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Unable to add custom navigation in other classes in flutter

I am new to flutter. I am creating UIs for both mobile and web view.

I followed a YouTube video and created a custom HeaderNavigation. It is working completely fine separately.

But when I try to add the header to another class I am getting a lot of errors. I searched google and tried to find different methods to add the navigation bar. But unable to find that.

Please help me to add header to another classes.

I am unable to add the code here, so I am sharing the GitHub repository link.

GitHub Repository

This is the error I am getting while running the above project.

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Solution

  • You are nesting Scaffold(...) and placing the AppBar in a Column.

    I moved the AppBar to the main Scaffold and placed the Cards in the body of the Scaffold - this seems to fix the issue, but I'm not sure this is the desired result. I've created a pull-request on your GitHub.

    Try this, see if it helps.