ios - 如何在swiftui中动态更改文本背景颜色？

Question

我想通过传递函数到 .background() 像这样更改文本背景颜色，颜色的值是 0 或 1 或 2 将取决于 DB 的数据。我该如何修复它:

import SwiftUI

struct ContentView: View {
    @State var color = 0;
    var body: some View {
        Text("Hello, World!")
            .background(changeBkColor(int : self.$color))
        
            
    }
}
func changeBkColor(int : color)
{
    if(color == 1)
    {
        return Color.red;
    }
    else if(color == 2)
    {
        return Color.green;
    }
    else
    {
        return Color.blue;
    }
}
struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}

Answer 1

这里是

struct ContentView: View {
    @State var color = 0;
    var body: some View {
        Text("Hello, World!")
            .background(changeBkColor(color: self.color))


    }
}
func changeBkColor(color: Int) -> Color
{
    if(color == 1)
    {
        return Color.red;
    }
    else if(color == 2)
    {
        return Color.green;
    }
    else
    {
        return Color.blue;
    }
}