code
//
// ContentView.swift
// learn_swiftUi
//
// Created by liuan on 2020/5/14.
// Copyright © 2020 liuan. All rights reserved.
//
import SwiftUI
struct ContentView: View {
@State private var showDetail = false
var body: some View {
Button(action: {
withAnimation{
self.showDetail = !self.showDetail
}
}) { Image(systemName:"chevron.right.circle")
.imageScale(.large)
.rotationEffect(.degrees(self.showDetail ? 90 : 0))
.scaleEffect(showDetail ? 1.5:1)
.padding()
}}
}
struct ContentView_Previews: PreviewProvider {
static var previews: some View {
ContentView()
}
}