swiftui

问题 I’m trying to get my views to animate/transition using .transition() on views. I use similar code from here and put .transition() to both conditional views. struct Base: View { @State private var isSignedIn = false var body: some View { Group { if(isSignedIn){ Home().transition(.slide) }else{ AuthSignin(isSignedIn: self.$isSignedIn).transition(.slide) } } } } struct AuthSignin: View { @Binding var isSignedIn: Bool var body: some View { VStack { Button(action: { self.isSignedIn = true }) {

问题 I’m trying to get my views to animate/transition using .transition() on views. I use similar code from here and put .transition() to both conditional views. struct Base: View { @State private var isSignedIn = false var body: some View { Group { if(isSignedIn){ Home().transition(.slide) }else{ AuthSignin(isSignedIn: self.$isSignedIn).transition(.slide) } } } } struct AuthSignin: View { @Binding var isSignedIn: Bool var body: some View { VStack { Button(action: { self.isSignedIn = true }) {

问题 I've created a project in xcode 12 and added a Widget Extension target. The target is created and I'm left with a simple widget that shows the time. The preview of the widget works as expected and the widget is shown as expected in the simulator. But if I change the view to use List instead of Text , like this: struct SimpleWidgetEntryView : View { var entry: Provider.Entry var body: some View { List { Text("Something") } } } The preview and the simulator both show a red No Entry sign on a

问题 Is there a way to change the output format of a Text using init(_ date: Date, style: Text.DateStyle) ? Using a .timer , the output is like: 0:42 , but I want something like 00:00:42 . Background I want to create a widget (iOS 14) where a timer is running, and as I think it's not a good idea to trigger a widget update every second, and this may even also not work reliably, at least that's not how widget are indented to be used. So I thought about using this predefined timer functionality of

问题 I've been experimenting with some SwiftUI layouts and one of the things that I wanted to try out was creating a simple circular progress ring. After playing around with the code for a while I managed to get everything working the way I was hoping for it to, at least for a prototype. The issue arrises when I embed this view inside a SwiftUI NavigationView. Now, every time I run the app in the canvas, simulator, or on a device, the initial loading of the progress ring has the entire view slowly

问题 SwiftUI has wonderful animation features, but the way it handles changes in Text View content is problematic. It animates the change of the text frame but changes the text immediately without animation. As a result, when the content of a Text View is made longer, animating the transition causes an ellipsis (…) to appear until the text frame reaches its full width. For example, in this little app, pressing the Toggle button switches between shorter and longer text: Here's the code: import

问题 SwiftUI has wonderful animation features, but the way it handles changes in Text View content is problematic. It animates the change of the text frame but changes the text immediately without animation. As a result, when the content of a Text View is made longer, animating the transition causes an ellipsis (…) to appear until the text frame reaches its full width. For example, in this little app, pressing the Toggle button switches between shorter and longer text: Here's the code: import

问题 SwiftUI has wonderful animation features, but the way it handles changes in Text View content is problematic. It animates the change of the text frame but changes the text immediately without animation. As a result, when the content of a Text View is made longer, animating the transition causes an ellipsis (…) to appear until the text frame reaches its full width. For example, in this little app, pressing the Toggle button switches between shorter and longer text: Here's the code: import

问题 Like in UISlider let slider = UISlider() slider.minimumTrackTintColor = .red 回答1: SwiftUI's Slider doesn't let you customize its appearance as of Xcode 11 beta 4. For now, your only option is to create a UISlider and wrap it in a UIViewRepresentable . Work through the “Interfacing with UIKit” tutorial and watch WWDC 2019 Session 231: Integrating SwiftUI to learn how to use UIViewRepresentable . The Slider documentation mentions a type named SliderStyle , but there is no documentation for

问题 Like in UISlider let slider = UISlider() slider.minimumTrackTintColor = .red 回答1: SwiftUI's Slider doesn't let you customize its appearance as of Xcode 11 beta 4. For now, your only option is to create a UISlider and wrap it in a UIViewRepresentable . Work through the “Interfacing with UIKit” tutorial and watch WWDC 2019 Session 231: Integrating SwiftUI to learn how to use UIViewRepresentable . The Slider documentation mentions a type named SliderStyle , but there is no documentation for