how to set background image on view in swift code example

Example 1: how to put background image in swiftui

var body: some View {
    TabbedView(selection: $selection, content: {
        VStack {
            Text("TEST 0")
                .background(Color.clear)
            }
            .tabItemLabel(Text("Simple Center"))
            .tag(0)
        VStack {
            Text("TEST 1")
                .background(Color.clear)
            }
            .tabItemLabel(Text("Bottom Right"))
            .tag(1)
            .background(Color.clear)
        VStack {
            Text("TEST 2")
                .background(Color.clear)
            }
            .tabItemLabel(Text("Rotator"))
            .tag(2)
        VStack {
            Text("TEST 3")
                .background(Color.clear)
            }
            .tabItemLabel(Text("Quadrants"))
            .tag(3)
            .background(Color.clear)
    })
    .background(
        Image("background-gradient")
            .resizable()
            .scaledToFill()
    )
    .padding()
}

Example 2: how to change background color of stackview swift

extension UIStackView {
    func addBackground(color: UIColor) {
        let subView = UIView(frame: bounds)
        subView.backgroundColor = color
        subView.autoresizingMask = [.flexibleWidth, .flexibleHeight]
        insertSubview(subView, at: 0)
    }
}