Swift IBInspectable and IBDesignable

What is IBInspectable and IBDesignable in swift?

 

With IBInspectable and IBDesignable, it’s possible to build a custom interface.

@IBInspectable properties provide new access to your own attributes 

to be configured on the Interface Builder. 

@IBInspectable  properties are runtime property.
So you can’t see how it changed without building and running your app

Otherwise @IBDesignable is user defined run time property.

If any @IBDesignable view is rendered on the storyboard,

the value of the @IBInspectable property rendered too.
This allows you to check @IBInspectable without building and running your app!

 

Add @IBInspectable properties to UIView

Tada! You can see that properties in storyboard!

 

 

Make own @IBDesignable view.

 

With this custom view, you can check how @IBInspectable property change view!