Recent questions tagged IOS

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ios - iOS7 Storyboard image picker not working :(

Im trying to set up an imagePicker in a new iOS7 Xcode project using storyboards but can't seem to find ... self.view addSubview:imageView]; } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ios - "Attempt to delete row from section 1, but there are only 1 sections before update"

I'm trying to delete the rows that don't meet the criteria in the for loop. However, I'm getting and ... ) } } self.theTableView.endUpdates() See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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759 views

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ios - How to convert document to a custom object in Swift 5?

I've been trying to convert the document retrieved from the Firebase's Cloud Firestore to a custom object in Swift ... know how to resolve this? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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851 views

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ios - Setting action for back button in navigation controller

I'm trying to overwrite the default action of the back button in a navigation controller. I've provided a ... viewDidUnload doesn't do that)? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.2k views

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ios - touchesBegan not called in UIView subclass

I know there already are some questions about this but I couldn't find a solution. There is a very simple code that ... but I can't find it. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.4k views

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ios - Comparing in objective C - Implicit conversion of 'int' to 'id' is disallowed with ARC

I i'm getting the error "Implicit conversion of 'int' to 'id' is disallowed with ARC" at the line marked ... } } return drawnNumbers; } @end See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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808 views

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ios - Cant Change UIView Background Color From Black

This is my first time in which I've encountered problems with drawRect. I have a simple UIView subclass with a ... is what the view looks like: See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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858 views

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ios - unrecognized selector sent to instance 0x8c9a6d0

Can anyone tell me what is going on in this error code [UIViewController collectionView:numberOfItemsInSection:]: ... have i done wrong See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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825 views

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ios - How do I unwrap an Optional when pattern matching tuples in Swift?

In Swift, there's a common if let pattern used to unwrap optionals: if let value = optional { print("value is ... go to: (unwrappedUrl!)") } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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853 views

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ios - UIColor extension convenience init not working

convenience init(red:Int,green:Int,blue:Int,alpha:CGFloat) { var red: CGFloat = CGFloat(red)/255.0 var ... this function, error occurs still! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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721 views

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ios - Dismiss an already delivered UILocalNotification?

Is it possible to do this? UIApplication's scheduledLocalNotifications doesn't seem to return notifications ... 'scheduledLocalNotifications'. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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997 views

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ios - Don't reuse cell in UITableView

let cell = tableView.dequeueReusableCellWithIdentifier("cellReuseIdentifier", forIndexPath: indexPath) as! CustomTableViewCell I ... in memory. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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930 views

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ios - Xcode UI Test environment variables not being passed from Scheme

In Xcode 9.2, for my iOS app, I have a Scheme for running my UI Test suite. In this scheme, under ... . Am I setting something incorrectly here? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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931 views

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ios - Get the filename of image saved to photos album

In modern iOS (2017), here's actually the only way I know to save an image to the iOS photos system, and get ... it really the way to go, today? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.2k views

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ios - Motion Manager is not working in Swift

I am try to use motion manager in Swift but the log inside my update block never prints. var motionManager: ... block isn't being called? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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675 views

1 answer

ios - Allow only access to camera device in HTML5

I'm currently developing application using the camera for iphone in HTML5 with <input type="file" accept="capture ... to separate the two types? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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664 views

1 answer

ios - Add extra row to a UITableView managed by NSFetchedResultsController

I'm using a UITableViewController for a table in my app, and I've added an NSFetchedResultsController ... by an NSFetchedResultsController? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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829 views

1 answer

ios - Swift split string at first match of a character

I'm trying to make an iOS app in Swift that requires me to split a line of text at the first colon ... character, rather than along all matches? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.1k views

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ios - iOS14 navigationItem.largeTitleDisplayMode = .always not work

I have a ViewController and a DetailViewController, in the ViewDidLoad of the ViewController I set the following code, ... from the App Store See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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706 views

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ios - viewing coredata with sqlite browser in xcode 5

Since upgrading to XCode 5, I am unable to view data in the sqlite file in my Applications Folder. The folder ... data in CoreData. Any ideas? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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765 views

1 answer

ios - How can I queue multiple accessibility notifications for VoiceOver?

This is how I'm notifying the system to read out my elements: UIAccessibilityPostNotification( ... missing here? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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630 views

1 answer

ios - Firebase Query snapshot nil?

I'm creating a simple chat app to learn Swift and Firebase. I have a query that checks for a chat room's messages ... username" : "tester" } } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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764 views

1 answer

ios - Invalid Binary Error (The bundle uses a bundle name or display name associated with an Apple app) after App Store submission

We tried to submit a new build to iTunesConnect for updating an existing application. It is a quick patch ... help will be truly appreciated. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

803 views

1 answer

ios - How to adjust a label size to fit the length of the text

I have searched the solution to this in the past QAs, but could not find the right one. Does anyone know how ... or code sample. Thank you. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.0k views

1 answer

ios - OSStatus error 2003334207 when using AVAudioPlayer

I am trying to play an MP3 file (works when played via VLC/iTunes) when a button is pressed. Here is ... CDEpisode object) and it still fails. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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682 views

1 answer

ios - Is there any way to attach a NSDictionary of parameters to an NSURLRequest instead of manually making a string?

AFNetworking allows you to add an NSDictionary of parameters to a request, and it will append them to the request. ... I just add a category? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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733 views

1 answer

ios - iOS9 “This game is not recognized by game center.”

I am having trouble getting game center to work with my app. Whenever I try to authenticate the user it ... problem. Thanks in advance! Michael See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

691 views

1 answer

ios - "Cannot assign to" error iterating through array of struct

I have an array of structs: struct CalendarDate { var date: NSDate? var selected = false } private var collectionData ... [i].selected = false } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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