第一次运行后刷新Swift UI中的文本

@State private var text: String = "初始文本"

Text(text)

.onAppear {
    text = "刷新后的文本"
}

import SwiftUI

struct ContentView: View {
    @State private var text: String = "初始文本"
    
    var body: some View {
        VStack {
            Text(text)
                .font(.title)
                .padding()
            
            Button(action: {
                // 模拟刷新按钮点击事件
                text = "刷新后的文本"
            }) {
                Text("刷新")
                    .font(.headline)
                    .padding()
                    .background(Color.blue)
                    .foregroundColor(.white)
                    .cornerRadius(10)
            }
        }
        .onAppear {
            text = "刷新后的文本"
        }
    }
}

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