SwiftUI按钮在出现时更改文本大小

import SwiftUI

struct ContentView: View {
    @State private var buttonText = "点击按钮"
    @State private var isButtonVisible = false

    var body: some View {
        VStack {
            if isButtonVisible {
                Button(action: {
                    // 按钮点击事件
                    buttonText = "按钮已点击"
                }) {
                    Text(buttonText)
                        .font(.largeTitle) // 设置字体大小
                        .padding()
                        .background(Color.blue)
                        .foregroundColor(.white)
                        .cornerRadius(10)
                }
            }
            
            Button(action: {
                // 切换按钮可见性
                isButtonVisible.toggle()
            }) {
                Text(isButtonVisible ? "隐藏按钮" : "显示按钮")
                    .font(.headline)
                    .padding()
                    .background(Color.green)
                    .foregroundColor(.white)
                    .cornerRadius(10)
            }
        }
        .padding()
    }
}

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