swiftui

问题 I followed the Swift project UsingFiles github and its video to write files in my SwiftUI project. The project UsingFiles can write files to Files APP and then the writing files can be seen in the Files APP. But I followed the code as following, the files cannot be seen in Files APP. let file = "\(UUID().uuidString).txt" let contents = "Some text..." let dir = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first! let fileURL = dir.appendingPathComponent(file) do { try

问题 The idea, I thought, was this: whatever is not provided yet in SwiftUI, one can get around using UIViewRepresentable. So I set out to make a UIViewRepresentable for TTTAttributedLabel. But there is something basic missing in the API, or I am missing something basic: how can one set the "intrinsic content size" of the UIViewRepresentable? Much like a SwiftUI Text , I would want my component to be able to set itself to a certain size considering the size of its container. My first idea was to

问题 The idea, I thought, was this: whatever is not provided yet in SwiftUI, one can get around using UIViewRepresentable. So I set out to make a UIViewRepresentable for TTTAttributedLabel. But there is something basic missing in the API, or I am missing something basic: how can one set the "intrinsic content size" of the UIViewRepresentable? Much like a SwiftUI Text , I would want my component to be able to set itself to a certain size considering the size of its container. My first idea was to

问题 I want to build a progress view that look like a circle that fills with water as the progress increase. To do that, I've made a custom Shape that create the water and I added an Animation that repeat forever to a wave effect on that Shape . With that I wanted to add an animation while the progress increase to simulate that the water level increases. The problem is that when I trigger this last animation, the one that it's added onAppear stop working. Is there a way to fix that so both

问题 I want to change the DatePicker's date view. I just want to get a month and year selection. I want to assign ObservedObject to a variable at each selection. My Code: @State private var date = Date() var body: some View { DatePicker("", selection: $date, in: Date()..., displayedComponents: .date) .labelsHidden() .datePickerStyle(WheelDatePickerStyle()) .onDisappear(){ let dateFormatter = DateFormatter() dateFormatter.dateFormat = "MM/yyyy" self.cardData.validThru = dateFormatter.string(from:

问题 Code for Toggle in SwiftUI is this: Toggle(isOn: $vibrateOnRing) { Text("Vibrate on Ring") } This will produce a toggle button with text label looking like this: Vibrate on Ring | [--empty space--] | Toggle I need a right-aligned text label, like this: [--empty space--] | Vibrate on Ring | Toggle How to do it in SwiftUI? 回答1: Here it is Toggle(isOn: $vibrateOnRing) { Text("Vibrate on Ring") .frame(maxWidth: .infinity, alignment: .trailing) } 来源： https://stackoverflow.com/questions/62698587

问题 I'd like to have a worker task update a SwiftUI view. The worker task is busy doing the procedural work of the application - playing sounds, and firing timer-based events. I'd like to to flash several icons in a SwiftUI view during those timer events. So I want to trigger a view refresh in those icon views. So, I created an environmentObject called Settings. It's instantiated in the App Delegate, and attached to the root view in the SceneDelegate. The Settings object works just fine inside

问题 RectangleView has a slide animation, his child TextView has a rotation animation. I suppose that RectangleView with his child(TextView) as a whole slide(easeInOut) into screen when Go! pressed, and TextView rotate(linear) forever. But in fact, the child TextView separates from his parent, rotating(linear) and sliding(linear), and repeats forever. why animation applied to parent effect child animation? struct AnimationTestView: View { @State private var go = false var body: some View { VStack

问题 RectangleView has a slide animation, his child TextView has a rotation animation. I suppose that RectangleView with his child(TextView) as a whole slide(easeInOut) into screen when Go! pressed, and TextView rotate(linear) forever. But in fact, the child TextView separates from his parent, rotating(linear) and sliding(linear), and repeats forever. why animation applied to parent effect child animation? struct AnimationTestView: View { @State private var go = false var body: some View { VStack

问题 I made sample app with 3 pages and "Next", "Back" buttons. When I click "Next" animation is perfect: the old content goes to the left and new content comes from the right. However, I'm struggling to make "Back" animation to work nice simultaneously. Goal: when clicking "Back" old content should go to the right and new content should come from the left. (animation for "Back" should be reverse to animation for "Next") Any idea how to accomplish this? Below is perfectly working transition for