I am using a Share Extension that shares a simple text, thus NSExtensionActivationSupportsText is in my Info.plist. How would I configure UIActivityViewController to enable my app to share test with other uses of my app? Which classses would I need to use? I actually need to pass a URL, more specifically a URL generated by CloudKit framework to use CKShare and UICloudSharingController, but for now I need to learn how to simply share test information.

What App Extensions and Entitlements or any other settings or anything else do I need to do in order to allow my app to use CloudKit sharing to share CKShare.url with other users of my app so that one user can share with another user by sending the URL to my app in addition to other apps such as Messages and Mail?

I'm trying out Apple's Document Browser I am trying to find what UTTypeIdentifier com.apple.coreaudio-​format conforms to for the UTTypeConformsTo item in Info.plist of said project. I was able to find com.apple.coreaudio-​format, but I am having trouble finding the UTTypeConformsTo value for that. Anyone can guide me or give me a hint?

Anyone know how to use the Share Extension for iOS that either shows an alert or shows nothing at all when another app shares with your app? Am I allowed to use a UIAlertController?

Why did I get an error in playground in debug window for this code? print("// MARK: - Start execable code here...") do { let store = CNContactStore() if try await store.requestAccess(for: .contacts) { // Do something with Contacts. let phoneNumber = CNPhoneNumber(stringValue: "903-276-1046") let predicateForContactsMatchingPhoneNumber = CNContact.predicateForContacts(matching: phoneNumber) let contactFetchRequest = CNContactFetchRequest(keysToFetch: thoroughKeysToCompare) contactFetchRequest.predicate = predicateForContactsMatchingPhoneNumber contactFetchRequest.unifyResults = true var contactOfMe: CNContact! = nil try! store.enumerateContacts(with: contactFetchRequest) { contact, stop in contactOfMe = contact stop.pointee = true } let contact = Contact(cnContact: contactOfMe) for property in contact.enumerated() { print("- \(property)") } } else { // Handle if Contacts access is denied. fatalError() } } catch { // Handle any error. print("error requesting access: \(error.localizedDescription)") } Debug window: // MARK: - Start execable code here... Playground execution failed: error: Execution was interrupted, reason: shared-library-event. The process has been left at the point where it was interrupted, use "thread return -x" to return to the state before expression evaluation. * thread #1, queue = 'com.apple.main-thread' frame #0: 0x00007ff80002f931 libobjc.A.dylib`_mapStrHash(_NXMapTable*, void const*) + 73 frame #1: 0x00007ff80002fc7f libobjc.A.dylib`_NXMapMember(_NXMapTable*, void const*, void**) + 35 frame #2: 0x00007ff80003b7ae libobjc.A.dylib`getProtocol(char const*) + 41 frame #3: 0x00007ff8000428e6 libobjc.A.dylib`class_conformsToProtocol + 337 frame #4: 0x00007ff80004ab4e libobjc.A.dylib`-[NSObject conformsToProtocol:] + 47 frame #5: 0x0000000109c27951 UIKitCore`_UIFocusItemContainerIsScrollableContainer + 74 frame #6: 0x0000000109c28e38 UIKitCore`-[_UIFocusEnvironmentContainerTuple initWithOwningEnvironment:itemContainer:] + 194 frame #7: 0x0000000109c28fed UIKitCore`+[_UIFocusEnvironmentContainerTuple tupleWithOwningEnvironment:itemContainer:] + 70 frame #8: 0x0000000109c4f41e UIKitCore`_UIFocusRegionContainerFromEnvironmentAndContainer + 44 frame #9: 0x0000000109c27ed3 UIKitCore`_UIFocusItemContainerAddChildItemsInContextWithArguments + 1162 frame #10: 0x000000010a99c439 UIKitCore`-[UIView _searchForFocusRegionsInContext:] + 962 frame #11: 0x0000000109c6b37f UIKitCore`-[_UIFocusMapSnapshot addRegionsInContainer:] + 4583 frame #12: 0x0000000109c69740 UIKitCore`-[_UIFocusMapSnapshot _capture] + 456 frame #13: 0x0000000109c67fc5 UIKitCore`-[_UIFocusMapSnapshot _initWithSnapshotter:mapArea:searchArea:] + 628 frame #14: 0x0000000109c6cce2 UIKitCore`-[_UIFocusMapSnapshotter captureSnapshot] + 227 frame #15: 0x0000000109c5f450 UIKitCore`-[_UIFocusMap _inferredDefaultFocusItemInEnvironment:] + 147 frame #16: 0x0000000109c2b1cf UIKitCore`-[_UIFocusEnvironmentPreferenceEnumerationContext _inferPreferencesForEnvironment:] + 157 frame #17: 0x0000000109c2abbc UIKitCore`-[_UIFocusEnvironmentPreferenceEnumerationContext _resolvePreferredFocusEnvironments] + 118 frame #18: 0x0000000109c2ab12 UIKitCore`-[_UIFocusEnvironmentPreferenceEnumerationContext prefersNothingFocused] + 31 frame #19: 0x0000000109c2beeb UIKitCore`_enumeratePreferredFocusEnvironments + 198 frame #20: 0x0000000109c2c061 UIKitCore`_enumeratePreferredFocusEnvironments + 572 frame #21: 0x0000000109c2c061 UIKitCore`_enumeratePreferredFocusEnvironments + 572 frame #22: 0x0000000109c2c061 UIKitCore`_enumeratePreferredFocusEnvironments + 572 frame #23: 0x0000000109c2bd11 UIKitCore`-[_UIFocusEnvironmentPreferenceEnumerator enumeratePreferencesForEnvironment:usingBlock:] + 230 frame #24: 0x0000000109c2c747 UIKitCore`-[_UIDeepestPreferredEnvironmentSearch deepestPreferredFocusableItemForEnvironment:withRequest:] + 817 frame #25: 0x0000000109c95837 UIKitCore`-[UIFocusUpdateContext _updateDestinationItemIfNeeded] + 265 frame #26: 0x0000000109c95627 UIKitCore`-[UIFocusUpdateContext _destinationItemInfo] + 22 frame #27: 0x0000000109c95535 UIKitCore`-[UIFocusUpdateContext nextFocusedItem] + 24 frame #28: 0x0000000109c71ea6 UIKitCore`-[UIFocusSystem updateFocusIfNeeded] + 1347 frame #29: 0x0000000109c7608c UIKitCore`__43-[UIFocusSystem _updateFocusUpdateThrottle]_block_invoke + 34 frame #30: 0x000000010a94b971 UIKitCore`-[_UIAfterCACommitBlock run] + 57 frame #31: 0x000000010a94be71 UIKitCore`-[_UIAfterCACommitQueue flush] + 191 frame #32: 0x000000010a3926eb UIKitCore`_runAfterCACommitDeferredBlocks + 782 frame #33: 0x000000010a380fa2 UIKitCore`_cleanUpAfterCAFlushAndRunDeferredBlocks + 96 frame #34: 0x000000010a3b6be1 UIKitCore`_afterCACommitHandler + 58 frame #35: 0x00007ff8003b1c12 CoreFoundation`__CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 23 frame #36: 0x00007ff8003ac57f CoreFoundation`__CFRunLoopDoObservers + 515 frame #37: 0x00007ff8003acaa2 CoreFoundation`__CFRunLoopRun + 1121 frame #38: 0x00007ff8003ac264 CoreFoundation`CFRunLoopRunSpecific + 560 frame #39: 0x00007ff8003ad234 CoreFoundation`CFRunLoopRun + 40 frame #40: 0x00007ff83755a4e3 libswift_Concurrency.dylib`swift_task_asyncMainDrainQueueImpl() + 35 frame #41: 0x00007ff83755a4b4 libswift_Concurrency.dylib`swift_task_asyncMainDrainQueue + 52 frame #42: 0x00000001015d409f $__lldb_expr32`main at <unknown>:0 frame #43: 0x0000000100e25560 EnumeratedContactsCNContact`linkResources + 256 frame #44: 0x00007ff8003b2986 CoreFoundation`__CFRUNLOOP_IS_CALLING_OUT_TO_A_BLOCK__ + 12 frame #45: 0x00007ff8003b2148 CoreFoundation`__CFRunLoopDoBlocks + 399 frame #46: 0x00007ff8003ace09 CoreFoundation`__CFRunLoopRun + 1992 frame #47: 0x00007ff8003ac264 CoreFoundation`CFRunLoopRunSpecific + 560 frame #48: 0x00007ff809b4024e GraphicsServices`GSEventRunModal + 139 frame #49: 0x000000010a3827bf UIKitCore`-[UIApplication _run] + 994 frame #50: 0x000000010a3875de UIKitCore`UIApplicationMain + 123 * frame #51: 0x0000000100e256c5 EnumeratedContactsCNContact`main + 357 frame #52: 0x0000000100fbb384 dyld_sim`start_sim + 10 frame #53: 0x000000010943341f dyld`start + 1903```

How do I use Core Bluetooth in the simplest possible way to send a value of 0 to 1 from an iOS device to a bluetooth peripheral that does nothing but interpret the value sent to it as how strongly a vibrating component on the bluetooth peripheral should vibrate. A value of zero would mean the peripheral device doesn't vibrate at all, of course. The bluetooth peripheral would be the bluetooth ***** of course, and the iOS device would be the bluetooth master. The ***** device doesn't need to send anything at all to the master iOS device, except to link to the master. I don't know if that would allow the ***** bluetooth device to be any less expensive or smaller or simpler.

Is there a way to show what properties are in a vCard shared with a user in context of the current CNContact the same way in ContactViewController that iOS finds through Siri?

The documentation for hightlightProperty(withKey:identifier:) describes the parameter "key" as the "Key of the property to highlight." I believe that refers to the CNKeyDescriptor, such as CNContactGivenNameKey, which can cast from a type CNKeyDescriptor to String. The documentation for identifier is "the value to highlight". I believe an example of that would be "John" as the given name. Am I correct about all this? In any case, I'm not able to highlight an email property when I use CNContactEmailAddresses as the key, and an actual email address as the identifier. I have also tried using the identifier property of CNLabeledValue, which is how an email address is stored. I can't find anything on the internet to explain this. I didn't even find a similar question, except my own question asking this exact same question about two months ago. Anyone have any idea or a good answer for this?

Please say there is a way to programmatically delete playlists in Apple Music in iOS? I'll take any possible way or any hints whatsoever.

Is there a way to get the list of contacts in a message or message chain in Messages app on iOS. At one time when I looked for a way to do this there was no available way without jailbreaking. Has anything changed? Is there a way to do this now?

I want my app to allow the user to search for certain words in a video file and the transcript of that video. I found a Transcript class. I don't remember which Framework it is in. Would someone point me in the right direction? What Framework and Classes should I use.

Is there a way for my app to know that a phone number has just been messaged to or a call to 911 just started? Or SOS has just been executed by the user?

Sometimes it takes a long time for iCloud to begin syncing. Is there code I can use to cause iCloud to begin syncing when I want it to?

I am using more than one table view cell class on a table view. I have registered the reuse identifiers and the xibs. For some reason the cells are not showing. What should I check. I'm stumped.Here is my code:import UIKit class DetailTableViewController: UITableViewController { let items = [0, 1] override func viewDidLoad() { super.viewDidLoad() tableView.register(DueDateSwitchTableViewCell.self, forCellReuseIdentifier: "DueDateSwitchTableViewCell") let xibDueDateSwitchTableViewCell = UINib(nibName: "DueDateSwitchTableViewCell", bundle: Bundle.main) tableView.register(xibDueDateSwitchTableViewCell, forCellReuseIdentifier: "DueDateSwitchTableViewCell") tableView.register(DueDatePickerTableViewCell.self, forCellReuseIdentifier: "DueDatePickerTableViewCell") let xibDueDatePickerTableViewCell = UINib(nibName: "DueDatePickerTableViewCell", bundle: Bundle.main) tableView.register(xibDueDatePickerTableViewCell, forCellReuseIdentifier: "DueDatePickerTableViewCell") } override func numberOfSections(in tableView: UITableView) -&gt; Int { return 1 } override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -&gt; Int { return items.count } override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -&gt; UITableViewCell { print("tableView(_:cellForRowAt:)", "indexPath.row=", indexPath.row) let cell = UITableViewCell() switch indexPath.row { case 0: print("\tcase 0") let cell = tableView.dequeueReusableCell(withIdentifier: "DueDateSwitchTableViewCell", for: indexPath) as! DueDateSwitchTableViewCell cell.backgroundColor = UIColor.yellow case 1: print("\tcase 1") let cell = tableView.dequeueReusableCell(withIdentifier: "DueDatePickerTableViewCell", for: indexPath) as! DueDatePickerTableViewCell cell.datePicker.date = Date() default: break } return cell } }The cells show the numbers when I use this code in tableView(_:cellForRowAt:) before the line that says "return cell": cell.textLabel!.text = String(items[indexPath.section].hashValue)

How do I copy to file system or play with AVAudioPlayer an MPMediaItem that I get from an MPMediaPickerController initialized with type audio? When I try, I get an error that says:The file “item.mp3” couldn’t be opened because URL type ipod-library isn’t supported.