قالب وردپرس درنا توس
Home / Tips and Tricks / Apple's iOS 13 Developer Beta 6 is now available for the iPhone «iOS & iPhone :: Gadget Hacks

Apple's iOS 13 Developer Beta 6 is now available for the iPhone «iOS & iPhone :: Gadget Hacks

If the tradition persists, we're about a month away from Apple's big iPhone announcement. We're curious what will be a major camera upgrade, but it's not all about the hardware. Apple will also release the official version of iOS 13 that complies with the iPhone XI. Previously, however, iOS 13 must be tested, and developer beta 6 has just appeared today.

This sixth developer beta comes nine days after iOS 13, developer beta 5. This update included a handful of new features and changes, such as: z moving targets for Apple Watch owners, separate groupings in Activity View (the new sharing sheet) for base actions and custom actions, as well as the LTE, 4G, and 5Ge icons in the status bar are larger, just to name a few.

The update Additionally, some helpful fixes for issues in Beta 4 and earlier have been introduced. Many of these fixes focused on patching third-party apps, such as WhatsApp, Instagram, and the Wells Fargo app. Another major fix was the iOS Mail app, which fixed an issue with sharing items directly from mail.

For iOS 1

3, developer beta 6, the release notes have not been released yet, and we did not have time to rummage through the changes. Until we get a chance to get into Beta 6 from developers, we can only speculate on what's new here. Our guess? The update will introduce a small number of new changes, but focus more on stability than on Flash. This is the trend we've seen in recent updates as bug fixes override important features.

Apple will release the Release Notes for iOS 13 Developer Beta 6 only a short time after the update releases. You can read the following notes on Dev Beta 5:

iOS & iPadOS 13 Developer Beta 5 Release Notes:


The SDK for iOS & iPadOS 13 includes support for Developing apps for iPhone, iPad, and iPod touch devices with iOS and iPadOS 13. The SDK comes with the beta version of Xcode 11, available through the beta software downloads. For Xcode 11 compatibility requirements, see the release notes for Xcode 11 Beta 4.

Developers using iOS 13 Beta 5 must also upgrade to Xcode 11 Beta 5.


Update your iPhone to the latest available version of iOS 13 Beta before you upgrade paired watches to watchOS 6 Beta or a newer version of watchOS 6 Beta. (51366653)

General – Known Issues

  • Some auto-detected links, such as: For example, flight numbers may not open while typing. (53416463)
  • Snapshots for apps using Metal may appear unexpectedly in the App Switcher. (53121694)

General – Obsolete

  • The UIApplicationExitsOnSuspend key is no longer supported in iOS and iPadOS 13. Update your apps to handle modern multitasking. (43958234)

Audio – New Features

  • The language processing mode can now be activated in AVAudioEngine. (50906329)
  • The new AVAudioNode types can be used to wrap a custom block to send or receive data in real time.
  • For an AVAudioEngine-based app, there's a new way to get a list of all attached nodes available to an AVAudioEngine instance.
  • A new render mode in AVAudioEnvironmentNode automatically selects the best spatial audio rendering algorithm based on the output device.
  • A new AVAudioSession property lets you play system sounds and haptics while the session is actively using audio input.
  • A new listing, AVAudioSession.PromptStyle, informs apps about what type of voice prompt they should play based on other audio activity in the system.
  • With AVAudioSession.RouteSharingPolicy, apps can now set route sharing policies for audio and video to routes to the same location as AirPlay.
  • Audio Unit extensions now support user preferences that are available to all host applications.

Audio – Obsolete

  • The OpenAL framework is outdated and still exists for compatibility. Transition to AVAudioEngine for spatial audio features.
  • AUGraph is no longer used in favor of AVAudioEngine.
  • Inter-app audio is no longer supported. Use Audio Units for this feature in the future.
  • Carbon Component-based Audio Units are outdated and will not be supported in future releases.
  • Legacy Core Audio HAL audio hardware plug-ins are no longer supported. Use audio server plug-ins for audio drivers in the future.

Audio Sharing – New Features

  • Audio sharing is compatible with AirPods (1st generation or later) and PowerBeats Pro. iPhone 8 or later, iPad Pro 12.9-inch (2nd generation or later), iPad Pro 11-inch, iPad Pro 10.5-inch, iPad (5th generation or later), iPad Air (3rd generation), iPad mini (5th generation), or iPod touch (7th generation or later) is required. (51331268)

AVFoundation – New Features

  • AVFoundation now supports encoding video with alpha channels using HEVC. Videos encoded in this way are widely supported in AVFoundation APIs and Safari on Web pages. Technical details about the format can be found in the specification of the interoperability profile. (8045917)

Core Haptics Known Issues

  • By default, haptics are disabled when microphone capture begins. You can override this by setting the AVAudioSession property allowHapticsAndSystemSoundsDuringRecording to true before enabling the audio session. (25811898)
  • Events such as audioContinuous, hapticContinuous, and audioCustom can not continue during the event. There is no output for this event, only for subsequent events. This applies to playback at a specific time offset as well as for searching and resuming. (29274583)
  • CHHapticDynamicParameter instances with non-zero relative times sent as part of a sendParameters (_: atTime 🙂 call to a CHHapticAdvancedPatternPlayer with the atTime parameter set to 0.0 are expected to be applied incorrectly at the beginning of the CHHapticPattern relative time not equal to zero. This does not occur with a CHHapticPatternPlayer. (46316890)
  • Both vibrations generated by AudioServicesPlaySystemSound (_ 🙂 and vibration patterns generated by the user-created automatic vibration user interface are muted compared to previous versions of iOS. (47448156)
  • Parameter curves are not supported with a CHHapticAdvancedPatternPlayer, only with a CHHapticPatternPlayer. No error is generated when passing a CHHapticPattern with a parameter curve to a CHHapticAdvancedPatternPlayer. (47891515)
  • When starting an app for the playback category, such as B. Music, in the background occurs a short audio distortion. For example, a brief distortion occurs when you launch the app from the Control Center while Core Haptics audio playback is already running using a "playAndRecord" audio session. (48121467)
  • After decompression into uncompressed floating-point samples, the total limit for all AudioCustom resources per process is eight megabytes. (48659023)
  • Multiple overlapping parameter curves for the same CHHapticDynamicParameter.ID may result in rendering artifacts. (50026384)
  • The maximum duration for a haptic-continuous haptic event is 30 seconds. Events that exceed this limit can be created and accepted by the CHHapticPatternPlayer. However, haptic playback disappears after 30 seconds. (51322525)

Core Image – New Features

  • The initializers init (imageURL: options 🙂 and init (imageData: options 🙂 do not support RAW version 5 and earlier. Version 6 and higher are still supported. (50911303)
  • New APIs have been added to instantiate and modify the built-in core image filters.
  • The CICoreMLModel filter has been enhanced to support models with an input or output of type MLFeatureType.multiArray.
  • Support for Metal CIKernel instances Arguments with arbitrarily structured data.
  • Metal CIKernel instances support the return of a group of 2 × 2 pixels.
  • The integer values ​​of CIFormat symbols, such as For example, ARGB8 has been changed to a new set of values ​​that are cross-platform consistent. The previous values ​​are still supported for backward compatibility. However, you should avoid dependencies on specific numeric values.

Device Management – Resolved Issues

  • Users can accept invitations to app and book assignments. (50832260)

Finding Known Issues

  • When you perform an action in "Find My Friends" that generates an email, you may see references to the "Find My Friends" and "Find My iPhone" apps. (51123613)
  • The function "Notify me if found" is currently not available.
  • Apple Pay cards may remain locked after a device has quit Lost mode.
  • While iOS and iPadOS 13 remain in beta, the offline search feature is On restricted.

HomeKit Known Issues

  • After viewing IP camera streams in the Home app, your device will not be put into sleep before the app is shut down. (52981554)

Home screen – resolved issues

  • Dragging app icons from Spotlight behaves as expected. (49004339)

iCloud Known Issues

  • The iCloud Drive section under Settings> General> iPhone Storage may not display the current status of the files on your device correctly. (50362095)
  • When creating a new page, number, or keynote document in a shared folder, the following message may be displayed: "Unable to connect to iCloud." (50827963) | Workaround: Close the document and reopen it.

iCloud resolved issues

  • If you manually start iCloud backup from Settings> iCloud Account> iCloud> iCloud Backup> Backup Now, the progress bar will display as expected. (51030266)

Localization Known Issues

  • Devices that are set to use specific languages ​​may have a truncated or misaligned layout. (51068688)
  • Devices that are set to use specific languages ​​may display unlocated text. (47765173, 51197936, 51270878)

Mail – New Features

  • Ignore Blocked Senders can now be enabled under Settings> Mail. The list of blocked contacts is shared with News, FaceTime, and Phone. (50775961)

Resolved e-mail issues

  • You can share images directly from e-mail. (50538771)

Messages – Known Issues

  • When you use messages in iCloud, you may be asked to repair your account, and your messages may not sync to other devices. (53406906)

Network – New Features

  • All URLSessionTask instances with a GET HTTP method that contain a body now generate the error NSURLErrorDataLengthExceedsMaximum. (46025234)

Network Known Issues

  • Starting with iOS 13 Beta 4, the copy attribute of the httpBody property is enforced by NSMutableURLRequest. If the main part data is mutated after calling the property setter, the data sent in the HTTP request will not include that mutation. Calling the property getter no longer returns an NSMutableData reference, even if the setter was called with data of that type. As of iOS 13 Beta 5, apps built with the iOS 12 SDK or earlier SDKs use legacy behavior. (53427882)

Network – Obsolete

  • Support for FTP and file URL schemes for automatic proxy configuration (PAC) has been removed. HTTP and HTTPS are the only supported URL schemes for PAC. This applies to all PAC configurations, including, but not limited to, configurations set using settings, system settings, profiles, and URLSession APIs such as connectionProxyDictionary and CFNetworkExecuteProxyAutoConfigurationURL (_: _: _: _ :). (28578280)
  • The URLSession and NSURLConnection APIs no longer support SPDY. Servers should use HTTP 2 or HTTP 1.1. (43391641)

Notes – Known Issues

  • Using Search in Notes can lead to unexpected results. (48238242)

Phone and FaceTime Fixed Issues

  • When upgrading to iOS 13 Beta, you can enter your SIM PIN as expected during the installation process. (51593059)

Screen Time Known Issues

  • When you enable device sharing, the screen time settings are not synchronized with iCloud until you restart your iOS device. Any changes you make to the screen time settings on this device before reboot will be lost. (50194586)

Display Timing Issues

  • Users can no longer select "One Minute" more than once per day once they reach the limit of an app. (48773803)

Settings – Known Issues

  • The Do Not Disturb settings may not be synchronized between your phone and the watch until both are upgraded to iOS 13 Beta 4 and watchOS 6 Beta 4. (52830669)
  • You may not be able to purchase mobile data tariffs on the iPad. (51735832, 51737229)

Sign in with Apple – Known Issues

  • The actual user state is currently unavailable. Signing in to Apple provides a status for new accounts, but the status can lead to unexpected results. (51765525)

Siri Known Issues

  • Link automations are temporarily unavailable. (53182885)
  • AirPods may unexpectedly disconnect when announcing messages with Siri is enabled, unless music is played when a new message is received. (50322025)
  • If you edit the intent definition file of an app and install the app, changes will not immediately appear in the shortcuts. (46645833) | Workaround: Stop and restart shortcuts after installing a new version of the app or creating and running the Intents extension in Xcode, which targets the Shortcuts app.
  • The supportOnDeviceRecognition property always returns false on the first access. If you access it again after a few seconds, the correct value is returned. (47822242)
  • Shortcuts opened on iOS and iPadOS 13 Beta are automatically updated and can no longer be opened on iOS 12. If an iOS 12 device and an iOS 13 device share an iCloud account, shortcuts can no longer be used on the device running iOS 12. (50873839) | Workaround: Disable iCloud syncing between iOS & iPadOS 13 Beta devices and iOS 12 devices.
  • If you tell Siri to take any action on reminders or messages, the application may quit unexpectedly. (50952938)
  • Currently the only supported answer for INSearchForMediaIntent is INSearchForMediaIntentResponseCode.continueInApp. (51010311)
  • When Siri Announce Messages is on, music playback may be interrupted when a message is read. (51243455)

SwiftUI – New Features

  • You can now create a color from a UIColor or NSColor. (49833933)
  • NSManagedObject now corresponds to ObservableObject. The new @FetchRequest property wrapper can control views from the results of a fetch request, and managedObjectContext is now included in the environment. (50280673)
  • Gesture modifiers are renamed for consistency. For example, tapAction (count: _ 🙂 is renamed onTapGesture (count: perform :), and longPressAction (minimumDuration: maximumDistance: _: pressing 🙂 is renamed onLongPressGesture (minimumDuration: maximumDistance: performing :). (50395282)
  • Text now has a default line limit of zero, wrapping it by default. (51147116)
  • ContentSizeCategory and several other enumerations are now case-sensitive. (51168712)
  • SegmentedControl is now a picker style. (51769046)
  • BindableObject is replaced by the ObservableObject protocol from the Combine framework. (50800624)
  • You can manually customize ObservableObject by defining an objectWillChange publisher that will be issued before the object changes. By default, however, ObservableObject automatically synthesizes objectWillChange and issues it before @ Published properties change.

// RoomStore.swift
import Foundation

class RoomStore: ObservableObject {
@Published var rooms: Room =

struct Room: Identifiable {
var id: UUID
var name: String
var capacity: int
var hasVideo: Bool

// ContentView. swift
import SwiftUI

struct ContentView: View {
@ObservedObject var store: RoomStore

var body: some View {
NavigationView {
List (store.rooms) {room in
RoomCell (Room: Room)
.navigationBarTitle ("Rooms")

@ObjectBinding is replaced by @ObservedObject

  • The log is now part of the Swift standard library. As a result, your model files no longer need to import the SwiftUI framework. (SE-0261)
  • The EnvironmentValues ​​structure has four new properties for reading accessibility values ​​from the environment: accessibilityDifferentiateWithoutColor, accessibilityReduceTransparency, accessibilityReduceMotion, and accessibilityInvertColors. (51712481)
  • The modifier color (_ 🙂 for text is renamed to foregroundColor (_ 🙂 to ensure consistency with the more general view modifier foregroundColor (_ :). (50391847)
  • The BindableObject protocol's request is now willChange instead of didChange and should now be sent before the object changes instead of being changed. This change allows improved merging of change messages. (51580731)
  • The RangeReplaceableCollection protocol has been extended by a remove method (atOffsets 🙂 and the MutableCollection protocol by a move method (fromOffsets: toOffset :). Each new method uses IndexSet instances that you use with the onMove (perform 🙂 and onDelete (perform 🙂 modifiers in ForEach views. (51991601)
  • Added improved display modifiers: sheet (isPresented: onDismiss: content :), action sheet (isPresented: content 🙂 and warning (isPresented: content 🙂 – along with isPresented in the environment – replace the existing presentation (_ :), Sheet, Modal, and PresentationLink types. (52075730)
  • The APIs for creating animations have been updated. The basic animations are now named after the curve type, eg. B. linear and easeInOut. The interpolation-based feather (mass: stiffness: damping: initial velocity 🙂 animation now interpolates Spring (mass: stiffness: damping: initial velocity 🙂 and FluidSpring (stiffness: damping fraction: mixture duration: time step: idle threshold 🙂 is now Spring (answer: dampingFraction: blendDuration 🙂 or interactiveSpring (reaction: dampingFraction: blendDuration :), depending on whether the animation is controlled interactively or not. (50280375)
  • An initializer for creating a font from a CTFont has been added. (51849885)
  • You can format a navigation view with two new style properties: StackNavigationViewStyle and DoubleColumnNavigationViewStyle. By default, navigation views on the iPhone and Apple TV visually mirror a navigation stack, while a split-view navigation view is displayed on the iPad and Mac. (51636729)
  • If you use the DoubleColumnNavigationViewStyle style, you can provide two views when you create a navigation view – the first is the master and the second is the detail. Example:

NavigationView {
MyMasterView ()
MyDetailView ()
.navigationViewStyle (DoubleColumnNavigationViewStyle ())

SwiftUI Known Issues Structure may crash apps when using the SDKs included with Xcode 11 Beta 5. (53523206)

  • Using a ForEach view with a complex expression when closing may lead to compiler errors. | Workaround: Extract these expressions into their own view types. (53325810)
  • Context menus may be displayed incorrectly or your app may crash unexpectedly. (53461370)
  • Image instances do not use resizing information configured in asset catalogs. Instead, reconfigure the size of an image with the modifier resizable (capInsets: resizingMode :). (49114577)
  • SwiftUI – Resolved Issues

    • Moving a view from a navigation link to an item in a list displays button instances with the correct text color in the moved view. (52858284)

    SwiftUI – Obsolete

    • NavigationDestinationLink and DynamicNavigationDestinationLink are deprecated. Its functionality is now included in NavigationLink. (50630794)
    • The type length is replaced by CGFloat. (50654095)
    • TabbedView is now called TabView. (51012120)
    • HAlignment and VAlignment are now obsolete. Instead, use the more flexible HorizontalAlignment or VerticalAlignment types and use TextAlignment for text. (51190531)
    • The SelectionManager log has been removed. Use the instances Optional and Set directly for the selection. (51557694)
    • The environment value isPresented is deprecated and is replaced by the more general representationMode. (51641238)
    • The StaticMember log is out of date. Instead, use directly protocol-compliant types. For example, use an instance of WheelPickerStyle directly instead of the static wheel element. (52911961)
    • Complex overloads on the background (_: alignment 🙂 and border (_: width 🙂 modifiers are deprecated. Use shapes in a background (_: alignment 🙂 or overlay (_: alignment 🙂 to draw them instead. (53067530)
    • SwiftUI APIs outdated in previous betas have been removed. (52587863)
    • The identified (by 🙂 method in the collection log is no longer recommended in favor of the dedicated initializers init (_: id: selection: rowContent 🙂 and init (_: id: content :). (52976883, 52029393)
    • The retrospective compliance of Int with the identifiable protocol has been removed. Modify any code that relies on this conformance to pass itself to the id parameter of the corresponding initializer. Constant ranges of Int are still accepted:

    List (0 .. <5) {
    Text ("spaces")

    However, you should not pass an area that changes at run time. If you use a variable that changes at run time to define the range, the list will display the views according to the original range and any subsequent updates to the range will be ignored.

    • Various extensions to the binding structure are removed. (51624798)

    If you have the following code:

    struct LandmarkList: View {
    var landmark: Landmark
    @Binding var favorites: Set

    var body: some View {
    List (Landmarks) {Landmark in
    Toggle (landmark.name, isOn: self. $ Favorites.contains (landmarkID))

    Define the following index for the set structure:

    extension set {
    index (member: element) -> bool {
    get {contains (member)}
    set {
    if newvalue {
    insert ( member)
    } else {
    remove (member)

    Then change self. $ favorites.contains (landmarkID) in self. $ favoritelandmarkID.

    • The conditional compliance of the binding structure with the collection log has been removed. (51624798)

    If you have the following code:

    struct LandmarkList: View {
    @Binding var landmark: Landmark

    var body: some View {
    List (landmarks) {landmark in
    Toggle (marker.value.name, isOn: landmark .isFavorite)

    Define the following collection type:

    struct IndexedCollection : RandomAccessCollection {
    typealias Index = Base.Index
    typealias Element = (Index: Index, Element: Base.Element)

    let base: Base

    var startIndex: Index {base.startIndex}

    var endIndex: Index {base.startIndex}

    Function index (after i: index) -> index {
    base.index (after i)

    Function index (before i: index) -> index {
    base.index (before: i)

    Function index (_ i: index, OffsetBy distance: int) -> index {
    base.index (i, OffsetBy: distance)
    } [19659002] Index (Position: Index) -> Element {
    (Index: Position, Element: Base Position)

    Extension RandomAccessCollection {
    func indexed () -> IndexedCollection {
    IndexedCollection (base: self)

    Then update your code to:

    struct LandmarkList: View {
    @Binding var landmarks: Landmark

    var body: some View {
    List (landmarks.indexed (), id: .1.id) {(Index, Landmark) in
    Toggle (landmark name, isOn: self. $ landmarksindex.isFavorite)
    } [19659123] The modifiers relativeWidth (_ :), relativeHeight (_ :), and relativeSize (width: height 🙂 are deprecated. Instead, use other modifiers, such as frame (minWidth: idealWidth: maxWidth: minHeight: idealHeight: maxHeight: alignment :). (51494692)

    Third-party apps – Known issues

    • You may not be able to stream data to a Chromecast device. (51334673)

    Third-party apps – resolved issues

    • Audio plays correctly in Instagram stories. (50433755)
    • WhatsApp behaves as expected when forwarding messages to a user who is not in the Recent Contacts list. (45416129)
    • WhatsApp users no longer receive duplicate notification or content-less notifications. (50537131)
    • The Wells Fargo app no ​​longer quits unexpectedly when you open or log in. (51085418)

    UIKit – New Features

    • The UITableViewCell class no longer modifies the backgroundColor or isOpaque properties of the contentView and its subviews when cells are highlighted or selected. If you set an opaque background color for subviews of the cell inside (and including) the content view, this may affect the appearance when the cell is highlighted or selected. The easiest way to fix problems with your subviews is to make sure the backgroundColor property is null or clear and the opaque property is set to false. However, if necessary, you can override the setHighlighted (_: animated 🙂 and setSelected (_: animated 🙂 methods to manually change these properties in your subviews when you move to or from the highlighted and selected states. (13955336)
    • Since iOS 8, to use UISearchController with UINavigationController, the controller's definePresentationContext property must be set to true for the top view. Andernfalls können subtile Fehler auftreten, die sich nur schwer erkennen und beheben lassen. Ab iOS und iPadOS 13 Beta setzt UINavigationController die definePresentationContext-Eigenschaft des View Controllers automatisch auf true, wenn das navigationItem eines View Controllers einen searchController ohne Null enthält, wenn der View Controller in einem Navigationscontroller angezeigt wird. Wenn Sie auf frühere Versionen von iOS abzielen, legen Sie diese Eigenschaft fest, bevor Ihr Suchcontroller aktiv wird. (31338934)
    • Die UIRefreshControl-Klasse ändert den contentInset ihrer Bildlaufansicht nicht mehr direkt. Stattdessen werden die Anpassungen des Inhalts-Insets in das adjustierte Inhalts-Set der Bildlaufansicht übernommen. Die einzige Ausnahme besteht darin, dass das contentInsetAdjustmentBehavior der Bildlaufansicht auf UIScrollView.ContentInsetAdjustmentBehavior.never festgelegt ist. In diesem Fall ändert die UIRefreshControl-Instanz das contentInset direkt wie in früheren Versionen. (35866834)
    • Wenn Sie in einer UITableView Zellen mit automatischer Größenänderung implementieren, indem Sie sizeThatFits (_ 🙂 überschreiben, ohne das automatische Layout zu verwenden, wird die zurückgegebene Höhe als die gewünschte Höhe für die Inhaltsansicht der Zelle interpretiert, und UITableViewCell fügt automatisch alle hinzu zusätzliche Höhe erforderlich, um Platz für den Zellentrenner zu lassen. Wenn Sie die manuelle Größenanpassung auf diese Weise implementieren, ist die contentView-Breite der Zelle garantiert genau, damit Sie sie bei manuellen Layoutberechnungen verwenden können, wenn sizeThatFits (_ 🙂 für die UITableViewCell aufgerufen wird. (39742612)
    • In Merkmalumgebungen wie Ansichten und Ansichtscontrollern wird die Eigenschaft traitCollection jetzt während der Initialisierung mit Merkmalen gefüllt. Diese anfänglichen Merkmale stellen eine Vorhersage der endgültigen Merkmale dar, die die Merkmalumgebung erhält, wenn sie der Hierarchie hinzugefügt wird. Da es sich bei den Merkmalen, die während der Initialisierung ausgefüllt werden, nur um Vorhersagen handelt, können sie sich von den Merkmalen unterscheiden, die tatsächlich in der Hierarchie einmal empfangen werden. Warten Sie daher nach Möglichkeit mit der Ausführung von Arbeiten, die die traitCollection verwenden, bis die Ansicht oder die Ansicht des Ansichtscontrollers in die Hierarchie verschoben wurde. Das bedeutet, dass das Fenster einen Wert ungleich Null zurückgibt, sodass Sie keine Arbeit wegwerfen müssen erfolgt unter Verwendung der vorhergesagten Merkmale, wenn die tatsächlichen Merkmale unterschiedlich sind. Die Verwendung der traitCollection empfiehlt sich während des Layouts, z. B. innerhalb von layoutSubviews (), viewWillLayoutSubviews () oder viewDidLayoutSubviews ().
    • Die Methode traitCollectionDidChange (_ 🙂 wird nur aufgerufen, wenn sich der Wert eines Merkmals ändert. Wichtig ist, dass traitCollectionDidChange (_ 🙂 nicht aufgerufen wird, wenn die ursprünglichen vorhergesagten Merkmale den endgültigen Merkmalen in der Hierarchie entsprechen, da die Merkmalauflistung jetzt mit einer Vorhersage der endgültigen Merkmale in der Zielhierarchie initialisiert wird Die Hierarchie. Da es sich bei traitCollectionDidChange (_ 🙂 um einen Invalidierungsrückruf handelt, mit dem Sie benachrichtigt werden, dass sich eines oder mehrere Merkmale geändert haben, überprüfen Sie Ihre vorhandenen Implementierungen dieser Methode sowie die UIContentContainer-Methode willTransition (to: with :), um festzustellen, wo Sie möglicherweise sind Ich habe mich darauf verlassen, um die Ersteinrichtung auszulösen. Der beste Ort, um Arbeiten, die die traitCollection verwenden, faul auszuführen, ist eine der oben diskutierten layoutSubviews-Methoden. Denken Sie jedoch daran, dass diese Layoutmethoden jedes Mal aufgerufen werden, wenn Layout auftritt. Vermeiden Sie daher, die Arbeit zu wiederholen, wenn dies nicht erforderlich ist. (46818941)
    • Sie können jetzt die Debugprotokollierung aktivieren, um zu sehen, wann traitCollectionDidChange (_ 🙂 oder willTransition (to: with 🙂 für Ihre eigenen Klassen aufgerufen wird. Aktivieren Sie die Protokollierung mit dem folgenden Startargument: -UITraitCollectionChangeLoggingEnabled YES. Möglicherweise möchten Sie den Main Thread Checker vorübergehend deaktivieren, während Sie dieses Startargument verwenden und Ihre App über Xcode ausführen, um zusätzliche Protokollnachrichten für nicht verwandte Klassen zu vermeiden. (47858564)
    • Die contentView -Eigenschaft der UITableViewCell-Klasse wird immer randlos mit angrenzendem Zubehör sowohl an der vorderen als auch an der hinteren Seite angeordnet. Dadurch wird der Layoutcode optimiert, sodass Entwickler, die den richtigen Standardversatz wünschen, ihren Inhalt nicht mehr am Rand der Inhaltsansicht oder am Layoutrand ausrichten müssen, je nachdem, ob sich auf der nachfolgenden Seite ein Zubehör befindet oder nicht. Sie sollten ihren Code jetzt immer an den Layouträndern der Inhaltsansicht der Zelle auslegen, um die Standardsystemeinfügungen zu erhalten. Diese Einsätze werden basierend auf dem in der Zelle sichtbaren Zubehör automatisch an den Standardabstand des Systems angepasst. (48214114)
    • Sie können jetzt einen benutzerdefinierten Initialisierer aus einem Erstellungsblock aufrufen, der über instantiateInitialViewController (creator 🙂 oder instantiateViewController (identifier: creator 🙂 übergeben wird. This makes it possible for you to initialize view controllers with additional context and arguments, while taking advantage of defining them in a storyboard through Interface Builder. A custom controller initializer must call its super.init(coder:) method and pass the coder argument that it receives through the creation block. (48313869)

    UIKit – Known Issues

    • Specifying UIWindowScene.DestructionRequestOptions in Swift is currently unavailable. (51036709)

    UIKit – Resolved Issues

    • Prior to iOS 13, UITextField assumed that the frames of its leftView and rightView were correctly set when assigned and would never change. Starting in iOS 13, the implementation of leftViewRect(forBounds:) and rightViewRect(forBounds:) now ask the view for its systemLayoutSizeFitting(_:). To achieve the previous behavior when linking against and running on iOS 13, add explicit sizing constraints on the view, wrap it in a plain UIView, or subclass the view and implement systemLayoutSizeFitting(_:). (51787798)

    Voice Control – Resolved Issues

    • After you enable Voice Control for the first time, resources begin downloading and a progress indicator displays. (50788121)

    Watch – Known Issues

    • Complications might disappear from Apple Watch after updating to iOS 13 beta if your watch isn&#39;t running watchOS 6 beta. (50507942)

    Xcode – New Features

    • CAMetalLayer is now available in Simulator. (45101325)

    Xcode – Known Issues

    • Donated shortcuts might not appear in Search while using the simulator. (50832782) | Workaround: Test on a device with Settings > Developer > Display Recent Shortcuts enabled.
    • Changing the volume level in Simulator while a video is playing in Safari mutes the audio. (51207286)

    To update your iPhone to iOS 13 dev beta 6, you will need to be a registered developer. You can use the restore image for your iPhone available in the Developer portal (install with iTunes or Finder) or install the configuration profile then update over the air. If you already have the profile installed on your iPhone, head over to Settings –> General –> Software Update to start installing the latest beta build, or you can wait until it installs automatically if "Automatic Updates" is enabled.

    Source link