[英]Hide and Show View after animation is finished in SwiftUI
How to hide and show an Image/View after an animation is done in SwiftUI.如何在 SwiftUI 中完成 animation 后隐藏和显示图像/视图。
Image(systemName: "arrow.2.circlepath.circle.fill")
.rotationEffect(.degrees(spin ? 360 : 0))
.animation(Animation.easeInOut(duration: 0.8).repeatCount(5))
Use one variable to control the rotation and a second one to control the alpha:使用一个变量来控制旋转,使用第二个变量来控制 alpha:
struct ContentView: View {
@State var degrees: Double = 0
@State var alpha: Double = 1
var body: some View {
Image(systemName: "arrow.2.circlepath.circle.fill")
.rotationEffect(.degrees(degrees))
.onAppear(perform: {
withAnimation(Animation.easeInOut(duration: 0.8).repeatCount(5)) {
self.degrees = 360
}
DispatchQueue.main.asyncAfter(deadline: .now() + 4) {
self.alpha = 0
}
})
.opacity(alpha)
}
}
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