Explore the integration of web technologies within your app. Discuss building web-based apps, leveraging Safari functionalities, and integrating with web services.

All subtopics

Post

Replies

Boosts

Views

Activity

WKWebView crashes after repeated reloads on iOS 18
Hi! I have a rather complicated SwiftUI browser app with a WKWebView. There is an option to reload the website after a configurable amount of time. Starting with iOS 18, the app crashes after repeated reloads. How many reloads that are required depends on the device, sometimes 100, sometimes 1000. Reloading is done via a timer that triggers the following code on the main thread: let request = URLRequest(url: url, cachePolicy: policy) self.parent.webView.load(request) The URL is configurable and cachePolicy can be either .reloadIgnoringLocalAndRemoteCacheData or .useProtocolCachePolicy How the crash affects the device also differs from device to device and from time to time. I have suffered from the following crashtypes: App is killed App is killed and Safari also stops working App is killed and the whole OS is really slow The WKWebView stops loading and hangs at 20%. The device is rebooted My app has an option to disable cache. Cache is disabled by setting cachePolicy to .reloadIgnoringLocalAndRemoteCacheData and by removing all cache in a rather complicated way. Basicly i'm doing something like this: dataStore.removeData(ofTypes: types, modifiedSince: Date.distantPast, completionHandler: nil) if let klazz = NSClassFromString("Web" + "History"), let clazz = klazz as AnyObject as? NSObjectProtocol { if clazz.responds(to: Selector(("optional" + "Shared" + "History"))) { if let webHistory = clazz.perform(Selector(("optional" + "Shared" + "History"))) { let o = webHistory.takeUnretainedValue() _ = o.perform(Selector(("remove" + "All" + "Items"))) } } } if let cachesPath = NSSearchPathForDirectoriesInDomains(.cachesDirectory, .userDomainMask, true).first { let contents = (try? FileManager.default.contentsOfDirectory(atPath: cachesPath)) ?? [] for file in contents { if foldersToDelete.contains(file) { let path = cachesPath.appending("/").appending(file) do { try FileManager.default.removeItem(atPath: path) } catch { print("Can't delete cache file: \(path), error: \(error.localizedDescription)") } } } } The cache state affects the intensity of the crash. Disabling the cache shortens the time the app is working, while enabling the cache reduces the intensity of the bug. Based on my investigation, I suspect that loading a website in a WKWebVew leaks memory in iOS 18. If the whole website needs to be requested (= caching off), it results in a more significant memory leak and a faster crash time. Is this a known issue? Am I doing something wrong? Is there a potential workaround?
2
0
278
3w
how to prevent YouTube app from opening.
Hello I am having issues where when I open a link to YouTube in a wkwebview it opens up the installed YouTube app. I have tried my own way of blocking the opening of the YouTube app but it seems I'm stuck. Is there a way to prevent certain apps from opening automatically from links clicked on or traveled to? Here is what I have so far. guard let url = navigationAction.request.url else { decisionHandler(.cancel) return } //not sure why this code is not being used... // Check if the navigation is a link click with target="_blank" if navigationAction.targetFrame == nil { // Handle the navigation request to open a new window if let url = navigationAction.request.url { // UIApplication.shared.open(url) //opens in safari.... let request = URLRequest(url: url) webView.load(request) decisionHandler(.cancel) return } } // Continue with the navigation if not a link with target="_blank" if url.scheme == "youtube" || url.scheme == "music" { decisionHandler(.cancel) return } //this should cancel app opening for youtube:// links and apple music. // if let url = navigationAction.request.url { // // Allow Google sign-in redirects // if url.absoluteString.contains("accounts.google.com") || url.absoluteString.contains("gstatic.com") { // decisionHandler(.allow) // return // } // } if url.absoluteString.hasPrefix("http") { decisionHandler(.allow) return } if let url = navigationAction.request.url { if shouldDownloadFile(from:url) { // if navigationAction.navigationType == .other, let mimeType = navigationAction.request.allHTTPHeaderFields?["Content-Type"], mimeType.contains("application/pdf") { downloadFile (from: url) decisionHandler(.cancel) return } } decisionHandler(.allow) }
1
0
157
3w
iOS Simulator Safari JS PushManager.subscribe(...) empty keys
When I run the following code in XCode iOS Simulator on Safari (connecting via Safari DevTools): navigator.serviceWorker.ready.then((reg) => reg.pushManager.subscribe({ userVisibleOnly: true, applicationServiceKey: "..." }).then((sub) => console.log(sub.toJSON()))) I get the response: { keys: { p256dh: "", auth: "" } } But I'm expecting p256dh and auth (and endpoint) to be filled out. Why is it not?
0
1
153
3w
iPadOSにおけるChromeブラウザとWKWebView API利用時のWebRTCカメラアクセスに関する問い合わせ
私たちはJavaアプリケーション開発者で、iPadOS上でのWebRTCによるカメラアクセスに関して、iPadOS 17.1での挙動について質問がございます。 具体的には、iPadOS 17.1でChromeブラウザを利用し、WKWebView API経由でカメラにアクセスしようとした際、エラーが発生し、カメラ撮影が実行できない現象が発生しております。弊社の調査では、WKWebView APIのnavigator.mediaDevicesプロパティを通じたデバイスアクセスが、Chromeで動作しない可能性が示唆されました。しかし、Safariブラウザでは正常に動作するため、Chromeに固有の制限があるのか、またはiPadOSの設定や仕様に起因するのか判断しかねております。 現在、iPadOS 17.1でのカメラアクセスに関するWKWebViewとWebRTCの仕様やChromeでの制約について、ご見解や解決策についてご教示いただけますと幸いです。 どうぞよろしくお願いいたします。
0
0
112
3w
Safari - cookie setting default behavior in iOS 18
Hello! I have a question about changes in default behavior of Safari related to cookie setting. We had an issue - our Single Sign On login was not working, because of lost cookie on some step of the flow. Only changes in Safari cross-website tracking settings helped to fix the issue So the question is - are there any official documentation about changes in cookie setting policy in Safari on iOS 18?
0
0
157
3w
Does Safari Web Push require a paid Apple Developer account (doubt with certificate)?
I need to implement push notifications in Safari. I already have a web app that can be added to the home screen. When researching push notifications in Safari, one of the things I found was that you don't need to be part of the Apple Developer Program to use this feature (text here). But when checking the requirements within the platforms, such as Pusher, they require a type of certificate that can only be generated with a paid account, that is, I need to participate in the Apple Developer Program. Pusher documentation: https://pusher.com/docs/beams/getting-started/web/configure-safari/ Now, I have many questions: Do I really need a paid account to issue the certificate? Can I issue the certificate via the web or only on a Mac? Do I really need this certificate?
1
0
179
3w
Fullscreen Api
Hi, i embedded vimeo video on the website and alreay make it allowfullscreen. However, when i open chrome/firefox on Ipad, the vidoe not showing fullscreen. Also on iPhone, when exit the fullscreen video. It doesnt hide the iframe element. Initially, i hide the iframe and implement button so that when user click on it, the video will display full screen
0
0
121
3w
Apple Map Snapshot API broken??
I have been using the following python library to generate apple map snapshots. has worked fine until about ~12 hours ago - now all I'm getting is "bad request" for any snapshot with overlays. if it's just a snapshot with a defined center and no polyline overlays, it still works. perhaps something has changed with the api's way of parsing percent encoded parameters? it's super irritating that there's no changelog or source code to view. what the heck??? https://pypi.org/project/mapsnap/
0
0
167
3w
Safari Responsive Design Mode Simulators are not showing up
On my M3 MacBook Pro 14'' laptop, when using Safari responsive design mode I cannot see any simulators when choosing "Open With Simulator". I am on the latest Sequoia 15.1 and Xcode version is 16.1. However when I successfully run a simulator from Xcode (Developer Tools -> Simulator) I can see the simulator running in the "Open With Simulator" dropdown but I cannot click it to run it with my safari desktop. I can never link my desktop safari app to a simulator. I feel I have read almost every how to blog but have no more options left to get this working. I've tried reinstalling Xcode and the iOS 18.1 environment on it, updating safari and anything else that might be out of date but still with no luck after much restarting programs and my machine. Is there another way to try and run a simulator from Safari?
0
0
195
3w
Journaling Suggestions is not available on iOS Simulator
Hey, when I try to run my project on an iOS Simulator, I get the following message: JournalingSuggestions is not available when building for iOS Simulator. and Linker command failed with exit code 1 (use -v to see invocation) Steps to reproduce this behavior: Create a new Xcode project Add the Journaling Suggestions Capability Add the Journaling Suggestions Framework Under "Target > Build Phases > Link Binary with Libraries", select “optional“ for JournalingSuggestions.framework Under "Target > Build Settings > Other Linker Flags > Debug" select „Plus“ and add „iOS or iOS Simulator“ and paste this -Xlinker -weak_framework -Xlinker JournalingSuggestions into the editable field. Do the same for "Target > Build Settings > Other Linker Flags > Release" This tread is about the same problem, but is already checked as answered. That's why I'm creating this new tread. The last two bullet points are results from advice from the other thread. MacBook Air, M1, 2020, macOS: 14.6.1, Xcode: 16.0 Thanks for your help! Got the wrong keywords, trying to create a new thread...
0
0
124
3w
Why is my .heic spatial image is not working on Safari using Vision Pro?
I'm working on a school project to build a webpage for Vision Pro users. I'm using Xcode to build this webpage because it has .reality files. This webpage only works on Safari because I took a spatial image with my Vision Pro, and it's .heic file type. I put the .png version below the .heic file that is supposed to have the spatial effect. I deployed this project on Vercel, please use Safari to check out the link: https://spatial-design-project.vercel.app There's another issue in this project, I downloaded the Cosmonaut .reality file on Apple Quick Look Gallery to test on my webpage. However, when I open it on Vision Pro, the file won't load, it says "Failed to load layers". Does it have something to do with the server for serving this file type? Should I use an actual web hosting company for this website? Here is my GitHub repo <div class="hero"> <div class="hero-text"> <h1>La Sal Peak</h1> <p>The Do-It-All Enduro Bike</p> </div> </div> <div class="hero2"> <div class="hero-text"> <h1>La Sal Peak</h1> <p>The Do-It-All Enduro Bike</p> </div> </div> .hero { position: relative; display: flex; align-items: flex-end; justify-content: flex-start; height: 100vh; background: url("assets/heroImage.heic") no-repeat center center/cover; color: white; } .hero2 { position: relative; display: flex; align-items: flex-end; justify-content: flex-start; height: 100vh; background: url("assets/hero.png") no-repeat center center/cover; color: white; }
0
0
192
3w
Private Web Certificate issue with iOS 18
We currently are using private web security certificates for our URLs. Our users download, install, and enable a Root Certificate on their devices to reach our website (trusted). The web security certificates have expirations that are less than 13 months from expiration. Since the deployment of iOS 18, our users are now getting a "This Connection is not Private" warning in the web browser on both Mac and iOS devices. What change was implemented in iOS 18 that is causing this issue? Other than changing our web security certificates to Public ones, what solutions should be implemented to prevent this from occurring?
0
0
239
4w
How to access shippingContact after transaction?
So I know I can request for an email in the paymentRequest requiredShippingContactFields and could also access minimal information with onshippingcontactselected, but how can I actually get the full shippingContact AFTER a transaction. The documentation doesn't say what API call this is returned with or anything, so please help! Relevant doc: https://developer.apple.com/documentation/apple_pay_on_the_web/applepaypayment/1916097-shippingcontact
0
0
181
Oct ’24