How to keep the app bar constant while navigating through different screens using Flutter?

edit

There are several ways to keep the app bar constant while navigating through different screens using Flutter:

1. Use a shared app bar widget: Create a separate widget for the app bar and share the widget across all screens. This will ensure the same app bar is displayed on all screens.

2. Use a navigation drawer: If your app has a navigation drawer, you can place the app bar in the drawer so that it remains constant across all screens.

3. Use the DefaultTabController widget: If your app has multiple tabs, you can use the DefaultTabController widget to create a constant app bar that is shared across all tabs.

4. Use the PersistentHeader widget: This widget allows you to create a more complex layout for the app bar, and it can be made persistent across all screens.

Overall, the best approach depends on the specific needs of your app. However, with these options, you can easily keep the app bar constant while navigating through different screens using Flutter.