This is a paid asset, but now you can download Fantasy Mobile UI Free.
Detail this asset from Unity Store: Original Link
Fantasy Mobile UI v1.5 (Latest version)
Fantasy Mobile UI v1.4
Customizable mobile GUI interface, containing many elements to create a full mobile game.
Sources included!
-Updated to Devion Games website.
-Changed asset path from Unitycoding/Package to Devion Games/Package
-Updated Documentation
UI Widgets
UI Widgets is a collection of useful base ui scripts. Some of my assets include this package and extend from the base classes. You can download it using the Module Manager.
UIWidget is responsible for the management of widgets as well as animating them. Your custom widgets should extend from this class or from child classes. This way you can always track existing widgets by name in your game.
You can add a callback to control other elements of your game when dealing with a widget. Enable/Disable game objects, call a custom method if this widget is shown or closed.