Скачать или смотреть Flutter Named Routes Navigation for Popup Dialogs

Discover how to implement named routes in `Flutter` for different device types, enabling popup dialogs for tablets and regular windows for smartphones.
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This video is based on the question https://stackoverflow.com/q/64126121/ asked by the user 'proninyaroslav' ( https://stackoverflow.com/u/5994250/ ) and on the answer https://stackoverflow.com/a/77064744/ provided by the user 'boby dhorajiya' ( https://stackoverflow.com/u/21678628/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Implementing Named Routes Navigation for Popup Dialogs in Flutter

When developing applications with Flutter, one common challenge developers face is how to effectively handle navigation—particularly when it comes to displaying different types of windows based on the device being used. A user posed a question about the best way to implement named routes for navigation between popup dialogs and regular windows. This post delves into this problem and presents a clear solution.

The Problem

The user needed a way to show a regular window when the app is used on a smartphone, but to display the same window as a popup dialog when on a tablet. The dilemma boiled down to two possible approaches for handling navigation:

Using Navigator.pushNamed() along with a custom router that can decide how to display the window based on the device type through the onGenerateRoute method.

Keeping the logic in the parent widget and directly detecting the device type to either use Navigator.pushNamed() or showDialog(). However, this approach would compromise the consistency of named routes.

Both options had their merits, so which should a developer choose?

The Solution

Using showDialog in a Stateless Widget

The recommended approach to effectively solve this problem is to implement a dialog display within a stateless widget class. Here’s how you can go about this:

Step 1: Create a Stateless Widget

Define a stateless widget where you will implement your dialog logic. This widget will handle whether to show a dialog or push a new route based on the device type.

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

Step 2: Setting Up Named Routes

In your main application file, set up the named routes so that both the regular window and the dialog logic can be linked properly.

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

Conclusion

Navigating between different UI representations, such as popup dialogs and regular windows in Flutter based on device type, can be achieved by strategically implementing logic within stateless widgets. This approach allows you to leverage the advantages of named routes while ensuring a seamless user experience.

By encapsulating the navigation logic in one place—within the _showPopup method—you maintain control over how users will perceive and interact with your dialogues. The result is clean, manageable code that retains the intended purpose of navigation within your Flutter app.

Feel free to leverage this approach to enhance your own Flutter development practices and user interface designs!