accurately.

Conclusion

By following these steps, you can successfully manage user authentication in your iOS applications using Swift 5. Utilizing UserDefaults effectively allows you to maintain the user's authentication status across app sessions, ensuring a smoother user experience.

For further discussions or inquiries about Google authentication in iOS apps, feel free to reach out!