I receive a buffer from[AVSpeechSynthesizer convertToBuffer:fromBuffer:] and want to schedule it on an AVPlayerNode. The player node's output format need to be something that the next node could handle and as far as I understand most nodes can handle a canonical format. The format provided by AVSpeechSynthesizer is not something thatAVAudioMixerNode supports. So the following:   AVAudioEngine *engine = [[AVAudioEngine alloc] init];   playerNode = [[AVAudioPlayerNode alloc] init];   AVAudioFormat *format = [[AVAudioFormat alloc] initWithSettings:utterance.voice.audioFileSettings];   [engine attachNode:self.playerNode];   [engine connect:self.playerNode to:engine.mainMixerNode format:format]; Throws an exception: Thread 1: "[[busArray objectAtIndexedSubscript:(NSUInteger)element] setFormat:format error:&nsErr]: returned false, error Error Domain=NSOSStatusErrorDomain Code=-10868 \"(null)\"" I am looking for a way to obtain the canonical format for the platform so that I can use AVAudioConverter to convert the buffer. Since different platforms have different canonical formats, I imagine there should be some library way of doing this. Otherwise each developer will have to redefine it for each platform the code will run on (OSX, iOS etc) and keep it updated when it changes. I could not find any constant or function which can make such format, ASDB or settings. The smartest way I could think of, which does not work:   AudioStreamBasicDescription toDesc;   FillOutASBDForLPCM(toDesc, [AVAudioSession sharedInstance].sampleRate,                      2, 16, 16, kAudioFormatFlagIsFloat, kAudioFormatFlagsNativeEndian);   AVAudioFormat *toFormat = [[AVAudioFormat alloc] initWithStreamDescription:&toDesc]; Even the provided example for iPhone, in the documentation linked above, uses kAudioFormatFlagsAudioUnitCanonical and AudioUnitSampleType which are deprecated. So what is the correct way to do this?

Following the examples from the official documentation: https://developer.apple.com/documentation/swiftui/adding-a-search-interface-to-your-app When the user types in the text in the search field, the list is updated with filtered results. How do I cause these changes to be animated? I tired to put .animated() after the .searchable modifier, the result was what I am looking for, however it also broke the animation of the search field getting/releasing focus.

I used standard font styles in an iOS app. For example .font(.headline). I hoped that developing this way would allow the adoption of the app to other platforms, relatively easy. However, when trying to run for iPadOS, the text did not increase in size to occupy the more abundant space offered by larger screen, but it actually shrank. Overall, the app does not look great "automatically". Why does it happen? What is the best practice for cross platform development with SwiftUI (with regards to font sizes). I want to make as little as possible human interface design decisions on my own and just let SwiftUI take care of everything. (But I also want the results to look as Apple would consider great looking)

I have a save button: Button(action: { saveTapped() }) { Label("Save", systemImage: wasSaved ? "checkmark" : "square.and.arrow.down") } .contentTransition(.symbolEffect(.replace)) .disabled(wasSaved) Now, I created a new custom icon and added it into the assets catalogue: "custom.square.and.arrow.down.badge.checkmark" for when the wasSaved state is true. The issue I am facing is that to use it I need to use the method of Label with image:, while to use the non custom symbol, I need to use systemImage:. So how is it possible to transition between the two?

I have an observable object which is a model a view. I also have a Tip (from TipKit) with @Parameter and a rule. The source of truth for the state is in the observable object, however the Tip needs to be updated when state changes. So how do I bind between the two? The way I was thinking was to sink updates from objectWillChange and check if Tips parameter needs to be updated or add didSet if it a @Published property. But I am not sure this is the best practice. Schematic example: class MyModel: ObservableObject { struct TapSubmitTip: Tip { @Parameter static var isSubmitButtonEnabled: Bool = false var title: Text { Text("Tap \"Submit\" to confirm your selection.") } var rules: [Rule] { #Rule(Self.$isSubmitButtonEnabled) { $0 == true } } } let tapSubmitTip = TapSubmitTip() var objectWillChangeCancallable: AnyCancellable! // Used by the view to enable or disable the button var isSubmitButtonEnabled: Bool { // Some logic to determine if button should be enabled. } init() { objectWillChangeCancallable = objectWillChange.sink { [weak self] void in guard let self else { return } if isSubmitButtonEnabled { TapSubmitTip.isSubmitButtonEnabled = true } } } ... // Call objectWillChange or update published properties as needed. ... }

I opened a feedback ticket (FB16508762) but maybe someone in the community already found a workaround while the feedback reaches the maintainers. When I put a Button inside a ScrollView, the tap animation stops working reliably and works only when the user taps and holds the button for a short time. The reasons, I believe is related to the fact that isPressed of configuration does not change and the default button styles use it to animate the tap. import SwiftUI struct DebuggingButtonStyle: ButtonStyle { func makeBody(configuration: Configuration) -> some View { configuration.label .onChange(of: configuration.isPressed, { oldValue, newValue in print("Is pressed: \(oldValue) -> \(newValue)") }) } } struct ContentView: View { var body: some View { VStack { Text("Buttons inside scroll view respond to taps as expected, however isPessed value of the configuration do not change unless the user press and hold it. Try to press the promiment button quickly or use the debug button and observe the console log.") ScrollView { VStack { Button("Button Inside ScrollView") { print("Button tapped") } .buttonStyle(.borderedProminent) Button("Button Inside ScrollView (printing isPressed)") { print("Button tapped") } .buttonStyle(DebuggingButtonStyle()) } } .border(FillShapeStyle(), width: 2) Spacer() Text("For reference, here is a button outside of a ScrollView. Tap the promiment button to observe how the button is expected to animate in respnse to a press.") VStack { Button("Button Outside ScrollView") { print("Button tapped") } .buttonStyle(.borderedProminent) Button("Button Outside ScrollView (printing isPressed)") { print("Button tapped") } .buttonStyle(DebuggingButtonStyle()) } } .padding() } }