swiftui actionsheet
.actionSheet(isPresented: $showingActionSheet) {
ActionSheet(title: Text("Change background"), message: Text("Select a new color"), buttons: [
.default(Text("Red")) { self.backgroundColor = .red },
.default(Text("Green")) { self.backgroundColor = .green },
.default(Text("Blue")) { self.backgroundColor = .blue },
.cancel()
])
}