SwiftUI圆线宽更改停止修剪动画

import SwiftUI

struct ContentView: View {
    @State private var lineWidth: CGFloat = 1.0

    var body: some View {
        VStack {
            Circle()
                .stroke(Color.blue, lineWidth: lineWidth)
                .frame(width: 200, height: 200)
                .animation(nil) // 停止修剪动画

            Button("Change Line Width") {
                withAnimation {
                    if lineWidth == 1.0 {
                        lineWidth = 5.0
                    } else {
                        lineWidth = 1.0
                    }
                }
            }
        }
    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}