【发布时间】：2020-06-09 17:57:51
【问题描述】：
问题：
我有 3 个单独的视图，我一次显示所有视图，但我只希望一次显示一个视图，以便用户可以在三个视图之间切换。这就是现在正在发生的事情。
下面的代码很长，但是如果您将代码复制并粘贴到 Xcode 中，您可以看到现在发生了什么。我有三个具有不同大小框架的视图。您可以单击每个视图按钮，它将打开该视图。
import SwiftUI
struct ContentView: View {
@State var show1 = false
@State var show2 = false
@State var show3 = false
var body: some View {
ZStack {
NavigationView {
VStack {
Section {
Color(red: 0.88, green: 0.88, blue: 0.88)
.frame(maxWidth: .infinity, maxHeight: .infinity).edgesIgnoringSafeArea(.all)
HStack {
Button(action: {
withAnimation(.spring())
{
self.show1.toggle()
}
}) {
Text("View1")
.font(.headline)
.fontWeight(.regular)
.lineLimit(nil)
.padding(EdgeInsets.init(top: -5, leading: 15, bottom: 0, trailing: 15))
.foregroundColor(show1 ? .blue : .gray)
}.foregroundColor(show1 ? .blue : .gray)
.padding()
Button(action: {
withAnimation(.spring())
{
self.show2.toggle()
}
}) {
Text("View2")
.font(.headline)
.fontWeight(.regular)
.lineLimit(nil)
.padding(EdgeInsets.init(top: -5, leading: 15, bottom: 0, trailing: 15))
.foregroundColor(show2 ? .blue : .gray)
}.foregroundColor(show2 ? .blue : .gray)
.padding()
Button(action: {
withAnimation(.spring())
{
self.show3.toggle()
}
}) {
Text("View3")
.font(.headline)
.fontWeight(.regular)
.lineLimit(nil)
.padding(EdgeInsets.init(top: -5, leading: 15, bottom: 0, trailing: 10))
.foregroundColor(show3 ? .blue : .gray)
}.foregroundColor(show3 ? .blue : .gray)
.padding()
}}}
}
VStack (alignment: .center) {
if self.show1 {
ShowView1().transition(
AnyTransition.move(edge: .bottom).combined(with: .move(edge: .bottom)).combined(with: .opacity))
}
}
VStack (alignment: .center) {
if self.show2 {
ShowView2().transition(
AnyTransition.move(edge: .bottom).combined(with: .move(edge: .bottom)).combined(with: .opacity))
}
}
VStack (alignment: .center) {
if self.show3 {
ShowView3().transition(
AnyTransition.move(edge: .bottom).combined(with: .move(edge: .bottom)).combined(with: .opacity))
}
}}}}
struct ShowView1: View {
var body: some View {
ZStack() {
Color.white
.frame(maxWidth: .infinity, maxHeight: 52)
}
}
}
struct ShowView2: View {
var body: some View {
ZStack() {
Color.white
.frame(maxWidth: .infinity, maxHeight: 600)
}
}
}
struct ShowView3: View {
var body: some View {
ZStack() {
Color.white
.frame(maxWidth: .infinity, maxHeight: 300)
}
}
}
struct ContentView_Previews: PreviewProvider {
static var previews: some View {
ContentView()
}
}
【问题讨论】：
标签： xcode button toggle swiftui frame