swiftui

问题 I follow Apple's example interfacing-with-uikit to use PageView in SwiftUI. And I want to implement it in my app. The scenario is that in MovieView , when the user taps an image of image list then it triggers call to PageView with views and selected index as parameters. But when I click on any item of image list, it always show the page view with the 1st element. I try to change it in init() of PageView , however it is not working. In console, I try to print something, and I see the

问题 Due to some limitations in SwiftUI Text. I've to use the UIText instead. In an UIViewRepresentable, func makeUIView(context: Context) -> UITextView { let vw = UITextView() let env = context.environment // UIFont? Font? vw.font = env.font ... } I want to initialize the UIKit UILabel using the SwiftUI EnvironmentValues. More specifically, assign an SwiftUI Font to UIKit UIFont. The question is, how to convert a Font to UIFont? 回答1: If you need share same font, then use UIFont as model property

问题 Due to some limitations in SwiftUI Text. I've to use the UIText instead. In an UIViewRepresentable, func makeUIView(context: Context) -> UITextView { let vw = UITextView() let env = context.environment // UIFont? Font? vw.font = env.font ... } I want to initialize the UIKit UILabel using the SwiftUI EnvironmentValues. More specifically, assign an SwiftUI Font to UIKit UIFont. The question is, how to convert a Font to UIFont? 回答1: If you need share same font, then use UIFont as model property

问题 Due to some limitations in SwiftUI Text. I've to use the UIText instead. In an UIViewRepresentable, func makeUIView(context: Context) -> UITextView { let vw = UITextView() let env = context.environment // UIFont? Font? vw.font = env.font ... } I want to initialize the UIKit UILabel using the SwiftUI EnvironmentValues. More specifically, assign an SwiftUI Font to UIKit UIFont. The question is, how to convert a Font to UIFont? 回答1: If you need share same font, then use UIFont as model property

问题 Due to some limitations in SwiftUI Text. I've to use the UIText instead. In an UIViewRepresentable, func makeUIView(context: Context) -> UITextView { let vw = UITextView() let env = context.environment // UIFont? Font? vw.font = env.font ... } I want to initialize the UIKit UILabel using the SwiftUI EnvironmentValues. More specifically, assign an SwiftUI Font to UIKit UIFont. The question is, how to convert a Font to UIFont? 回答1: If you need share same font, then use UIFont as model property

问题 I'm trying to create NavigationLink in MacBook touchBar with help of SwiftUI. Actually with my piece of code, the button is shown in touchbar, but unfortunately the link doesn't work. NavigationView { .touchBar { NavigationLink(destination: BookView()) { Text("GoToBook") } } } struct BookView: View { var body: some View { Text("Hello") } } 回答1: Try instead with Button in touchBar activating NavigationLink programmatically, like below @State private var isActive = false ... // below in body

问题 i have a timer in SwiftUI which works when opening the view for the first time. When navigating back and opening again, the timer does not start. Any idea what can be wrong ? import SwiftUI struct ClockDetail: View { @State var seconds: Int = 0 @ObservedObject var motion: MotionManager let timer = Timer.publish(every: 1, on: .main, in: .common).autoconnect() var body: some View { VStack(alignment: .leading) { Text("\(seconds)").font(.title).onReceive(timer) { output in self.seconds += 1 }

问题 Why do I have the keyboard that pushes up my View? Here's the code: import SwiftUI struct ContentView : View { @State var searchText = "" @State var pressedFirstButton = false @State var pressedSecondButton = true @State var pressedThirdButton = false var body : some View { NavigationView { VStack { if pressedSecondButton == true { Form { SearchBar(testo: $searchText) .padding(.horizontal, -10) Text("ForEach") } } HStack { Spacer() buttonFirst Spacer() buttonSecond Spacer() buttonThird Spacer

问题 Why do I have the keyboard that pushes up my View? Here's the code: import SwiftUI struct ContentView : View { @State var searchText = "" @State var pressedFirstButton = false @State var pressedSecondButton = true @State var pressedThirdButton = false var body : some View { NavigationView { VStack { if pressedSecondButton == true { Form { SearchBar(testo: $searchText) .padding(.horizontal, -10) Text("ForEach") } } HStack { Spacer() buttonFirst Spacer() buttonSecond Spacer() buttonThird Spacer

问题 I am trying to constrain image size between min and max. But the view expands both width and height to their max values, removing the original aspect ratio. import SwiftUI struct ImageConstrainSizeTest: View { var body: some View { Image("bike") .resizable() .aspectRatio(contentMode: .fit) .border(Color.yellow, width: 5) .frame(minWidth: 10, maxWidth: 300, minHeight: 10, maxHeight: 300, alignment: .center) .border(Color.red, width: 5) } } struct ImageConstrainSizeTest_Previews: