I try to exclude some activities from UIActivity.
It works as expected when exclusion is done directly with the activity, as with:
UIActivity.ActivityType.message,
UIActivity.ActivityType.airDrop
but not when activity is declared with an init as with:
UIActivity.ActivityType(rawValue: "net.whatsapp.WhatsApp.ShareExtension"),
UIActivity.ActivityType(rawValue: "com.ifttt.ifttt.share"),
So, with the following code:
let excludedActivityTypes = [
UIActivity.ActivityType.message,
UIActivity.ActivityType.airDrop,
UIActivity.ActivityType(rawValue: "net.whatsapp.WhatsApp.ShareExtension"),
UIActivity.ActivityType(rawValue: "com.ifttt.ifttt.share")
]
let activityVC = UIActivityViewController(activityItems: [modifiedPdfURL], applicationActivities: nil)
activityVC.excludedActivityTypes = excludedActivityTypes
message and airDrop do not show, but WhatsApp and IFTTT still show.
I have tested with
activityVC.completionWithItemsHandler = { (activity, success, modifiedItems, error) in
print("activity: \(activity), success: \(success), items: \(modifiedItems), error: \(error)")
}
that WhatsApp and IFTTT services are effectively the ones listed here.
When selecting WhatsApp, print above gives:
activity: Optional(__C.UIActivityType(_rawValue: net.whatsapp.WhatsApp.ShareExtension)), success: false, items: nil, error: nil
Post not yet marked as solved
I read in Xcode 14 release notes:
Fixed: WatchKit storyboards are deprecated in watchOS 7.0 and later. Please migrate to SwiftUI and the SwiftUI Lifecycle. (94058186)
And effectively, when adding a WatchOS target to an iOS app as a companion, it is now created as SwiftUI. In Xcode 13 we could still create as WatchKit (storyboard).
That raises a few questions:
what will happen to existing apps with companions ? Shall we have soon to redesign Watch part completely from storyboards to SwiftUI ?
What is the reason for such a deprecation ? That leads to have code with a part in storyboard the other in SwiftUI. Not ideal situation.
Is WatchKit deprecated completely ?
Personal opinion: with some present limitations of SwiftUI (such as in Lists), it will make it pretty hard to get the same flexibility in the designs that we had with WatchKit. I find it a regression not to leave both options possible.
Post not yet marked as solved
Hi Quinn, if I may add a point 10 to your (very meaningful) list:
when pasting images, think of reducing the size (can edit simply the image ref by dividing a dimension by 2) to avoid huge images that clutter the screen.
When you get an answer, please indicate if that solved the issue, if not explain what is not working. And don't forget to close the thread by marking the correct answer once you got it.
That's a follow up of a previous thread.
https://developer.apple.com/forums/thread/707130
I did some test on iOS 16 simulator with Xcode 14ß.
Recognition is very poor. And recognition rate of some single letters (an L or an I for instance) is zero (literally). Same code worked better (success 50% for same single letters) with iOS 15.2.
Did something change on iOS 16 ? I filed a bug report: Jun 7, 2022 at 3:28 PM – FB10066541
Here is the setup.
I have an UIImageView in which I write some text, using UIGraphicsBeginImageContext.
I pass this image to the OCR func:
func ocrText(onImage: UIImage?) {
let request = VNRecognizeTextRequest { request, error in
guard let observations = request.results as? [VNRecognizedTextObservation] else {
fatalError("Received invalid observations")
}
print("observations", observations.count)
for observation in observations {
if observation.topCandidates(1).isEmpty {
continue
}
}
} // end of request handler
request.recognitionLanguages = ["fr"]
let requests = [request]
DispatchQueue.global(qos: .userInitiated).async {
let ocrGroup = DispatchGroup()
guard let img = onImage?.cgImage else { return } // Conversion to cgImage works OK
print("img", img, img.width)
let (_, _) = onImage!.logImageSizeInKB(scale: 1)
ocrGroup.enter()
let handler = VNImageRequestHandler(cgImage: img, options: [:])
try? handler.perform(requests)
ocrGroup.leave()
ocrGroup.wait()
}
}
Problem is that observations is an empty array. I get the following logs:
img <CGImage 0x7fa53b350b60> (DP)
<<CGColorSpace 0x6000032f1e00> (kCGColorSpaceICCBased; kCGColorSpaceModelRGB; sRGB IEC61966-2.1)>
width = 398, height = 164, bpc = 8, bpp = 32, row bytes = 1600
kCGImageAlphaPremultipliedFirst | kCGImageByteOrder32Little | kCGImagePixelFormatPacked
is mask? No, has masking color? No, has soft mask? No, has matte? No, should interpolate? Yes 398
ImageSize(KB): 5 ko
2022-06-02 17:21:03.734258+0200 App[6949:2718734] Metal API Validation Enabled
observations 0
Which shows image is loaded and converted correctly to cgImage.
But no observations.
Now, if I use the same func on a snapshot image of the text drawn on screen, it works correctly.
Is there a difference between the image created by camera and image drawn in CGContext ?
Here is how mainImageView!.image (used in ocr) is created in a subclass of UIImageView:
override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
// Merge tempImageView into mainImageView
UIGraphicsBeginImageContext(mainImageView!.frame.size)
mainImageView!.image?.draw(in: CGRect(x: 0, y: 0, width: frame.size.width, height: frame.size.height), blendMode: .normal, alpha: 1.0)
tempImageView!.image?.draw(in: CGRect(x: 0, y: 0, width: frame.size.width, height: frame.size.height), blendMode: .normal, alpha: opacity)
mainImageView!.image = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()
tempImageView?.image = nil
}
I also draw the created image in a test UIImageView and get the correct image.
Here are the logs for the drawn texte and from the capture:
Drawing doesn't work
img <CGImage 0x7fb96b81a030> (DP)
<<CGColorSpace 0x600003322160> (kCGColorSpaceICCBased; kCGColorSpaceModelRGB; sRGB IEC61966-2.1)>
width = 398, height = 164, bpc = 8, bpp = 32, row bytes = 1600
kCGImageAlphaPremultipliedFirst | kCGImageByteOrder32Little | kCGImagePixelFormatPacked
is mask? No, has masking color? No, has soft mask? No, has matte? No, should interpolate? Yes 398
ImageSize(KB): 5 ko
2022-06-02 15:38:51.115476+0200 Numerare[5313:2653328] Metal API Validation Enabled
observations 0
Screen shot : Works
img <CGImage 0x7f97641720f0> (IP)
<<CGColorSpace 0x60000394c960> (kCGColorSpaceICCBased; kCGColorSpaceModelRGB; iMac)>
width = 570, height = 276, bpc = 8, bpp = 32, row bytes = 2280
kCGImageAlphaNoneSkipLast | 0 (default byte order) | kCGImagePixelFormatPacked
is mask? No, has masking color? No, has soft mask? No, has matte? No, should interpolate? Yes 570
ImageSize(KB): 5 ko
2022-06-02 15:43:32.158701+0200 Numerare[5402:2657059] Metal API Validation Enabled
2022-06-02 15:43:33.122941+0200 Numerare[5402:2657057] [WARNING] Resource not found for 'fr_FR'. Character language model will be disabled during language correction.
observations 1
Is there an issue with kCGColorSpaceModelRGB ?
That's an old question (this thread https://developer.apple.com/forums/thread/16375 dates back iOS9 or this other thread https://stackoverflow.com/questions/67249956/uisearchbar-warning-uitexteffectswindow-should-not-become-key-please-file-a-bu), but I've not found a comprehensive answer yet.
I need to add a Return key to a numeric keyboard (BTW, how is it it does not exist in standard ?)
I used to do it using
let keyBoardWindow = UIApplication.shared.windows.last
to get the keyboard window and then adding the subview (self.returnButton) to it
keyBoardWindow?.addSubview(self.returnButton)
Worked great and still works OK with iOS 15.
But we are told to use connectedScenes instead…
So I adapt code:
var keyBoardWindow: UIWindow? = nil
if #available(iOS 13.0, *) { // use connectedScenes
let scenes = UIApplication.shared.connectedScenes
let windowScene = scenes.first as? UIWindowScene
if let kbWindow = windowScene?.windows.last {
keyBoardWindow = kbWindow
}
} else {
keyBoardWindow = UIApplication.shared.windows.last
}
It runs, but subview does not show.
The problem is that keyboardWindow used to be a UIRemoteKeyboardWindow (the true keyboard window) and now is UITextEffectsWindow, which is not the real keyboardWindow. So adding subview to it adds improperly in the hierarchy.
Note: someone detailed the view hierarchy here: https://developer.apple.com/forums/thread/664547
UIWindow
UITextEffectsWindow
UIInputWindowController
UIInputSetContainerView
UIInputSetHostView
UIEditingOverlayViewController
UIEditingOverlayGestureView
I guess I have to add subview to something else than UITextEffectsWindow (keyBoardWindow), but to what ?
I tried
keyBoardWindow = kbWindow.superview as? UIWindow
to no avail.
I also tried to debug view hierarchy, but keyboard does not show in debugView.
Do you use third party framweworks, like Alamofire ?
I have a tableView inside a UIView in a VC.
This VC is in a navigation view. It is a UIViewController, not a UITableViewController.
The VC set up is this one:
The issue:
When I run app, there is a bar (full width, about 25 pixels high) appearing over the tableView at the bottom, hiding partially a cell (we see the (i) button nearly completely hidden). When scrolling tableView, this bar does not move and hides other cell.
I looked at the view in debugger (I edited the content of cells):
and found that the bar which is hiding comes from navigation controller:
So 2 questions:
what is this view ?
How to avoid it coming over the table view ?
I have a solution by replacing upperView by a header in tableView, but I would like to understand what goes on here.
Post not yet marked as solved
I get this weird behaviour of Xcode.
Version 13.2.1 or 13.2 RC (may be other).
In the storyboard I had a UITableViewController. As it does not give any flexibility to add other views in the VC, I created a new UIViewController, recreated the tableView inside as well as some other objects, added the new views I needed, redid all connections.
Then I removed the UITableViewController.
Everything works perfectly fine.
But sometimes (cannot find any pattern for the cases), when opening the project, the old UITableViewController appears in Storyboard. The new UIViewController doesn't even seem to be here. When I select different VC in SB, no information in Identity inspector or other inspector.
But it compiles and runs OK, using the new UIViewController.
I cleaned build folder, closed Xcode, reboot the Mac, to no avail.
Only way to get it solved was to close the SB and reopen it…
Is there a cache somewhere in SB that is not cleared ?
Post not yet marked as solved
Here is the set up:
I try to set a constraint for the top of tableView relative to safe area.
No way by control-drag from tableView to Safe area.
But if i create such a constraint for another object (here, like upperView) and then edit the constraint in Inspector, I can replace UpperView by tableView ; and get my constraint set.
What am I missing here ?
Post not yet marked as solved
I get a surprising crash when adapting constraints.
Xcode 13.2.1
iOS 15.2 on simulator
Here is the set up in storyboard:
A subclass of UIView (PopoverView) to draw a popover like frame and label and button inside.
PopoverView can set its arrow position all around, for instance on the right, so that popover will appear on the left of an object,
or on the left, to appear on the right.
Button tap is used to loop through the arrow position.
I have defined constraints (and their IBOutlets), and notably for the centerX position of popoverView to centerX of the label.
I adapt the value of the constraints in viewWillLayoutSubviews to position the popover in correct position relative to the label.
Now the problem.
To position the popover on the right of the label, I set its centerX constraint as follows in viewWillLayoutSubviews():
popoverCenterToLabelCenterConstraint.constant = (popoverLabel.frame.width + label.frame.width) / 2
That works OK
To position the popover on the left of the label, I set its constraint as follows (offset the opposite value):
popoverCenterToLabelCenterConstraint.constant = -(popoverLabel.frame.width + label.frame.width) / 2
I also tried:
popoverCenterToLabelCenterConstraint.constant = -popoverLabel.frame.width / 2 - label.frame.width / 2
App does not crash but hangs, apparently in an infinite loop.
Idem if I divide by 2.0 instead of 2 : label.frame.width / 2.0
The width of the label, at this point of code, is 92.33333333333333
So I replaced by the value directly:
popoverCenterToLabelCenterConstraint.constant = -popoverLabel.frame.width / 2 - 46.2
and it works OK. Idem with 46.1
So the problem is not due to the position of popoverView
If I replace the div by 2 by 2.01 :
- popoverCenterToLabelCenterConstraint.constant = -popoverLabel.frame.width / 2 - label.frame.width / 2.01
it works !!!!!!
Conclusion: it is the exact div by 2 that causes the hanging.
What could be the reason for this strange behaviour ?
In this app I get access to QRCode.
Reading works perfectly from the camera.
Now I am struggling to get the image that was processed by the built in QRCode reader.
I have found many hints on SO, but cannot make it work.
Here is the code I have now.
It is a bit long, I have to slit in 2 parts
I looked at:
// https://stackoverflow.com/questions/56088575/how-to-get-image-of-qr-code-after-scanning-in-swift-ios
// https://stackoverflow.com/questions/37869963/how-to-use-avcapturephotooutput
import UIKit
import AVFoundation
class ScannerViewController: UIViewController, AVCaptureMetadataOutputObjectsDelegate {
		fileprivate var captureSession: AVCaptureSession! // use for QRCode reading
		fileprivate var previewLayer: AVCaptureVideoPreviewLayer!
		
		// To get the image of the QRCode
		private var photoOutputQR: AVCapturePhotoOutput!
		private var isCapturing = false
		
		override func viewDidLoad() {
				super.viewDidLoad()
				var accessGranted = false
			 //	switch AVCaptureDevice.authorizationStatus(for: .video) {
// HERE TEST FOR ACCESS RIGHT. WORKS OK ;
// But is .video enough ?
				}
				
				if !accessGranted {	return }
				captureSession = AVCaptureSession()
				
				photoOutputQR = AVCapturePhotoOutput() // IS IT THE RIGHT PLACE AND THE RIGHT THING TO DO ?
				captureSession.addOutput(photoOutputQR)	 // Goal is to capture an image of QRCode once acquisition is done
				guard let videoCaptureDevice = AVCaptureDevice.default(for: .video) else { return }
				let videoInput: AVCaptureDeviceInput
				
				do {
						videoInput = try AVCaptureDeviceInput(device: videoCaptureDevice)
				} catch {	return }
				
				if (captureSession.canAddInput(videoInput)) {
						captureSession.addInput(videoInput)
				} else {
						failed()
						return
				}
				
				let metadataOutput = AVCaptureMetadataOutput()
				
				if (captureSession.canAddOutput(metadataOutput)) {
						captureSession.addOutput(metadataOutput) // SO I have 2 output in captureSession. IS IT RIGHT ?
						
						metadataOutput.setMetadataObjectsDelegate(self, queue: DispatchQueue.main)
						metadataOutput.metadataObjectTypes = [.qr]	// For QRCode video acquisition
						
				} else {
						failed()
						return
				}
				
				previewLayer = AVCaptureVideoPreviewLayer(session: captureSession)
				previewLayer.frame = view.layer.bounds
				previewLayer.frame.origin.y += 40
				previewLayer.frame.size.height -= 40
				previewLayer.videoGravity = .resizeAspectFill
				view.layer.addSublayer(previewLayer)
				captureSession.startRunning()
		}
		
		override func viewWillAppear(_ animated: Bool) {
				
				super.viewWillAppear(animated)
				if (captureSession?.isRunning == false) {
						captureSession.startRunning()
				}
		}
		
		override func viewWillDisappear(_ animated: Bool) {
				
				super.viewWillDisappear(animated)
				if (captureSession?.isRunning == true) {
						captureSession.stopRunning()
				}
		}
		
		// MARK: - scan Results
		
		func metadataOutput(_ output: AVCaptureMetadataOutput, didOutput metadataObjects: [AVMetadataObject], from connection: AVCaptureConnection) {
				
				captureSession.stopRunning()
				
				if let metadataObject = metadataObjects.first {
						guard let readableObject = metadataObject as? AVMetadataMachineReadableCodeObject else { return }
						guard let stringValue = readableObject.stringValue else { return }
						AudioServicesPlaySystemSound(SystemSoundID(kSystemSoundID_Vibrate))
						found(code: stringValue)
				}
				// Get image - IS IT THE RIGHT PLACE TO DO IT ?
				// https://stackoverflow.com/questions/37869963/how-to-use-avcapturephotooutput
				print("Do I get here ?", isCapturing)
				let photoSettings = AVCapturePhotoSettings()
				let previewPixelType = photoSettings.availablePreviewPhotoPixelFormatTypes.first!
				print("previewPixelType", previewPixelType)
				let previewFormat = [kCVPixelBufferPixelFormatTypeKey as String: previewPixelType,
														 kCVPixelBufferWidthKey as String: 160,
														 kCVPixelBufferHeightKey as String: 160]
				photoSettings.previewPhotoFormat = previewFormat
				if !isCapturing {
						isCapturing = true
						photoOutputQR.capturePhoto(with: photoSettings, delegate: self)
				}
				dismiss(animated: true)
		}
		
}
extension ScannerViewController: AVCapturePhotoCaptureDelegate {
	
		func photoOutput(_ output: AVCapturePhotoOutput, didFinishProcessingPhoto photo: AVCapturePhoto, error: Error?) {
			
				isCapturing = false
				print("photo", photo, photo.fileDataRepresentation())
				guard let imageData = photo.fileDataRepresentation() else {
						print("Error while generating image from photo capture data.");
						return
				}
		 }
}
I get the following print on console
Clearly photo is not loaded properly
Do I get here ? false
previewPixelType 875704422
photo <AVCapturePhoto: 0x281973a20 pts:nan 1/1 settings:uid:3 photo:{0x0} time:nan-nan> nil
Error while generating image from photo capture data.
Post not yet marked as solved
Since a few hours, Sat 1/29/2022, several pages of the forum do not open, such as:
https://developer.apple.com/forums/
https://developer.apple.com/forums/tags/ios
all showing the same messages:
Other tags open without problem.
And those open with a payload:
https://developer.apple.com/forums/?page=1&sortBy=lastUpdated
https://developer.apple.com/forums/search/?q=column&page=1&sortBy=lastUpdated
https://developer.apple.com/forums/tags/ios/?page=2 works, but page=1 doesn't
Does anyone experience the same errors ?
Conf:
MacOS 12.2 (21D49)
Safari Technology Preview Release 139 (Safari 15.4, WebKit 17613.1.14.41.3)
But the pages open correctly on Firefox, Chrome.
Does not open either on Safari Version 15.3 (17612.4.9.1.5)
So issue is apparently on Safari probably not MacOS 12.2 (21D49) , nor on server side.
Claude31.