Скачать или смотреть Navigating Back in Flutter with AutoRoute: Solving the popUntil Issue

Discover how to correctly navigate back to your desired route in Flutter using the AutoRoute package. Learn the intricacies of the `popUntil` method and avoid common pitfalls.
---
This video is based on the question https://stackoverflow.com/q/73661834/ asked by the user 'CodeR_Ax20' ( https://stackoverflow.com/u/16890320/ ) and on the answer https://stackoverflow.com/a/73671381/ provided by the user 'CodeR_Ax20' ( https://stackoverflow.com/u/16890320/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: pop until in flutter auto route package does not work

Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l...
The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license.

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
Navigating Back in Flutter with AutoRoute: Solving the popUntil Issue

When working on Flutter applications, navigation is a central feature that needs to be handled efficiently. If you're using the AutoRoute package and find that the popUntil function isn't behaving as expected, you're not alone. Let's walk through the problem and arrive at the solution together.

Understanding the Problem

Suppose you have a simple Flutter app with two screens: HomeRoute and ProductsRoute. After successfully navigating to ProductsRoute, you perform an API call in the initState method. If an error occurs, you want to show a pop-up alert with the message "Something went wrong!" and subsequently navigate back to HomeRoute.

Here's the challenge: your existing code attempts to navigate back using the following line:

[[See Video to Reveal this Text or Code Snippet]]

However, executing this leads you to a confusing white screen instead of the anticipated HomeRoute. On the other hand, if you use context.router.pop() twice, it works. So where's the error?

The Solution

The key to resolving the issue lies in understanding how the popUntil function operates. Instead of referencing HomeRoute directly in popUntil, you need to refer to the route that exists just before HomeRoute in the stack.

Understanding the Route Stack

To illustrate:

Route Stack: ScreenA -> ScreenB -> ScreenC -> ScreenD

To navigate back to ScreenA from ScreenD, you should target ScreenB directly.

The correct implementation should look like this:

[[See Video to Reveal this Text or Code Snippet]]

The Mistake

You may be tempted to attempt returning to ScreenA directly:

[[See Video to Reveal this Text or Code Snippet]]

This leads to unexpected behavior, such as landing on a blank screen, due to the way the route stack is managed in Flutter.

Conclusion

To sum up, when navigating back to a specific route using AutoRoute, always ensure you target the appropriate route in the stack that directly precedes your desired destination. This approach not only simplifies your navigation logic but also enhances user experience by preventing unexpected white screens.

By incorporating these insights into your Flutter app with AutoRoute, you'll ensure smoother transitions and a more intuitive flow in your application. Happy coding!