SwiftUI的毛玻璃效果

记录一下 SwiftUI的毛玻璃效果

import SwiftUI
/*
 extension ShapeStyle where Self == Material {

     /// A material that's somewhat translucent.
     public static var regularMaterial: Material { get }

     /// A material that's more opaque than translucent.
     public static var thickMaterial: Material { get }

     /// A material that's more translucent than opaque.
     public static var thinMaterial: Material { get }

     /// A mostly translucent material.
     public static var ultraThinMaterial: Material { get }

     /// A mostly opaque material.
     public static var ultraThickMaterial: Material { get }
 }
 */
struct BackgroundMatericalsBootCam: View {
    let url = URL(string: "https://picsum.photos/200")
    var body: some View {
        VStack{
            Spacer()
            VStack{
                RoundedRectangle(cornerRadius: 4)
                    .frame(width: 50, height: 4)
                    .padding()
                Spacer()
            }.frame(height: 350)
                .frame(maxWidth: .infinity)
                .background(.ultraThinMaterial)
                .cornerRadius(30)
        }.ignoresSafeArea()
            .background(
                AsyncImage(url: url, scale: 0.2)
            )
    }
}

#Preview {
    BackgroundMatericalsBootCam()
}