I am trying to implement bottom nav bar just like in youtube app, with the centre add icon being expanded. Here is the image below.

Here Flutter: How to make a nav bar like in youtube app? the answer is to use package, but is there any way to implement this without using a package?

CodePudding user response：

You can use BottomNavigationBar .That is existing class in flutter For Reference You can check on this flutter documentation site , https://api.flutter.dev/flutter/material/BottomNavigationBar-class.html

CodePudding user response：

In the Scaffold widget, there is a property called bottomNavigationBar, which can take any widget you want to put in there and place it at the bottom of the screen.

Typically a lot of the time you could place the BottomAppBar widget in there. Or alternatively if you really want to you can create your own app bar widget completely.

See this for BottomAppBar https://api.flutter.dev/flutter/material/BottomAppBar-class.html