navigationlink

问题 I have a button in a list item and when I click on it, the NavigationLink's event is also being triggered. I only want to trigger the button event. How to do it? following is my code: ForEach(self.cares,id:\.id){ care in HStack{ if(care.markMode == "打卡"){ Button("今日未打卡"){ } else{ Button("新增记录"){ self.care = care self.showSheetNewMark.toggle() } } NavigationLink(destination:CareDetailView(care: care)){ Text("\(care.nickname!)的\(care.subject!)") } } } 回答1: Add PlainButtonStyle for button, as in

问题 I have a button in a list item and when I click on it, the NavigationLink's event is also being triggered. I only want to trigger the button event. How to do it? following is my code: ForEach(self.cares,id:\.id){ care in HStack{ if(care.markMode == "打卡"){ Button("今日未打卡"){ } else{ Button("新增记录"){ self.care = care self.showSheetNewMark.toggle() } } NavigationLink(destination:CareDetailView(care: care)){ Text("\(care.nickname!)的\(care.subject!)") } } } 回答1: Add PlainButtonStyle for button, as in

问题 When tapping on a NavigationLink, it reduces the opacity slightly. Is there a way to disable this. I tried using .buttonStyle(PlainButtonStyle()) but that didn't have the desired effect. It is embedded in a scrollView (preferred over List for customizability): ScrollView { ForEach(items){ item in NavigationLink(destination: DetailView()){ HStack{ Text("title") Spacer() Image(systemName: "chevron.right") } .padding() .background( RoundedRectangle(cornerRadius: 10, style: continuous)

问题 I have a code and make NavigationLink Button, I write Text and Image, But my Image not a see. Pls help me. VStack{ Image("Coachs") .resizable() .aspectRatio(contentMode: .fill) .frame(width: 370, height: 200) //.clipped() .cornerRadius(20.0) NavigationLink(destination: Text("Detail view here")){ ZStack{ Text("Press on me") .foregroundColor(.white) .font(.largeTitle) Image("Coachs") .resizable() .aspectRatio(contentMode: .fill) .frame(width: 370, height: 200) //.clipped() .cornerRadius(20.0) }

问题 Q1: Why are onAppears called twice? Q2: Alternatively, where can I make my network call? I have placed onAppears at a few different place in my code and they are all called twice. Ultimately, I'm trying to make a network call before displaying the next view so if you know of a way to do that without using onAppear, I'm all ears. I have also tried to place and remove a ForEach inside my Lists and it doesn't change anything. Xcode 12 Beta 3 -> Target iOs 14 CoreData enabled but not used yet

问题 Q1: Why are onAppears called twice? Q2: Alternatively, where can I make my network call? I have placed onAppears at a few different place in my code and they are all called twice. Ultimately, I'm trying to make a network call before displaying the next view so if you know of a way to do that without using onAppear, I'm all ears. I have also tried to place and remove a ForEach inside my Lists and it doesn't change anything. Xcode 12 Beta 3 -> Target iOs 14 CoreData enabled but not used yet

来源： https://stackoverflow.com/questions/60549028/is-there-a-way-to-add-an-extra-function-to-navigationlink-swiftui

来源： https://stackoverflow.com/questions/60549028/is-there-a-way-to-add-an-extra-function-to-navigationlink-swiftui

问题 Let me show the simple source code: struct ContentView : View { @State var isPresented = false var body: some View { NavigationView { HStack{ NavigationLink(destination: MyDetailView(message: "Detail Page #2") ) { Text("Go detail Page #2 >") } .navigationBarTitle("Index Page #1") } } } } Before navigate to MyDetailView, I want to do something, for example: save some data, or change some variable... How could I do that? It may be a simple question, but I really don't know. Thanks for your help

问题 Let me show the simple source code: struct ContentView : View { @State var isPresented = false var body: some View { NavigationView { HStack{ NavigationLink(destination: MyDetailView(message: "Detail Page #2") ) { Text("Go detail Page #2 >") } .navigationBarTitle("Index Page #1") } } } } Before navigate to MyDetailView, I want to do something, for example: save some data, or change some variable... How could I do that? It may be a simple question, but I really don't know. Thanks for your help