填充整个屏幕:

var body: some View {
    Color.green.edgesIgnoringSafeArea(.all)
}

我喜欢声明一个修饰符来改变视图的背景颜色。

extension View {
  func background(with color: Color) -> some View {
    background(GeometryReader { geometry in
      Rectangle().path(in: geometry.frame(in: .local)).foregroundColor(color)
    })
  }
}

然后我通过将颜色传递给视图来使用修饰符。

struct Content: View {

  var body: some View {
    Text("Foreground Label").foregroundColor(.green).background(with: .black)
  }

}

这个解决方案有效吗?:

添加以下行到SceneDelegate: window.rootViewController?backgroundColor = .black

func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
        if let windowScene = scene as? UIWindowScene {

                window.rootViewController?.view.backgroundColor = .black
}

你可以简单地改变一个视图的背景颜色:

var body : some View{


    VStack{

        Color.blue.edgesIgnoringSafeArea(.all)

    }


}

你也可以使用ZStack:

var body : some View{


    ZStack{

        Color.blue.edgesIgnoringSafeArea(.all)

    }


}

像这样

struct ContentView : View {
    @State var fullName: String = "yushuyi"
    var body: some View {        
        VStack
            {
                TextField($fullName).background(SwiftUI.Color.red)
                Spacer()
        }.background(SwiftUI.Color.yellow.edgesIgnoringSafeArea(.all))
    }
}

首先，你应该使用

 ZStack {
      Color("Desired_color_name").ignoresSafeArea()
// if you create any color set then give that colour set name
// otherwise use Color.gray or as you want the colour name
    
     //Here you should start your design
    }