The document-based SwiftUI example app (https://developer.apple.com/documentation/swiftui/building-a-document-based-app-with-swiftui) doesn't specify a launch image.
It would seem per the HIG that the "pinkJungle" background in the app would be a decent candidate for a launch image, since it will be in the background when the document browser comes up.
However when specifying it as the UIImageName, it is not aligned the same as the background image. I'm having trouble figuring out how it should be aligned to match the image. The launch image seems to be scaled up a bit over scaledToFill.
I suppose a launch storyboard might make this more explicit, but I still should be able to do it without one.
This is the image when displayed as the launch image:
and this is how it's rendered in the background right before the document browser comes up:
UIKit
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Summary
In iOS 18, the UICollectionViewDelegate method
collectionView(_:targetIndexPathForMoveOfItemFromOriginalIndexPath:atCurrentIndexPath:toProposedIndexPath:)
is not being called when moving items in a UICollectionView. This method works as expected in iOS 17.5 and earlier versions.
Steps to Reproduce
Create a UICollectionView with drag and drop enabled.
Implement the UICollectionViewDelegate method:
func collectionView(_ collectionView: UICollectionView, targetIndexPathForMoveOfItemFromOriginalIndexPath originalIndexPath: IndexPath, atCurrentIndexPath currentIndexPath: IndexPath, toProposedIndexPath proposedIndexPath: IndexPath) -> IndexPath {
print("🐸 Move")
return proposedIndexPath
}
Run the app on iOS 18.
Attempt to drag and drop items within the collection view.
Expected Behavior
The method should be called during the drag and drop operation, and "🐸 Move" should be printed to the console.
Actual Behavior
The method is not called, and nothing is printed to the console. The drag and drop operation still occurs, but without invoking this delegate method.
Configuration
iOS Version: 18
Xcode Version: Xcode 16.0.0
I have a tab bar with 4 tabs. Since iOS 26, I’m facing an issue with the tab alignment — the text automatically shrinks, and the tab icon shifts upward for some tabs.
I am using UITab property for creating Tabs from os Version above 18 and UITabBar for os version below 18.
I’m developing an app that includes a navigation bar with a centered title and a single right bar button item. I’ve noticed that when both the navigation bar title and the right bar button item’s title are relatively long, the navigation bar title becomes hidden.
This issue only occurs on iOS 26. When running the same code on iOS 18, the layout behaves as expected, with both elements visible.
Has anyone else experienced this behavior on iOS 26? Is this a known layout change or a possible bug?
I’m running the interactive reordering sample from this repo and hitting an odd behavior on newer simulators: the delegate method that lets you steer the drop:
func collectionView(_:targetIndexPathForMoveOfItemFromOriginalIndexPath:atCurrentIndexPath:toProposedIndexPath:)
works fine on iOS 16, but on iOS 18 and iOS 26 simulators it never fires, so the item always lands at the proposed index path and I can’t constrain moves or adjust the compositional view layout to accommodate the cell of different size.
Is this a new behavior in modern iOS? If so, what’s the recommended way to control the final index path for the UICollectionViewDropDelegate now?
According to Apple's documentation, SKOverlay is designed to recommend other applications to users. I'm seeking clarification on whether it also supports displaying update prompts for the host application itself.
Use case:
My app (for example, HelloDeveloper) is live at version 2.0, but some users are still on version 1.0. I want to display a soft update prompt that allows users to remain in the app.
Question:
Is it possible to use SKOverlay with my app's App Store ID to present an update option without requiring users to leave the app?
Hi,
We began to get this new crash in codes that exist years ago from our recent released version, it crashed after a view removed itself from superview.
We tried to look at the assembly code of NSISSparseVectorAddTermWithPlaceValueCoefficientStartingIndex, find out that d0 <= 0 would branch to NSISSparseVectorAddTermWithPlaceValueCoefficientStartingIndex.cold.1.
We believe that it's related with Autolayout, but setting a negative value for width or height constraints can't reproduce this crash.
Here is the crash log
Exception Type: NSInternalInconsistencyException Invalid parameter not satisfying: placeValue > 0
Exception Codes: fault addr: (null)
Crashed Thread: 0
0 CoreFoundation ___exceptionPreprocess + 164
1 libobjc.A.dylib _objc_exception_throw + 88
2 Foundation -[NSMutableDictionary(NSMutableDictionary) initWithContentsOfFile:] + 0
3 CoreAutoLayout NSISSparseVectorAddTermWithPlaceValueCoefficientStartingIndex.cold.1 + 100
4 CoreAutoLayout _NSISSparseVectorAddTermWithPlaceValueCoefficientStartingIndex + 848
5 CoreAutoLayout _NSISSparseVectorAddVectorTimesScalar + 72
6 CoreAutoLayout -[NSISObjectiveLinearExpression replaceVar:withExpression:processVarNewToReceiver:processVarDroppedFromReceiver:] + 200
7 CoreAutoLayout ____substituteOutAllOccurencesOfBodyVar_block_invoke + 504
8 CoreAutoLayout __substituteOutAllOccurencesOfBodyVar + 340
9 CoreAutoLayout __pivotToMakeColNewHeadOfRow + 960
10 CoreAutoLayout -[NSISEngine removeConstraintWithMarker:] + 748
11 CoreAutoLayout -[NSLayoutConstraint _removeFromEngine:] + 140
12 UIKitCore ___57-[UIView(AdditionalLayoutSupport) _switchToLayoutEngine:]_block_invoke + 164
13 CoreAutoLayout -[NSISEngine withBehaviors:performModifications:] + 84
14 UIKitCore -[UIView(AdditionalLayoutSupport) _switchToLayoutEngine:] + 212
15 UIKitCore ___57-[UIView(AdditionalLayoutSupport) _switchToLayoutEngine:]_block_invoke_2 + 148
16 UIKitCore ___57-[UIView(AdditionalLayoutSupport) _switchToLayoutEngine:]_block_invoke + 544
17 CoreAutoLayout -[NSISEngine withBehaviors:performModifications:] + 84
18 UIKitCore -[UIView(AdditionalLayoutSupport) _switchToLayoutEngine:] + 212
19 UIKitCore ___45-[UIView(Hierarchy) _postMovedFromSuperview:]_block_invoke + 84
20 CoreAutoLayout -[NSISEngine withBehaviors:performModifications:] + 84
21 UIKitCore -[UIView _postMovedFromSuperview:] + 512
22 UIKitCore ___UIViewWasRemovedFromSuperview + 136
23 UIKitCore -[UIView(Hierarchy) removeFromSuperview] + 244
Assembly of NSISSparseVectorAddTermWithPlaceValueCoefficientStartingIndex
CoreAutoLayout`NSISSparseVectorAddTermWithPlaceValueCoefficientStartingIndex:
-> 0x1ec1a2124 <+0>: pacibsp
0x1ec1a2128 <+4>: stp d11, d10, [sp, #-0x60]!
0x1ec1a212c <+8>: stp d9, d8, [sp, #0x10]
0x1ec1a2130 <+12>: stp x24, x23, [sp, #0x20]
0x1ec1a2134 <+16>: stp x22, x21, [sp, #0x30]
0x1ec1a2138 <+20>: stp x20, x19, [sp, #0x40]
0x1ec1a213c <+24>: stp x29, x30, [sp, #0x50]
0x1ec1a2140 <+28>: add x29, sp, #0x50
0x1ec1a2144 <+32>: mov x19, x1
0x1ec1a2148 <+36>: fmov d9, d2
0x1ec1a214c <+40>: fmov d10, d1
0x1ec1a2150 <+44>: fmov d8, d0
0x1ec1a2154 <+48>: mov x20, x0
0x1ec1a2158 <+52>: fcmp d0, #0.0
0x1ec1a215c <+56>: b.le 0x1ec1a2470 ; <+844>
0x1ec1a2160 <+60>: fcmp d10, #0.0
0x1ec1a2164 <+64>: adrp x8, 112778
....
0x1ec1a2468 <+836>: ldp d11, d10, [sp], #0x60
0x1ec1a246c <+840>: retab
0x1ec1a2470 <+844>: bl 0x1ec1cac18 ; NSISSparseVectorAddTermWithPlaceValueCoefficientStartingIndex.cold.1
0x1ec1a2474 <+848>: b 0x1ec1a2160 ; <+60>
After updating to Xcode 26 my XCUITests are now failing as during execution exceptions are being raised and caught by my catch all breakpoint
These exceptions are only raised during testing, and seem to be referencing some private internal property. It happens when trying to tap a button based off an accessibilityIdentifier
e.g.
accessibilityIdentifier = "tertiary-button"
...
...
app.buttons["tertiary-button"].tap()
The full error is:
Thread 1: "[<UIKit.ButtonBarButtonVisualProvider 0x600003b4aa00> valueForUndefinedKey:]: this class is not key value coding-compliant for the key _titleButton."
Anyone found any workarounds or solutions? I need to get my tests running on the liquid glass UI
please fix!
Setting up UITabAccessory via setBottomAccessory(_:animated:) causing recursion internally on iPhone Air which is leading into a crash.
Sharing crash log & feedback below...
crashlog.crash
crash-feedback.json
Under iPadsOS 26.0 and 26.1, if a view controller is presented with a presentation style of fullScreen or pageSheet, and the view controller is setup with a UISearchController that has obscuresBackgroundDuringPresentation set to true, then when cancelling the search the view controller is being dismissed when it should not be.
To replicate, create a new iOS project based on Swift/Storyboard using Xcode 26.0 or Xcode 26.1. Update ViewController.swift with the following code:
import UIKit
class ViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
view.backgroundColor = .systemBackground
title = "Root"
navigationItem.rightBarButtonItems = [
UIBarButtonItem(title: "Full", primaryAction: .init(handler: { _ in
self.showModal(with: .fullScreen)
})),
UIBarButtonItem(title: "Page", primaryAction: .init(handler: { _ in
self.showModal(with: .pageSheet)
})),
UIBarButtonItem(title: "Form", primaryAction: .init(handler: { _ in
self.showModal(with: .formSheet)
})),
]
}
private func showModal(with style: UIModalPresentationStyle) {
let vc = ModalViewController()
let nc = UINavigationController(rootViewController: vc)
// This triggers the double dismiss bug when set to either pageSheet or fullScreen.
// If set to formSheet then it works fine.
// Bug is only on iPad with iPadOS 26.0 or 26.1 beta 2.
// Works fine on iPhone (any iOS) and iPadOS 18 as well as macOS 26.0 (not tested with other versions of macOS).
nc.modalPresentationStyle = style
self.present(nc, animated: true)
}
}
Then add a new file named ModalViewController.swift with the following code:
import UIKit
class ModalViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
title = "Modal"
view.backgroundColor = .systemBackground
setupSearch()
}
private func setupSearch() {
let sc = UISearchController(searchResultsController: UIViewController())
sc.delegate = self // Just for debugging - being set or not does not affect the bug
sc.obscuresBackgroundDuringPresentation = true // Critical to reproducing the bug
navigationItem.searchController = sc
navigationItem.preferredSearchBarPlacement = .stacked
}
// When the search is cancelled by tapping on the grayed out area below the search bar,
// this is called twice when it should only be called once. This happens only if the
// view controller is presented with a fullScreen or pageSheet presentation style.
// The end result is that the first call properly dismisses the search controller.
// The second call results in this view controller being dismissed when it should not be.
override func dismiss(animated flag: Bool, completion: (() -> Void)? = nil) {
print("dismiss ViewController")
// Set breakpoint on the following line
super.dismiss(animated: flag, completion: completion)
}
}
extension ModalViewController: UISearchControllerDelegate {
func willDismissSearchController(_ searchController: UISearchController) {
print("willDissmissSearchController")
}
func didDismissSearchController(_ searchController: UISearchController) {
print("didDismissSearchController")
}
}
Build and run the app on a simulated or real iPad running iPadOS 26.0 or 26.1 (beta 2). A root window appears with 3 buttons in the navbar. Each button displays the same view controller but with a different modalPresentationStyle.
Tap the Form button. This displays a modal view controller with formSheet style. Tap on the search field. Then tap on the grayed out area of the view controller to cancel the search. This all works just fine. Dismiss the modal (drag it down).
Now tap either the Page or Full button. These display the same modal view controller with pageSheet or fullScreen style respectively. Tap on the search field. Then tap on the grayed out area of the view controller to cancel the search. This time, not only is the search cancelled, but the view controller is also dismissed. This is because the view controller’s dismiss(animated:completion:) method is being called twice.
See ViewController.swift for the code that presents the modal. See ModalViewController.swift for the code that sets up the search controller. Both contain lots of comments.
Besides the use of fullScreen or pageSheet presentation style to reproduce the bug, the search controller must also have its obscuresBackgroundDuringPresentation property set to true. It’s the tap on that obscured background to cancel the search that results in the double call to dismiss. With the breakpoint set in the overloaded dismiss(animated:completion:) function, you can see the two stack traces that lead to the call to dismiss. When presented as a formSheet, the 2nd call to dismiss is not being made.
This issue does not affect iPadOS 18 nor any version of iOS on iPhones. Nor does it affect the app using Mac Catalyst on macOS 26.0 (untested with macOS 15 or 26.1).
In short, it is expected that cancelling the search in a presented view controller should not also result in the view controller being dismissed.
Tested with Xcode 26.1 beta 2 and Xcode 26.0. Tested with iPadOS 26.1 beta 2 (real and simulated) and iPadOS 26.0 (simulated).
A version of this post was submitted as FB20569327
I want to set a sublayer to a UIButton's layer, using a Glass or Prominent Glass configuration, setting the strokeColor property acting as the border to a UIButton's bounds.
The main issue I'm facing is not being able to follow the button's bounds when it changes as it expands on touch down.
Is there an expected pattern for applying sublayers to a UIButton and make it follow UIButton's bounds as it changes during interactions?
The keyboard looks dimmed/disabled on every keyboard and every keyboard type inside my app, but is still fully functional. The dimmed/disabled effect includes keyboards shown inside the WebView.
The bug only appears in iOS26 and iOS26.0.1, but not on any previous versions of iOS.
I’m really frustrated with iOS 26. It was supposed to make better use of screen space, but when you combine the navigation bar, tab bar, and search bar, they eat up way too much room.
Apple actually did a great job with the new tab bar — it’s smaller, smooth, and looks great when expanding or collapsing while scrolling. The way the search bar appears above the keyboard is also really nice.
But why did they keep the navigation bar the same height in both portrait and landscape? In landscape it takes up too much space and just looks bad. It was way better in iOS 18.
We have a UICollectionView whose cells have custom context menu highlight previews.
In the delegate method collectionView(_:contextMenuConfiguration:highlightPreviewForItemAt:), we build a UITargetedPreview whose custom view contains some action buttons.
Up until iOS 18, our setup has been working perfectly. But since iOS 26, the custom view is not responding to touches. When the user taps one of its buttons, the context menu gets dismissed as if the touch was outside of the custom view.
Is there any UICollectionView-related API change in version 26?
I am trying to understand if what I am seeing is expected behavior or not with the following UIKit components.
1.I have a view controller "A" embedded in a navigation controller (part of a multi-step flow). Large titles are active on this navigation controller.
In this view controller "A", I have a container view that contains another view controller "B" (I want to reuse the contents of B in other flows)
Inside view controller "B" I have a UICollectionView using a diffable data source.
When you load view controller "A" it appears to work fine. My collection view loads data, I see a nice list and when I scroll it...
... the expectation is it scrolls inside it's container and has no impact on the parent controller "B"
However, the navigation bar and title in "A" reflect the content offset of the collection view. Scroll a couple lines, the large title turns small and centered on top. If I turn off large title, I still see the background color of the navigation bar change as it would if you were scrolling a view directly inside controller "A" without the container view.
Am I supposed to be manually capturing the gesture recognizer in B and somehow preventing the gesture to bubble up to A? It seems like strange behavior to have to correct. Any suggestions?
Thanks!
I a using the current RC version of iOS on both my iPhone and iPad. I and developing an iCloud based app and it works correctly on iOS 18. When I upgraded to iOS 26 the iCloud functions work correctly but the push notifications do not work.
The issue appears to be creating subscriptions. The following code should create a subscription and does not get an error, but it did to create a subscription under iOS 26.
func subscribeToNotifications(recordType: String,
subscriptionID: String, notification: CKSubscription.NotificationInfo) {
let subscriptionIDForType = "\(subscriptionID)-\(recordType)"
let predicate = NSPredicate(value: true)
let subscription = CKQuerySubscription(recordType: recordType, predicate: predicate, subscriptionID: subscriptionIDForType, options: [.firesOnRecordCreation, .firesOnRecordUpdate, .firesOnRecordDeletion])
let notification = CKSubscription.NotificationInfo()
subscription.notificationInfo = notification
CKContainer.default().publicCloudDatabase.save(subscription) { (returnedSubscription, error) in
if let error = error {
print("Error saving subscription: \(error)")
} else {
print("Successfully saved subscription: recordType: " + recordType + " subscriptionID: " + subscriptionIDForType)
}
}
}
Print results:
Successfully saved subscription: recordType: folder subscriptionID: folderName-folder
Topic:
App & System Services
SubTopic:
Notifications
Tags:
CloudKit
User Notifications
iPad and iOS apps on visionOS
UIKit
Hi! I am learning Swift and UIKit for work. I am trying to automate using a pickerWheel in VisionOS, but since .adjust(toValue: ) was removed in VisionOS's API, I am absolutely struggling to find a way to set a pickerWheel to a specific value.
Currently, my solution is to calculate the amount of times I would need to increment/decrement the wheel to get from the current value to the desired value, then do so one at a time. However, this currently does not work, as .accessibilityIncrement() and .accessibilityDecrement() do not work, and .swipeUp() and .swipeDown() go too far. What can I do?
Note: I am not a frontend engineer, so while solutions may exist that involve changes to the frontend, I would much rather try and get the frontend we do have to work as is.
Hi everyone,
I'm encountering an unexpected behavior with modal presentations in UIKit. Here’s what happens:
I have UIViewControllerA (let’s call it the "orange" VC) pushed onto a UINavigationController stack.
I present UIViewControllerB (the "red" VC, inside its own UINavigationController as a .formSheet) modally over UIViewControllerA.
After a short delay, I pop UIViewControllerA from the navigation stack.
Issue:
After popping UIViewControllerA, the modal UIViewControllerB remains visible on the screen and in memory. I expected that dismissing (popping) the presenting view controller would also dismiss the modal, but it stays.
Expected Behavior:
When UIViewControllerA (orange) is popped, I expect the modal UIViewControllerB (red) to be dismissed as well.
Actual Behavior:
The modal UIViewControllerB remains on screen and is not dismissed, even though its presenting view controller has been removed from the navigation stack.
Video example: https://youtube.com/shorts/sttbd6p_r_c
Question:
Is this the expected behavior? If so, what is the recommended way to ensure that the modal is dismissed when its presenting view controller is removed from the navigation stack?
Code snippet:
class MainVC: UIViewController {
private weak var orangeVC: UIViewController?
override func viewDidLoad() {
super.viewDidLoad()
self.view.backgroundColor = .blue
let dq = DispatchQueue.main
dq.asyncAfter(deadline: .now() + 1) { [weak self] in
let vc1 = UIViewController()
vc1.view.backgroundColor = .orange
vc1.modalPresentationStyle = .overCurrentContext
self?.navigationController?.pushViewController(vc1, animated: true)
self?.orangeVC = vc1
dq.asyncAfter(deadline: .now() + 1) { [weak self] in
let vc2 = UIViewController()
vc2.view.backgroundColor = .red
vc2.modalPresentationStyle = .formSheet
vc2.isModalInPresentation = true
let nav = UINavigationController(rootViewController: vc2)
if let sheet = nav.sheetPresentationController {
sheet.detents = [.medium()]
}
self?.orangeVC?.present(nav, animated: true)
dq.asyncAfter(deadline: .now() + 1) { [weak self] in
self?.navigationController?.popViewController(animated: true)
}
}
}
}
}
Thank you for your help!
Good day!
Have anyone experienced sudden crashes increase cause by CALayerInvalidGeometry · CALayer position contains NaN: [nan 5] that gets set via -[AVMobileGlassVolumeControlsView layoutSubviews]?
94% of crashes belong to iOS 26.0.1, while rest to 26.0. What's weird, though, is that it is caused by some AVKit internal logic and cant' understand how to track it down, neither how to reproduce.
Stack trace looks as follows:
0 CoreFoundation +0xc98c4 ___exceptionPreprocess
1 libobjc.A.dylib +0x317c0 _objc_exception_throw
2 CoreFoundation +0x1548d0 +[NSException raise:format:]
3 QuartzCore +0x909b4 CA::Layer::set_position(CA::Vec2<double> const&, bool)
4 QuartzCore +0x2af294 -[CALayer setPosition:]
5 UIKitCore +0xe9fc18 -[UIView _backing_setPosition:]
6 UIKitCore +0x18f6158 -[UIView setCenter:]
7 UIKitCore +0x1eb704 0x188b5e704 (0x188b5e5f4 + 272)
8 UIKitCore +0x1eb56c 0x188b5e56c (0x188b5e4f0 + 124)
9 UIKitCore +0x18fd318 -[UIView(Geometry) _resizeWithOldSuperviewSize:]
10 CoreFoundation +0x1514c ___NSARRAY_IS_CALLING_OUT_TO_A_BLOCK__
11 CoreFoundation +0xdd18c -[__NSArrayM enumerateObjectsWithOptions:usingBlock:]
12 UIKitCore +0x18fc6dc -[UIView(Geometry) resizeSubviewsWithOldSize:]
13 UIKitCore +0x18fabd0 -[UIView(Geometry) setFrame:]
14 AVKit +0x1b5a88 -[AVMobileGlassVolumeControlsView layoutSubviews]
15 UIKitCore +0x27074 0x18899a074 (0x188999d3c + 824)
16 UIKitCore +0x27b34 0x18899ab34 (0x18899ab14 + 32)
17 UIKitCore +0x190df64 -[UIView(CALayerDelegate) layoutSublayersOfLayer:]
18 QuartzCore +0xac9a4 CA::Layer::perform_update_(CA::Layer*, CALayer*, unsigned int, CA::Transaction*)
19 QuartzCore +0x8f2f8 CA::Layer::update_if_needed(CA::Transaction*, unsigned int, unsigned int)
20 UIKitCore +0x57b0 -[UIView(Hierarchy) layoutBelowIfNeeded]
21 AVKit +0x1b6634 ___74-[AVMobileGlassVolumeControlsView _updateVolumeFluidSliderEmphasizedScale]_block_invoke
22 UIKitCore +0x1b3e58 -[UIViewPropertyAnimator _runAnimations]
23 UIKitCore +0x19025f0 +[UIView(Animation) _performWithState:trackingIdentifier:duration:delay:animations:]
24 UIKitCore +0x83a650 ___49-[UIViewPropertyAnimator startAnimationAsPaused:]_block_invoke_4
25 UIKitCore +0x83a460 ___49-[UIViewPropertyAnimator startAnimationAsPaused:]_block_invoke
26 UIKitCore +0x83a210 -[UIViewPropertyAnimator startAnimationAsPaused:]
27 AVKit +0x1b6574 -[AVMobileGlassVolumeControlsView setEmphasized:]
28 AVKit +0x127510 ___64-[AVMobileGlassControlsViewController _animateVolumeEmphasisTo:]_block_invoke
29 UIKitCore +0x1b3e58 -[UIViewPropertyAnimator _runAnimations]
30 UIKitCore +0x83a590 ___49-[UIViewPropertyAnimator startAnimationAsPaused:]_block_invoke_3
31 UIKitCore +0x83a460 ___49-[UIViewPropertyAnimator startAnimationAsPaused:]_block_invoke
32 UIKitCore +0x83a514 ___49-[UIViewPropertyAnimator startAnimationAsPaused:]_block_invoke_2
33 UIKitCore +0x839e60 -[UIViewPropertyAnimator _setupAnimationTracking:]
34 UIKitCore +0x83a260 -[UIViewPropertyAnimator startAnimationAsPaused:]
35 AVKit +0x127480 -[AVMobileGlassControlsViewController _animateVolumeEmphasisTo:]
36 AVKit +0x12ea2c ___56-[AVMobileGlassControlsViewController _observationSetup]_block_invoke_5
37 AVKit +0xcbcd0 ___106-[AVObservationController startObservingNotificationForName:object:notificationCenter:observationHandler:]_block_invoke
38 CoreFoundation +0x519ec ___CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__
39 CoreFoundation +0x51ab0 ____CFXRegistrationPost_block_invoke
40 CoreFoundation +0x5190c __CFXRegistrationPost
41 CoreFoundation +0x520ac __CFXNotificationPost
42 Foundation +0x94fc2c -[NSNotificationCenter postNotificationName:object:userInfo:]
43 AVKit +0x1b9bd8 -[AVSystemVolumeController _postNotificationForNameIfFullyInitialized:userInfo:]
44 AVKit +0x1b9dc0 -[AVSystemVolumeController setVolume:shouldShowHUD:]
45 AVKit +0x1b965c ___69-[AVSystemVolumeController _handleSystemVolumeDidChangeNotification:]_block_invoke
46 AVKit +0x1b8da4 -[AVSystemVolumeController _performOnMainThread:]
47 AVKit +0x1b95c0 -[AVSystemVolumeController _handleSystemVolumeDidChangeNotification:]
48 CoreFoundation +0x51a00 ___CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__
49 CoreFoundation +0x51ab0 ____CFXRegistrationPost_block_invoke
50 CoreFoundation +0x5190c __CFXRegistrationPost
51 CoreFoundation +0x520ac __CFXNotificationPost
52 Foundation +0x94fc2c -[NSNotificationCenter postNotificationName:object:userInfo:]
53 MediaExperience +0x1039b0 ___76+[AVSystemControllerCommon postNotificationOnMainQueue:notification:object:]_block_invoke
54 MediaExperience +0x6b64 ___MXDispatchAsync_block_invoke
55 libdispatch.dylib +0x1ad8 __dispatch_call_block_and_release
56 libdispatch.dylib +0x1b7e8 __dispatch_client_callout
57 libdispatch.dylib +0x38b20 __dispatch_main_queue_drain.cold.5
58 libdispatch.dylib +0x10ec4 __dispatch_main_queue_drain
59 libdispatch.dylib +0x10e00 __dispatch_main_queue_callback_4CF
60 CoreFoundation +0x6b51c ___CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__
61 CoreFoundation +0x1dd10 ___CFRunLoopRun
62 CoreFoundation +0x1cc40 __CFRunLoopRunSpecificWithOptions
63 GraphicsServices +0x1494 _GSEventRunModal
64 UIKitCore +0xa9dd8 -[UIApplication _run]
65 UIKitCore +0x4eb08 _UIApplicationMain
66 TuneIn Radio +0x1b318 main (main.m:28:22)
67 dyld +0x4e24 start