This package offers a collapsible app bar along with an attractive search bar animation, enhancing the visual appeal of your Flutter app with an iOS-inspired design. This package is versatile, allowing complete customization, and it seamlessly works on both iOS and Android platforms.
I've made small explanation of what I have and what I'm expecting
https://github.com/kspo/super_cupertino_navigation_bar/assets/20270296/2e949c35-95c9-4b00-855d-bd5bc4d26eb7
here's the code of actual Example Widget: