Apple Releases iOS 13 Beta 8 to Developers "iOS & iPhone :: Gadget Hacks

iOS & iPadOS 13 Developer Beta 8 Release Notes:

Overview

The iOS & iPadOS 13 SDK provides support for developing apps for iPhone, iPad, and iPod touch devices running iOS & iPadOS 13. The SDK comes bundled with Xcode 11 beta available from Beta Software Downloads. For information on the compatibility requirements for Xcode 11, see Xcode 11 Beta 5 Release Notes.

Developers using iOS 13 beta 6 must also update to Xcode 11 beta 5.

Warning

If your watch is running watchOS 6 beta, you must update it to watchOS 6 beta 2 or later to update to iOS 13 beta 6, otherwise your watch will be able to connect to your phone. (52854192)

General – Known Issues

• Snapshots for apps that use Metal might have an unexpected appearance in the App Switcher. (53121694)

General – Deprecations

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

Audio – New Features

• Voice Processing mode can now be enabled on AVAudioEngine. (50906329)
• New AVAudioNode types can be used to wrap a user-defined block for sending or receiving data in real time.
• A new method is available for an AVAudioEngine-based app to retrieve a list of all nodes attached to an AVAudioEngine instance.
• A new rendering mode in AVAudioEnvironmentNode selects the best spatial audio rendering algorithm based on the output device.
• A new AVAudioSession property allows you to listen to sounds and haptics.
• A new enumeration, AVAudioSession.PromptStyle, informs apps which style of voice prompt they should play based on other audio activity in the system.
• AVAudioSession.RouteSharingPolicy now permits apps to specify route-sharing policies so their audio and video routes to the same location as AirPlay.
• Audio Unit Extensions now support user presets that are available across all host applications.

Audio – Deprecations

• The OpenAL framework is deprecated and remains present for compatibility purposes. Transition to AVAudioEngine for spatial audio functionality.
• AUGraph is deprecated in favor of AVAudioEngine.
• Inter-App audio is deprecated. Use Audio Units for this feature moving forward.
• Carbon component-based Audio Units are deprecated and will be removed in a future release.
• Legacy Core Audio HAL audio hardware plug-ins are no longer supported. Use audio server plug-ins for audio drivers moving forward.

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 manner are broadly supported in AVFoundation APIs, and by Safari within web pages. Technical details of the format can be found in the Interoperability Profile specification. (8045917)

Core Haptics – Known Issues

• By default, haptics are disabled when microphone recording begins. You can override this by setting the AVAudioSession property allowHapticsAndSystemSoundsDuringRecording to true before activating its audio session. (25811898)
• Events – such as audioContinuous, hapticContinuous, and audioCustom – can not be resumed during the event; no output occurs for that event, only for subsequent events. This applies to a specific time offset, seeking, and resuming. (29274583)
• CHHapticDynamicParameter instances with nonzero relative times that are sent as part of a sendParameters (_: atTime 🙂 call on a CHHapticAdvancedPatternPlayerwith the atTime parameter set to 0.0 are incorrectly applied to the beginning of the CHHapticPattern, instead of the expected nonzero relative time. This does not occur on CHHapticPatternPlayer. (46316890)
• Both vibrations generated through AudioServicesPlaySystemSound (_ 🙂 and vibration patterns generated through the user-created tap-to-vibrate UI are attenuated when compared to prior versions of iOS. (47448156)
• Parameter Curves are not supported with a CHHapticAdvancedPatternPlayer, only a CHHapticPatternPlayer. No error is generated when a CHHapticPattern containing a Parameter Curve is passed to a CHHapticAdvancedPatternPlayer. (47891515)
• Brief audio distortion occurs when starting a Playback category For example, this is the first time that you want to use the Control Center while Core Haptics audio playback is using a playAndRecord audio session is already underway. (48121467)
• Uncompressed floating-point samples, the total limit on all audioCustom resources per process is eight megabytes. (48659023)
• Multiple overlapping Parameter Curves for the same CHHapticDynamicParameter.IDmight result in artifacts playback. (50026384)
• The maximum duration for a haptic Continuous haptic event is 30 seconds. Events exceeding this limit can be made and accepted by CHHapticPatternPlayer, but haptic playback will fade out after 30 seconds. (51322525)

Core Image – New Features

• The init (imageURL: options 🙂 and init (imageData: options) initializers no longer support RAW version 5 and earlier. Version 6 and later remain supported. (50911303)
• Added new APIs for instantiating and modifying the built-in Core Image filters.
• The CICoreMLModel is an MLFeatureType.multiArray.
• Metal CIKernel instances support arguments with arbitrarily structured data.
• Metal CIKernel support instances returning a group of 2 × 2 pixels.
• The integer values ​​of CIFormat symbols, such as ARGB8, have changed to a new set of values ​​that are consistent across platforms. The form values ​​remain supported for backward compatibility; however, you should avoid dependancies on specific numerical values.

Find My – Known Issues

• When performing an action in Find My email, you can find my friends My iPhone apps. (51123613)
• While iOS & iPadOS 13 remains in beta, offline-finding capability is limited.

Health – Known Issues

• Cycle Length in Cycle Tracking options. Ensure your period is shorter than your Cycle Length. (54313089)

iCloud – Known Issues

• After updating to iOS 13 beta 6, iCloud Drive might be synchronized for an extended period of time. If you are missing any files, they can be found on a Recovered Files folder under On My iPhone / iPad within the Files app. (53772753)
• When creating a new Pages, Numbers, or Keynote document in a shared folder, you might see the message: "Could not connect to iCloud." (50827963) workaround: Close and reopen the document.

iCloud – Resolved Issues

• The iCloud Drive section in Settings> General> iPhone Storage might be inaccurately displayed on your device. (50362095)

Localization – Resolved Issues

• Devices set to use certain languages ​​no longer displayed clipped or misaligned layout. (51068688)
• Devices set to use certain languages ​​no longer display unlocalized text. (47765173, 51197936, 51270878)

Mail – New Features

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

Music – Known Issues

• The state of the Sync Library switches in Settings> Music might be inaccurately reflected in the current state of the feature on your device. If you do not want the feature enabled, ensure the switch is off. If your music library does not appear to be in sync with other devices, try to switch the switch off then on again. (53957863)

Networking – New Features

• To enhance security, URLSession no longer sniffs the MIME type when the server sends Content-Type: application / octet-stream. (7820658)
• NSURLRequest.CachePolicy.reloadRevalidatingCacheData and NSURLRequest.CachePolicy.reloadIgnoringLocalAndRemoteCacheData APIs are now available. (49660334)
• Starting with iOS 13 beta 4, the copy attribute of the httpBodyStream property of NSMutableURLRequest is enforced. If the body data is mutated after the property setter has been called, data sent in the HTTP request will not include that mutation. Invoking the property getter no longer returns to NSMutableData reference, even when the setter was invoked with data of that type. As of iOS 13 beta 5, apps built using the iOS 12 SDK or previous SDKs use the legacy behavior. (53427882)
• The CNCopyCurrentNetworkInfo API has changed to address privacy. Please refer to the latest API documentation and headers for more details. (52707167)
• All URLSessionTask instances with a GET HTTP method that contain a NSURLErrorDataLengthExceedsMaximum. (46025234)

Networking – Known Issues

• The urlSession (_: taskIsWaitingForConnectivity 🙂 delegate callback might not function as expected. (54309264)

Networking – Deprecations

• Removed support for FTP and File URL schemes for Proxy Automatic Configuration (PAC). HTTP and HTTPS are the only supported URL schemes for PAC. This affects all PAC configurations including, but not limited to, configurations using Settings, System Preferences, Profiles, and URLSession APIs such as connectionProxyDictionaryand 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 might produce unexpected results. (48238242)
• If you select colored drawing with the lasso tool and then rotate your device to landscape mode, the strokes will revert to black. (54246012)

PencilKit – Known Issues

• If your app links PencilKit, please send an email to the App Store. (53811027)

Reality Kit – Known Issues

• Reality Files with object anchors in AR Quick Look or in applications. (53689364)

• The camera feed will be visible at the base of objects loaded from a Reality File when ARView.Environment.Background is set to ARView.Environment.Background.skybox (_ 🙂 (53715030) – workaround: Turn off grounding shadows when setting the background to ARView.Environment.Background.skybox (_ 🙂 by setting ARView.RenderOptions to disableGroundingShadows.

Screen Time – Known Issues

• If you enable Share Across Devices, your iOS device is restarted. Any edits you make to your Screen Time. (50194586)

Siri – Known Issues

• Shortcuts automations are temporarily unavailable. (53182885)
• The supportsOnDeviceRecognition property always returns false the first time it's accessed. After a few seconds, it still returns the correct value. (47822242)
• Shortcuts opened on iOS & iPadOS 13 beta are automatically upgraded and can not be opened on iOS 12. If a device with iOS 12 and a device with iOS 13 share an iCloud account, shortcuts might become unusable on the device running iOS 12. ( 50873839) workaround: Disable iCloud Sync between iOS devices running iOS & iPadOS 13 beta and running devices iOS 12.
• Currently, the only supported response for INSearchForMediaIntent is INSearchForMediaIntentResponseCode.continueInApp. (51010311)

SwiftUI – New Features

• You can now create a Color from a UIColor or NSColor. (49833933)
• NSManagedObject now conforms to ObservableObject. The new @FetchRequestproperty wrapper can be viewed 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: pressing: perform :). (50395282)
• Text now has a default line limit of nil so it wraps by default. (51147116)
• ContentSizeCategory and several other enumerations are now CaseIterable. (51168712)
• SegmentedControl is now a style of Picker. (51769046)
• BindableObject is replaced by the ObservableObject protocol from the Combine framework. (50800624)

You can manually conform to ObservableObject by defining an objectWillChangepublisher that emits before the object changes. However, by default, ObservableObjectautomatically synthesizes objectWillChange and emits before any @Publishedproperties changes.

// 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 Identifiable protocol is now part of the Swift standard library. As a result, your model files do not need to import the SwiftUI framework. (SE-0261)
• The EnvironmentValues ​​structure has accessibility features: accessibilityDifferentiateWithoutColor, accessibilityReduceTransparency, accessibilityReduceMotion, and accessibilityInvertColors. (51712481)
• The color (_ 🙂 edit for Text is renamed foregroundColor (_ 🙂 for more general foregroundColor (_ 🙂 view edit. (50391847)
• The BindableObject protocol's requirement is now willChange instead of didChange, and should now be changed before it changes. This change allows for improved coalescing of change notifications. (51580731)
• The RangeReplaceableCollection protocol is extended to include a (atOffsets 🙂 method and the MutableCollection protocol is extended to include a move (fromOffsets: toOffset 🙂 method. Each new method takes IndexSetinstances that you use with the onMove (perform 🙂 and onDelete (perform:) modify on ForEach views. (51991601)
• Enhanced presentation: Modify: sheet (isPresented: onDismiss: content :), actionSheet (isPresented: content :), and alert (isPresented: content) – along with isPresented in the environment – replace the existing presentation (_ :), Sheet, Modal, and PresentationLink types. (52075730)
• Updated the APIs for creating animations. The basic animations are now named after the curve type – such as linear and easeInOut. The interpolation-based spring (mass: stiffness: damping: initialVelocity 🙂 animation is now interpolatingSpring (mass: stiffness: damping: initialVelocity :), and fluidSpring (stiffness: dampingFraction: blendDuration: timestep: idleThreshold 🙂 is now spring (response: dampingFraction: blendDuration 🙂 or interactiveSpring (response: dampingFraction: blendDuration :), depending on whether or not the animation is driven interactively. (50280375)
• Added an initializer for creating a Font from a CTFont. (51849885)
• StackNavigationViewStyle and DoubleColumnNavigationViewStyle. By default, navigation views on iPhone and Apple TV visually reflects a navigation stack, while on iPad and Mac, has split-view styled navigation view displays. (51636729)

When using the DoubleColumnNavigationViewStyle style, you can provide two views when creating a navigation view – the first is the master and the second is the detail. For example:

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

Swift – Known Issues

• Image instances do not use resizing information configured in asset catalogs. Configure the size of an image using the resizable (capInsets: resizingMode 🙂 edit instead. (49114577)

Swift – Deprecations

• SwiftUI APIs deprecated in previous versions of iOS 13 beta have been removed. (53310683)
• NavigationDestinationLink and DynamicNavigationDestinationLink are deprecated; their functionality is now included in NavigationLink. (50630794)
• The Length type is replaced by CGFloat. (50654095)
• TabbedView is now named TabView. (51012120)
• HAlignment and VAlignment are now deprecated, use the more flexible HorizontalAlignment or VerticalAlignment types instead TextAlignment for text. (51190531)
• The SelectionManager protocol is removed, using Optional and Set instances directly for selection. (51557694)
• The value environment is deprecated and replaced by the general presentation mode value. (51641238)
• The StaticMember protocol is deprecated. Use protocol-conforming types directly instead. For example, use an instance of WheelPickerStyle directly rather than the wheel static member. (52911961)
• Complex overloads for the background (_: alignment 🙂 and border (_: width:) modifiers are deprecated. Use shapes in a background (_: alignment 🙂 or overlay (_: alignment 🙂 to draw these instead. (53067530)
• SwiftUI APIs deprecated in previous betas are now removed. (52587863)
• The identified (by 🙂 method on the Collection protocol is deprecated in favor of dedicated init (_: id: selection: rowContent 🙂 and init (_: id: content:) initializers. (52976883, 52029393)

The retroactive conformance of the protocol is removed. Change any code that links to this conformance to pass .self to the id parameter of the relevant initializer. Constant ranges of Int continues to be accepted:

List (0 .. <5) {
Text ( "Rooms")
}

However, you should not have a range that changes at runtime. If you use this variable, the list displays the following list of variables.

• Several 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 subscript on the set structure:
extension Set {
subscript (member: Element) -> Bool {
get {contains (member)}
set {
if newValue {
insert (member)
} else {
remove (member)
}
}
}
}
Then, change self. $ Favorites.contains (landmarkID) to self. $ FavoriteslandmarkID.

• The Binding structure's conditional conformance to the Collection protocol is removed. (51624798)

If you have the following code:
struct LandmarkList: View {
@Binding var landmark: Landmark

var body: some View {
List (landmarks) {landmark in
Toggle (landmark.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}

func index (after i: Index) -> Index {
base.index (after: i)
}

func index (before i: Index) -> Index {
base.index (before: i)
}

func index (_ i: Index, offsetBy distance: Int) -> Index {
base.index (i, offsetBy: distance)
}

subscript (position: Index) -> Element {
(index: position, element: baseposition)
}
}

RandomAccessCollection extension {
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)
}
}
}

• The relativeWidth (_ :), relativeHeight (_ :), and relativeSize (width: height 🙂 modifiers are deprecated. Use other modifiers like frame (minWidth: idealWidth: maxWidth: minHeight: idealHeight: maxHeight: alignment 🙂 instead. (51494692)

Third-Party Apps – Known Issues

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

UIKit – New Features

• The UITableViewCell class no longer changes the backgroundColor or isOpaqueproperties of the contentView and any of its subviews when cells become highlighted or selected. If you are setting an opaque backgroundColor on any subviews of the cell inside (and including) the contentView, the appearance when the cell is highlighted or selected may be affected. The simplest way to resolve any issues with your subtitles is to ensure their success. However, if needed you can override the setHighlighted (_: animated 🙂 and setSelected (_: animated 🙂 methods to manually change these properties on your subviews. (13955336)
• Since iOS 8, using UISearchController with UINavigationController has required setting the definesPresentationContext property of the top view controller to true. Failure to do so leads to subtle bugs that can be hard to detect and debug. Starting in iOS & iPadOS 13 beta, if a view controller's navigationItem has a non-nilsearchController, when the view controller is shown in a navigation controller, UINavigationController automatically sets that view controller's definesPresentationContext property to true. If you are targeting earlier versions of iOS, set this property before your search controller becomes active. (31338934)
• The UIRefreshControl class no longer directly modifies the contentInset of its scroll view. Instead, its adjustments to the content will be incorporated into the scroll view's adjustedContentInset. The only exception is when the scroll view's contentInsetAdjustmentBehavior is set to UIScrollView.ContentInsetAdjustmentBehavior.never, in which case the UIRefreshControl instance will modify the contentInset directly as it was in previous releases. (35866834)
• If you implement self-sizing cells by ITU-T VIEWFILE (without using Auto Layout), the height you want is the desired height for the contentView of the cell, and UITableViewCell for the cell separator. If you implement manual self-sizing this way, the cell is contentView size is guaranteed to be accurate for you to use when calculating when sizeThatFits (_ 🙂 is called on the UITableViewCell. (39742612)
• These are the views and view controllers, now their traitCollectionproperty populated with traits during initialization. These initial traits represent a prediction of the ultimate features that the trait environment will receive when it gets added to the hierarchy. Because the traits that are populated during initialization are just predicted, they may be different than the actual ones. Therefore, when possible you should wait to perform work that uses the traitCollection until the view, or view controller's view, has moved into the hierarchy – meaning window returns to non-nil value – so that you do not have to throw away any work where the actual traits are different. The best time to use the traitCollection is during layout, such as inside layoutSubviews (), viewWillLayoutSubviews (), or viewDidLayoutSubviews ().
• The traitCollectionDidChange (_ 🙂 method is only called when the value of a trait changes. Importantly, because the collection is now initialized in the destination hierarchy, when the initial predicted features match the ultimate features in the hierarchy, traitCollectionDidChange (_ 🙂 the hierarchy. Because traitCollectionDidChange (_ 🙂 is intended to be an invalidation callback to notify you that one or more features changed, audit your existing implementations of this method, as well as the UIContentContainer method willTransition (to: have been relying on it to trigger initial setup. The best place to perform is the work of the person who is working on the subject. (46818941)
• You can now enable debug logging to easily see when traitCollectionDidChange (_ 🙂 or willTransition (to:) is called on your own classes. Turn on the logging by using the following launch argument: -UITraitCollectionChangeLoggingEnabled YES. You may want to try to disable the Main Thread Checker while using this application and get rid of your Xcode to avoid extra log messages for unrelated classes. (47858564)
• The UITableViewCell class's contentView property is always off-the-shelf. This streamlines the layout code so developers who want the correct translation of the translation. You should always go to their layout on the layout. These inserts will be automatically adjusted to match the system's default spacing. (48214114)
• You can now invoke a custom initializer from a creation block that is passed through instantiateInitialViewController (creator 🙂 or instantiateViewController (identifier: creator :). This is the first step in the process of creating an interface with the framework of the interface builder. A custom controller initializer must call its super.init (code 🙂 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)

Watch – Known Issues

• Complications might disappear from Apple Watch after updating to iOS 13 beta if your watch is not running watchOS 6 beta. (50507942)

Xcode – New Features

• CAMetalLayer is now available in Simulator. (45101325)

Xcode – Known Issues

• Donated shortcuts might not be appearing 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 playing Safari mutes the audio. (51207286)