将SwiftUI视图转换为图像

import SwiftUI
import UIKit

struct ContentView: View {
    var body: some View {
        Text("Hello, World!")
            .font(.largeTitle)
            .padding()
            .background(Color.blue)
            .foregroundColor(.white)
            .cornerRadius(10)
            .onTapGesture {
                let image = self.convertViewToImage(view: self.asImage())
                // 在这里可以对图像进行进一步处理或保存
            }
    }
    
    func asImage() -> UIImage {
        let controller = UIHostingController(rootView: self)
        let view = controller.view
        
        UIGraphicsBeginImageContext(view!.bounds.size)
        view?.drawHierarchy(in: view!.bounds, afterScreenUpdates: true)
        let image = UIGraphicsGetImageFromCurrentImageContext()
        UIGraphicsEndImageContext()
        
        return image!
    }
    
    func convertViewToImage(view: UIImage) -> UIImage {
        let renderer = UIGraphicsImageRenderer(size: view.bounds.size)
        let image = renderer.image { _ in
            view.draw(in: view.bounds)
        }
        
        return image
    }
}

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