Swiftui creates a beautiful custom press feedback button

functional requirement

Sometimes , We need to be in SwiftUI Create an impressive button for user interaction , Like this one down here ：

As shown in the figure above , We give users a colorful feedback effect after continuously pressing the view , I can't help but brighten my eyes .

How is this achieved ？

Actually , It's not as hard as you think ！

So, What are you waiting for ？

Let‘s go！

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Functional analysis

1. Getting the pressed state of the button is the key

In order to get different feedback effects according to the button pressing state , We first need a way to get the button pressed .

If you have implemented custom button styles , Then I will never forget Configuration.isPressed attribute .

This is exactly what we need ！

1.1 Use the binding to pass the press state

struct HyButtonPressingStyle: