Скачать или смотреть How to Use go_router in Flutter to Pass Data from a List View to a Detail Page

Learn how to effectively pass data between pages in Flutter using the `go_router` package. This post provides practical examples and solutions for navigating from a list view to a detailed post page.
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This video is based on the question https://stackoverflow.com/q/75849722/ asked by the user 'ngqh' ( https://stackoverflow.com/u/16586472/ ) and on the answer https://stackoverflow.com/a/75849869/ provided by the user 'Amirali Eric Janani' ( https://stackoverflow.com/u/8388842/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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How to Use go_router in Flutter to Pass Data from a List View to a Detail Page

Navigating between pages within a Flutter application is a common requirement, especially when you want to pass data from one view to another. In this post, we will discuss how you can use the go_router package to pass the title of a clicked item from a list view to a detailed post page.

The Problem

Imagine you have a list of posts displayed in a ListView, and you want to allow users to tap on any post to see more detailed information about it. However, you might be unsure about how to effectively pass the title of the selected post to the detail page.

The Solution

Setting Up the Route

First, you need to define your route for the detail page using the GoRoute. Here’s how you can do it:

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

In this code snippet:

We define a path that includes parameters for title and description.

The builder function takes the title from the state.params and passes it to the DetailedPost widget.

Creating the Post Card Widget

Next, we will create a widget for the individual post cards. This widget allows the user to tap on a post and navigate to the detail page. Here’s how the widget looks:

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

Handling Tap Events

For navigating to the detailed post, you need to implement the tap event. This is where we pass the title of the clicked post using the go_router. Here's how you can do that:

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

In the above code:

Replace the ... with any additional parameters you wish to pass (e.g., a description). If you don’t have a description, it can be left as an empty string or omitted if your route supports it.

Retrieving the Title in the Detail Page

Once you have navigated to the DetailedPost page, you can retrieve the title you passed earlier. The following code snippet shows how you can access it:

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

In this code:

The questionTitle variable is populated with the title you passed from the PostCard.

You can then use this variable to display the post’s details.

Conclusion

By following these steps, you can seamlessly pass data from a list view to a detailed page using the go_router package in Flutter. This approach enhances your application's navigation experience, allowing users to quickly access detailed information about posts.

Happy coding! If you have any questions or need further clarification, feel free to ask.