在SwiftUI中根据视图高度设置视图动画

import SwiftUI

struct ContentView: View {
    @State private var animate = false
    
    var body: some View {
        GeometryReader { geometry in
            VStack {
                Text("Hello, World!")
                    .font(.largeTitle)
                    .padding()
                    .background(Color.blue)
                    .foregroundColor(.white)
                    .cornerRadius(10)
                    .offset(y: self.animate ? 0 : geometry.size.height)
                    .animation(.easeInOut(duration: 1))
            }
            .onAppear {
                self.animate.toggle()
            }
        }
    }
}

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