I guess you are using Capacitor.

I&#39;m running into the same issue as you and it looks like the last error about &#39;no background task exists&#39; has something to do with Capacitor&#39;s `BackgroundTask` Plugin, wether you&#39;re using it or not ([BackgroundTask.swift](https://github.com/ionic-team/capacitor/blob/e8a5464a03365a48642f959a0785eeb653c77149/ios/Capacitor/Capacitor/Plugins/BackgroundTask.swift))

It&#39;s clear something changed between iOS 12 and iOS 13, but so far haven&#39;t figured out how to define the required entitlements for background audio.

EDIT: It only happens when using HTML5 Audio.

I&#39;m getting the following error in my new angular project setup.

[Installed Packages and its versions][1]

&gt; ERROR Error: Uncaught (in promise): Error: It looks like your
&gt; application or one of its dependencies is using i18n. Angular 9
&gt; introduced a global `$localize()` function that needs to be loaded.
&gt; Please add `import &#39;@angular/localize&#39;;` to your polyfills.ts file.
&gt; Error: It looks like your application or one of its dependencies is
&gt; using i18n. Angular 9 introduced a global `$localize()` function that
&gt; needs to be loaded.

Note: I came from the following. It suggests falling back to old version.
https://github.com/angular/angular/issues/32508

  [1]: https://i.stack.imgur.com/2Fb18.png

Angular 9 introduced a global &#39;$localize()&#39; function that needs to be loaded

I&#39;m trying to understand this C# 8 simplification feature:

&gt; IDE0063 &#39;using&#39; statement can be simplified

For example, I have:

    void Method()
    {
        using (var client = new Client())
        {
            // pre code...
            client.Do();
            // post code...
        } --&gt; client.Dispose() was called here.
        // more code...
    }

IDE tells me I can simplify this `using` statement by writing this instead:

    void Method()
    {
        using (var client = new Client());
        // pre code...
        client.Do();
        // post code...
        // more code...
    }

I can&#39;t understand how it works and how it decides I&#39;m not `using` the variable anymore. More specifically, when exactly does it call `client.Dispose` method?


When does IDE0063 dispose?

I&#39;ve an app that uses **WkWebView** to play audio from Soundcloud, on iOS 13 Beta 6 the audio stops when the app is not in foreground,
even when **Audio** is on in **Background Modes**.

When starting the playback this assertion is thrown:

    Error acquiring assertion: &lt;NSError: 0x282cf67c0; domain: RBSAssertionErrorDomain; code: 2; reason: &quot;Required client entitlement is missing&quot;&gt; {
    userInfo = {
        RBSAssertionAttribute = &lt;RBSLegacyAttribute: 0x1592432e0; requestedReason: MediaPlayback; reason: MediaPlayback; flags: PreventTaskSuspend | PreventTaskThrottleDown | WantsForegroundResourcePriority&gt;;
    } 
   
And after entering background state, the following assertion is thrown and the audio is suspended:

    Can&#39;t end BackgroundTask: no background task exists with identifier 13 (0xd), or it may have already been ended. Break in UIApplicationEndBackgroundTaskError() to debug. 
    [ProcessSuspension] Background task expired while holding WebKit ProcessAssertion (isMainThread? 1).

This is not happening in iOS 12, where the audio plays normally when it is in background.


iOS 13 - WkWebView: audio stops when in background

I've an app that uses WkWebView to play audio from Soundcloud, on iOS 13 Beta 6 the audio stops when the app is not in foreground,
even when Audio is on in Background Modes.
When starting the playback this assertion is thrown:
<pre><code class="hljs language-css">Error acquiring assertion: &#x3C;NSError: 0x282cf67c0; domain: RBSAssertionErrorDomain; code: 2; reason: "Required client entitlement is missing"> {
userInfo = {
 RBSAssertionAttribute = &#x3C;RBSLegacyAttribute: 0x1592432e0; requestedReason: MediaPlayback; reason: MediaPlayback; flags: PreventTaskSuspend | PreventTaskThrottleDown | WantsForegroundResourcePriority>;
} 
</code></pre>
And after entering background state, the following assertion is thrown and the audio is suspended:
<pre><code class="hljs language-vbnet">Can't end BackgroundTask: no background task exists with identifier 13 (0xd), or it may have already been ended. Break in UIApplicationEndBackgroundTaskError() to debug. 
[ProcessSuspension] Background task expired while holding WebKit ProcessAssertion (isMainThread? 1).
</code></pre>
This is not happening in iOS 12, where the audio plays normally when it is in background.

I&#39;m building an app with SwiftUI. When I was trying to display a sheet (previously Modal), this error message appears:

```
Thread 1: Fatal error: No observable object of type BixiStationCombinedListViewModel.Type found.
A View.environmentObject(_:) for BixiStationCombinedListViewModel.Type may be missing as an ancestor of this view.
```

This error occurs when I&#39;m using a `@State` variable to display a modal that includes a `Map View` using MapKit.

I don&#39;t see why and how I should implement a new `Environment Object`.

Is it because the `Station` I select when tapping on the `CardView`  should be stored globally and the info should be passed to the dedicated `View`?


The `View` handling the `@State`:
```
struct CardView: View {
    
    @EnvironmentObject var bixiModel: BixiStationCombinedListViewModel
    @State private var isModalOpen: Bool = false
        
    var station: BixiStationCombinedViewModel
        
    var body: some View {
        
        ZStack(alignment: .leading) {
            
                Card()
                
                StationTextInfo(station: station)

        } .onTapGesture {
            self.isModalOpen = true
            print(self.isModalOpen)
        }
        .sheet(isPresented: self.$isModalOpen) {
            BixiStationDetailView(station: self.station)
        }

    }
}
```

The `View` I&#39;m trying to show within the sheet:
```
struct BixiStationDetailView: View {
    
    @EnvironmentObject var bixiModel: BixiStationCombinedListViewModel
        
    var station: BixiStationCombinedViewModel
    
    var body: some View {
        VStack {
            MapView(coordinate: station.coordinate, name: station.name)        
        }
    }
}
```

Finally the Object:
```
class BixiStationCombinedListViewModel: ObservableObject {
    
    init() {
        fetchDataFromApi()
    }
    
    @Published var stationsCombinedList = [BixiStationCombinedViewModel]()
    
    var stationsInformationList = [BixiStationInformationViewModel]()
    var stationsDataList = [BixiStationDataViewModel]()
        
    func fetchDataFromApi() {

        }        
    }
}
```

How can I get rid of the error message and display the proper `View`?

SwiftUI -&gt; Thread 1: Fatal error: No observable object of type MyObject.Type found (EnvironmentObject in sheet)

With following code: 

    struct HomeView: View {
        var body: some View {
            NavigationView {
    			List(dataTypes) { dataType in
    			    NavigationLink(destination: AnotherView()) {
    					HomeViewRow(dataType: dataType)
    				}
    			}
            }
        }
    }

What&#39;s weird, when `HomeView` appears, `NavigationLink` immediately loads the `AnotherView`. As a result, all `AnotherView` dependencies are loaded as well, even though it&#39;s not visible on the screen yet. The user has to click on the row to make it appear.
My `AnotherView` contains a `DataSource`, where various things happen. The issue is that whole `DataSource` is loaded at this point, including some timers etc.

Am I doing something wrong..? How to handle it in such way, that `AnotherView` gets loaded once the user presses on that `HomeViewRow`?

SwiftUI NavigationLink loads destination view immediately, without clicking

I have a project with multiple targets, such as an iOS app, a watchOS app, and some frameworks. How can I assign the same Swift Package to all my targets? Xcode only let&#39;s me select one:

[![SPM1][1]][1]

If I try to add the Swift Package again so I can try assigning it to another target in my project, I get an error:

[![SPM2][2]][2]

What is the correct way to do this? Below is what the package manifest looks like in the Swift Package. Is there something to be done on that side or something I have to do different in Xcode?

    import PackageDescription
    
    let package = Package(
        name: &quot;Alamofire&quot;,
        platforms: [
            .macOS(.v10_12),
            .iOS(.v10),
            .tvOS(.v10),
            .watchOS(.v3)
        ],
        products: [
            .library(
                name: &quot;Alamofire&quot;,
                targets: [&quot;Alamofire&quot;])
        ],
        targets: [
            .target(
                name: &quot;Alamofire&quot;,
                path: &quot;Source&quot;)
        ],
        swiftLanguageVersions: [.v5]
    )


  [1]: https://i.stack.imgur.com/xs8DO.png
  [2]: https://i.stack.imgur.com/DXKk5.png

Consume Swift Package for multiple targets and platforms in a project?

I want to change the placeholder color of the TextField, but I can&#39;t find a method for it.

I tried to set `foregroundColor` and `accentColor`, but it doesn&#39;t change the placeholder color.

Here is the code:

    TextField(&quot;Placeholder&quot;, $text)
        .foregroundColor(Color.red)
        .accentColor(Color.green)

Maybe there is no API for this yet?

SwiftUI. How to change the placeholder color of the TextField?

Yesterday, I uploaded my App to TestFlight and after a while Apple sent me this warning:

&gt; ITMS-90809: Deprecated API Usage - Apple will stop accepting submissions of apps that use UIWebView APIs . See https://developer.apple.com/documentation/uikit/uiwebview for more information.

The thing is that I don&#39;t use UIWebView in my app so I tried to update my pods but still the same thing.By the way this is my 3rd build on TestFlight and this is the first time apple sends me this. Any ideas?

**Update**

These are my pods:

    pod &#39;Firebase/Core&#39;
	pod &#39;Firebase/Firestore&#39;
	pod &#39;Firebase/MLVision&#39;
	pod &#39;Firebase/MLVisionTextModel&#39;
	pod &#39;SVProgressHUD&#39;
	pod &#39;SPPermission/Camera&#39;
	pod &#39;SPPermission/PhotoLibrary&#39;
	pod &#39;Mantis&#39;
	pod &#39;SwiftKeychainWrapper&#39;
	pod &#39;SwiftyOnboard&#39;
	pod &#39;Fabric&#39;
	pod &#39;Crashlytics&#39;

**Update 2** 

Seems like I found the frameworks with the issue.

    Binary file ./Pods/FirebaseMLCommon/Frameworks/FirebaseMLCommon.framework/FirebaseMLCommon matches
    Binary file ./Pods/Crashlytics/iOS/Crashlytics.framework/Crashlytics matches
    Binary file ./Pods/GoogleMobileVision/Detector/Frameworks/GoogleMobileVision.framework/GoogleMobileVision matches

So now do I have to wait for google to fix them and update my pods?





ITMS-90809: Deprecated API Usage -- Apple will stop accepting submissions of apps that use UIWebView APIs

Since I installed the **iOS 13.2 beta**, I have been getting a debug console error message. It happens every time I load a ViewController with a WKWebView object in the storyboard.


Then the following message is shown continuously while the web view is visible
...

    2019-10-10 12:10:47.867830+0200 (...) [Process] kill() returned unexpected error 1  
    2019-10-10 12:10:47.908698+0200 (...) [Process] kill() returned unexpected error 1  
    2019-10-10 12:10:47.908814+0200 (...) [Process] kill() returned unexpected error 1  
    2019-10-10 12:10:47.934169+0200 (...) [Process] kill() returned unexpected error 1  
    2019-10-10 12:10:47.947668+0200 (...) [Process] kill() returned unexpected error 1  
    2019-10-10 12:10:47.964375+0200 (...) [Process] kill() returned unexpected error 1  
    2019-10-10 12:10:48.193556+0200 (...) [Process] kill() returned unexpected error 1  
    2019-10-10 12:10:48.193723+0200 (...) [Process] kill() returned unexpected error 1  
    2019-10-10 12:10:48.193941+0200 (...) [Process] kill() returned unexpected error 1  
    2019-10-10 12:10:48.194012+0200 (...) [Process] kill() returned unexpected error 1  
    2019-10-10 12:10:48.195679+0200 (...) [Process] kill() returned unexpected error 1  
    2019-10-10 12:10:48.200432+0200 (...) [Process] kill() returned unexpected error 1  
    2019-10-10 12:10:48.207225+0200 (...) [Process] kill() returned unexpected error 1  
    2019-10-10 12:10:48.207298+0200 (...) [Process] kill() returned unexpected error 1 

At the moment I close the view I get the following message: 

    2019-10-10 12:32:41.577505+0200 (...)[ProcessSuspension] 0x1051e50b0 - ProcessAssertion::processAssertionWasInvalidated() 

Sometimes I get the following message in the middle while the web view is loaded: (I can&#39;t say when it happens)
 
    2019-10-10 12:33:11.453528+0200 (...) Could not signal service com.apple.WebKit.WebContent: 113: Could not find specified service
    2019-10-10 12:33:11.459713+0200 (...) Could not signal service com.apple.WebKit.Networking: 113: Could not find specified service

And the if I touch the screen it starts again

        2019-10-10 12:10:48.200432+0200 (...) [Process] kill() returned unexpected error 1  
        2019-10-10 12:10:48.207225+0200 (...) [Process] kill() returned unexpected error 1  
        2019-10-10 12:10:48.207298+0200 (...) [Process] kill() returned unexpected error 1 
    ...




I have checked that this is happening in all of the view controllers with WKWebViews of my app, so it doesn&#39;t seem to be a code error. 

This **doesn&#39;t crash the app**, but I would like to know why this is happening, and if someone else is having the same issue. 



Why I get the console warning: [Process] kill() returned unexpected error 1 when I load a WKWebView in iOS13.2?

So I have a `ScrollView` holding a set of views:

		ScrollView {
			ForEach(cities) { city in
				NavigationLink(destination: ...) {
					CityRow(city: city)
				}
				.buttonStyle(BackgroundButtonStyle())
			}
		}

In every view I have a drag gesture:

		let drag = DragGesture()
			.updating($gestureState) { value, gestureState, _ in
				// ...
			}
			.onEnded { value in
				// ...
			}

Which I assign to a part of the view:

		ZStack(alignment: .leading) {
			HStack {
				// ...
			}
			HStack {
				// ...
			}
			.gesture(drag)
		}

As soon as I attach the gesture, the `ScrollView` stop scrolling. The only way to make it scroll it to start scrolling from a part of it which has no gesture attached. How can I avoid it and make both work together. In UIKit is was as simple as specifying `true` in `shouldRecognizeSimultaneouslyWith` method. How can I have the same in SwiftUI?

In SwiftUI I&#39;ve tried attaching a gesture using `.simultaneousGesture(drag)` and `.highPriorityGesture(drag)` – they all work the same as `.gesture(drag)`. I&#39;ve also tried providing all possible static `GestureMask` values for `including:` parameter – I have either scroll working or my drag gesture working. Never both of them.


Here&#39;s what I&#39;m using drag gesture for:
[![enter image description here][1]][1]


  [1]: https://i.stack.imgur.com/CRhSi.gif

Adding a drag gesture in SwiftUI to a View inside a ScrollView blocks the scrolling

What is alternate of `scanHexInt32` in iOS 13 (Swift 5+)?

    extension UIColor {
        
        
        //--------------------------------------------
        class func hexColor(hex:String) -&gt; UIColor {
            var cString:String = hex.trimmingCharacters(in: CharacterSet.whitespacesAndNewlines).uppercased()
            
            if (cString.hasPrefix(&quot;#&quot;)) {
                cString = String(cString[cString.index(cString.startIndex, offsetBy: 1)...])
            }
            
            if (cString.count != 6) {
                return UIColor.gray
            }
            
            var rgbValue:UInt32 = 0
    
    // warning in this line - &#39;scanHexInt32&#39; was deprecated in iOS 13.0
            Scanner(string: cString).scanHexInt32(&amp;rgbValue)
            
            return UIColor(
                red: CGFloat((rgbValue &amp; 0xFF0000) &gt;&gt; 16) / 255.0,
                green: CGFloat((rgbValue &amp; 0x00FF00) &gt;&gt; 8) / 255.0,
                blue: CGFloat(rgbValue &amp; 0x0000FF) / 255.0,
                alpha: CGFloat(1.0)
            )
        }
    }


Ref: Snapshot

[![enter image description here][1]][1]


  [1]: https://i.stack.imgur.com/Ke1Za.png

&#39;scanHexInt32&#39; was deprecated in iOS 13.0

After Apple&#39;s iOS 13 release, I realized **`window.navigator.userAgent`** in Safari on iPad iOS 13 is same as on MacOS. Something like this:

```Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.0 Safari/605.1.15```

As you see, it&#39;s a wrong user-agent for iPad and there is no way to detect if the current device is an iDevice.

-----------------
After an initial research, I found a workaround for it:
&gt;Go to Settings -&gt; Safari -&gt; Request Desktop Website -&gt; All websites. You notice &quot;All websites&quot; is **enabled by default**. If you **disable** it and get window.navigator.userAgent the correct user agent is now displayed.

But I cannot ask each user to do this setting change for each device. So I tried to find another way and ended up by writing **the following code which checks if it&#39;s Safari, macOS, and touch-screen then the device should be an apple mobile device**, but I&#39;m wondering is there any better suggestion/way to detect the correct device name in Safari iOS 13?


```javascript
detectOs = function(){
   //returns OS name, like &quot;mac&quot;
};

//is Safari on an apple touch-screen device
isSafariInIdevice = function(){
   if (/Safari[\/\s](\d+\.\d+)/.test(windows.navigator.userAgent)) {
      return &#39;ontouchstart&#39; in window &amp;&amp; detectOs() === &quot;mac&quot;;      
   }
   return false;
};
```

How to detect device name in Safari on iOS 13 while it doesn&#39;t show the correct user agent?

I use `SwiftyStoreKit` to request In App Purchases and get only this error with iOS 13:

    Error: Optional(Error Domain=ASDErrorDomain Code=507 &quot;Error decoding object&quot; UserInfo={NSLocalizedDescription=Error decoding object, NSLocalizedFailureReason=Attempted to decode store response})

I cannot request information about the products, nor make purchases with a sand box account. However, it works fine in iOS 12.1 on my device. It does not work with the iPhone 11 simulator or an actual device with iOS 13.

I have found a lot, that the *Xcode 11 GM seed 1* beta simulator had this problem, but have not found a solution yet. I also tested it with the new released *Xcode 11 GM seed 2* version, but there was no fix for me.

Does anyone have a solution on how I can request and purchase In App Purchases again with iOS 13 installed?

Requesting an In App Purchase in iOS 13 fails

I have following code in my AppDelegate.swift to setup root view controller for an iOS application. But it does not work. It follows Target structure (defined under General tab) and ignores this code.

(Xcode 11, Swift 5.1, iOS 13)

    class AppDelegate: UIResponder, UIApplicationDelegate {
        
        var window: UIWindow?
        
        func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -&gt; Bool {
            
            window = UIWindow(frame: UIScreen.main.bounds)
            guard let rootVC = UIViewController() else {
                print(&quot;Root VC not found&quot;)
                return true
            }
            let rootNC = UINavigationController(rootViewController: rootVC)
            window?.rootViewController = rootNC
            window?.makeKeyAndVisible()
      
            return true
        }
    }

Unable to understand where is the issue. 

I tried following references also but no luck:

   - [Swift ios set a new root view controller][1]
   - [Root View Controller Swift][2]
   - [iOS: Root Controller Navigation][3]


  [1]: https://stackoverflow.com/questions/33374272/swift-ios-set-a-new-root-view-controller
  [2]: https://stackoverflow.com/questions/31062108/root-view-controller-swift
  [3]: https://medium.com/@stasost/ios-root-controller-navigation-3625eedbbff

Content Type	Original Author	Original Content on Stackoverflow
Question	Marco Martignone	View Question on Stackoverflow
Solution 1 - Swift	Kim Biesbjerg	View Answer on Stackoverflow

iOS 13 - WkWebView: audio stops when in background

Swift Problem Overview

Swift Solutions

Solution 1 - Swift

When does IDE0063 dispose?

Angular 9 introduced a global '$localize()' function that needs to be loaded

Attributions