Animation 如何使用SwiftUI更改按键上图像的边框?
我有一个由图像和一些文本组成的导航链接,我想在按下链接时更改图像的边框颜色 以下是导航链接:Animation 如何使用SwiftUI更改按键上图像的边框?,animation,button,swiftui,swiftui-navigationlink,Animation,Button,Swiftui,Swiftui Navigationlink,我有一个由图像和一些文本组成的导航链接,我想在按下链接时更改图像的边框颜色 以下是导航链接: NavigationLink(destination: TrickSelectView()) { HStack{ Image("learnTricksButton") .resizable() .clipShape(Circle()) .overlay(Circle().stroke(Co
NavigationLink(destination: TrickSelectView()) {
HStack{
Image("learnTricksButton")
.resizable()
.clipShape(Circle())
.overlay(Circle().stroke(Color(red: 0.95, green: 0.32, blue: 0.34), lineWidth: 4))
.shadow(radius: 7)
.frame(width: width, height: width)
VStack{
Text("Trick")
.font(.system(.largeTitle, design: .rounded))
.foregroundColor(Color(red: 0.13, green: 0.15, blue: 0.22))
Text("Personalise your learning!")
.font(.system(.subheadline, design: .rounded))
.foregroundColor(Color(red: 0.28, green: 0.32, blue: 0.37))
}
}.padding(.bottom, 50)
}.buttonStyle(LearnButtonEffect())
以下是迄今为止我对按钮样式的了解:
struct LearnButtonEffect: ButtonStyle {
func makeBody(configuration: Self.Configuration) -> some View {
configuration.label
.background(configuration.isPressed ? Color.green.opacity(0.5) : Color.green)
.shadow(color: Color.gray, radius: 10, x: 0, y: 0)
.scaleEffect(configuration.isPressed ? 0.9 : 1.0)
}
}
一般来说,我想知道如何在按钮样式定义中引用NavigationLink的特定部分(在本例中为图像边框)。因为在SwiftUI中,我们不保留对任何视图的任何引用。相反,我们更改值(@State
,@Binding
,@observeobject
,@StatObject
)。视图被反映出来
struct ContentView:View{
@State var isActive=false//启动导航
@State var isClicked=false//跟踪单击的时间
var body:一些观点{
导航视图{
导航链接(
目的地:文本(“目的地”),
isActive:$isActive,
标签:{
按钮(操作:{
isActive=true
isClicked=true
},标签:{
HStack{
图像(“LearnTrackButton”)
.可调整大小()
.clipShape(圆())
.overlay(圆圈().stroke(isClicked?Color.黑色:颜色(红色:0.95,绿色:0.32,蓝色:0.34),线宽:4))
.阴影(半径:7)
.框架(宽度:100,高度:100)
VStack{
文本(“技巧”)
.font(.system(.largeTitle,设计:。四舍五入))
.foregroundColor(颜色(红色:0.13,绿色:0.15,蓝色:0.22))
文本(“个性化学习!”)
.font(.system(.subheadline,设计:。四舍五入))
.foregroundColor(颜色(红色:0.28,绿色:0.32,蓝色:0.37))
}
}.padding(.bottom,50)
})
})
}
}
}
您可以使用基本按钮样式
传递特定视图并执行操作
以下是演示:
创造一种风格
struct LearnButtonEffectButtonStyle: PrimitiveButtonStyle {
var image: Image
var action: () -> Void
func makeBody(configuration: PrimitiveButtonStyle.Configuration) -> some View {
ButtonView(configuration: configuration, image: image, action: action)
}
struct ButtonView: View {
@State private var pressed = false
let configuration: PrimitiveButtonStyle.Configuration
let image: Image
var action: () -> Void
var body: some View {
return HStack{
image
.resizable()
.clipShape(Circle())
.overlay(Circle().stroke(self.pressed ? Color.yellow : Color.blue, lineWidth: 4)) // <<- You can change here .overlay(Circle().stroke(self.pressed ? Color.yellow : Color.blue, lineWidth: 4))
.shadow(radius: 7)
.frame(width: 100, height: 50)
.border(self.pressed ? Color.yellow : Color.blue, width: 2) //<<- remove it if not required
configuration.label
}
.padding(.bottom, 50)
.onLongPressGesture(minimumDuration: 0.2, maximumDistance: .infinity, pressing: { pressing in
withAnimation(.easeInOut(duration: 0.2)) {
self.pressed = pressing
}
if !pressing {
action()
}
}, perform: {
print("Perform")
})
.background(self.pressed ? Color.green.opacity(0.5) : Color.green)
.shadow(color: Color.gray, radius: 10, x: 0, y: 0)
.scaleEffect(self.pressed ? 0.9 : 1.0)
}
}
}
我认为OP想要的是唯一的图像,而不是整个按钮。@RajaKishan是的
struct ContentView: View {
@State private var isActive = false
var body: some View {
NavigationView{
NavigationLink(destination: Text("test"), isActive: $isActive) {
VStack{
Text("Trick")
.font(.system(.largeTitle, design: .rounded))
.foregroundColor(Color(red: 0.13, green: 0.15, blue: 0.22))
Text("Personalise your learning!")
.font(.system(.subheadline, design: .rounded))
.foregroundColor(Color(red: 0.28, green: 0.32, blue: 0.37))
}
}.buttonStyle(LearnButtonEffectButtonStyle(image: Image("learnTricksButton"), action: {
self.isActive.toggle()
}))
}
}
}