How to set custom highlighted state of SwiftUI Button

Updated for SwiftUI beta 5

SwiftUI does actually expose an API for this: ButtonStyle.

struct MyButtonStyle: ButtonStyle {

  func makeBody(configuration: Self.Configuration) -> some View {
    configuration.label
      .padding()
      .foregroundColor(.white)
      .background(configuration.isPressed ? Color.red : Color.blue)
      .cornerRadius(8.0)
  }

}


// To use it
Button(action: {}) {
  Text("Hello World")
}
.buttonStyle(MyButtonStyle())

As far as I can tell, theres no officially supported way to do this as of yet. Here is a little workaround that you can use. This produces the same behavior as in UIKit where tapping a button and dragging your finger off of it will keep the button highlighted.

struct HoverButton<Label>: View where Label: View {

    private let action: () -> ()

    private let label: () -> Label

    init(action: @escaping () -> (), label: @escaping () -> Label) {
        self.action = action
        self.label = label
    }

    @State private var pressed: Bool = false

    var body: some View {
        Button(action: action) {
            label()
                .foregroundColor(pressed ? .red : .blue)
                .gesture(DragGesture(minimumDistance: 0.0)
                    .onChanged { _ in self.pressed = true }
                    .onEnded { _ in self.pressed = false })
        }    
    }
}