How to Add Custom URL Parameters on Redirects in WKWebView using Swift

Описание: Learn how to append parameters to URLs during redirects in WKWebView in Swift. This guide covers the necessary steps and code examples.
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This video is based on the question https://stackoverflow.com/q/62267208/ asked by the user 'rizzz86' ( https://stackoverflow.com/u/867475/ ) and on the answer https://stackoverflow.com/a/62282432/ provided by the user '4u Don' ( https://stackoverflow.com/u/13713370/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Handling URL Redirects in WKWebView with Custom Parameters

If you're developing an iOS app using Swift and you are working with WKWebView, you may run into a situation where you want to add custom parameters to a URL during a redirect. This can be essential for tracking, altering the content dynamically, or controlling navigation based on specific criteria. In this guide, we'll dive into how to achieve this using Swift.

The Problem

Imagine you have an app that navigates through various web pages using a WKWebView. Your requirement is to append a specific parameter to the URL each time a redirect occurs from one page to another. The main confusion comes when handling the navigation actions to modify the URL before allowing the navigation to proceed. Here's the key function you'll work with:

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In this function, we'll capture the redirect event and modify the URL accordingly. Let’s explore how to do this step by step.

The Solution

Step 1: Setting Up the WKWebView

Firstly, ensure that your view controller conforms to the WKNavigationDelegate protocol and that the WKWebView is properly instantiated and loaded with your desired URL.

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Step 2: Modifying the URL on Redirect

Now, implement the delegate method to check if the navigation action leads to a specific URL path that you wish to modify. If it does, you will create a new URL by appending the necessary parameters.

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Key Points to Remember

WKNavigationDelegate: Use this protocol to manage the navigation actions within WKWebView.

URLComponents: This is a handy struct that helps manipulate and build URLs easily.

Decision Handler: Always call the decision handler after processing the navigation action to either allow or cancel the navigation.

Conclusion

By following the steps outlined in this post, you can efficiently append parameters to URLs during redirects in WKWebView. This not only enhances your app's functionality but also boosts your control over navigation within your application. Practice these concepts to see how they can affect your app structure and user experience positively.

Feel free to experiment with different URL paths and parameters to suit your needs! Happy coding!