获取SwiftUI中的文本宽度

import SwiftUI

struct ContentView: View {
    var body: some View {
        GeometryReader { geometry in
            Text("Hello, SwiftUI!")
                .font(.title)
                .background(Color.yellow)
                .onAppear {
                    let textWidth = geometry.size.width
                    print("Text width: \(textWidth)")
                }
        }
    }
}

import SwiftUI

extension Text {
    func measureTextWidth() -> CGFloat {
        let text = self
        let font = NSFont.systemFont(ofSize: NSFont.systemFontSize)
        let attributes = [NSAttributedString.Key.font: font]
        let size = text.stringValue.size(withAttributes: attributes)
        return size.width
    }
}

struct ContentView: View {
    var body: some View {
        Text("Hello, SwiftUI!")
            .font(.title)
            .background(Color.yellow)
            .onAppear {
                let textWidth = Text("Hello, SwiftUI!").measureTextWidth()
                print("Text width: \(textWidth)")
            }
    }
}