I’m developing a Flutter application that needs to connect to an Epson CW4000U inkjet printer. However, I’m struggling to establish a connection with the printer and access its functionality. I’ve checked the Epson ColorWorks SDK, but it doesn’t seem to…
I'm using the new DocumentGroupLaunchScene introduced in iOS 18.0 in my document-based SwiftUI app like this: @main struct MyApp: App { var body: some Scene { DocumentGroup(newDocument: MyDocument()) { file in ContentView(document: file.$document) } if #available(iOS 18.0, *) { DocumentGroupLaunchScene…
I'm determining to use DispatchQueue, DispatchQueue.global() or OperationQueue to run code in background thread in my app. Let's say I queue some tasks on these queues and then switch to another app or lock screen for a while, which results…
I used to filter using initializers like this(example): struct ArticleView: View { @Environment(.modelContext) private var modelContext @Query private var articleStates: [ArticleState] let article: Article init(article: Article) { self.article = article _articleStates = Query(filter: #Predicate { $0.articleID == article.id } )…
Here, hasComplexWave is a Boolean @State on a SwiftUI View. Here’s the code that uses it: view.visualEffect { [hasComplexWave] content, proxy in content.distortionEffect( ShaderLibrary.complexWave( .float(startDate.timeIntervalSinceNow), .float2(proxy.size), .float(0.5), .float(8), .float(10) ), maxSampleOffset: CGSize(width: 100, height: 100), isEnabled: hasComplexWave ) } The…
The simple code below moves the text by updating the @State var offset within a withAnimation block. struct ContentView: View { @State var offset: CGFloat = 0 var body: some View { NavigationView { VStack { Text("Some moving text") .offset(y:…
I have a fulscreen SpriteKit scene view, that handles pan gestures within itself. Over it, I have overlaid native SwiftUI views with OnTapGesture, which must react to them being touched but should not interfere with pan gestures, and pass them…
The following SwiftUI code will generate Bottom Tab public struct TeamBContentView : View { public init() {} public var body: some View { VStack { TabView { Text("This is home screen") .tabItem { Text("Home") Image(systemName: "house.fill") } Text("This is about…
I'm encountering an error when trying to get the token using Firebase Messaging in my Flutter iOS app. The error message is as follows: FLTFirebaseMessaging: An error occurred while calling method Messaging#getToken, errorOrNil => { NSLocalizedFailureReason = "Invalid fetch response,…
I am trying to extend UIApplication to conform to a custom protocol AppSwitcher for handling URL opening. This code worked fine in Xcode 15, but after upgrading to Xcode 16, it is causing errors. public protocol AppSwitcher { func open(…