Recent questions tagged iOS

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I have a piece of code. I am not getting whats going inside in this code. Can anybody explain it? let wordFreqs = [ ... Gives Output: ["k","a"] 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 - React Native: Refs in ListView

It looks like the refs of views in is hard to be directly accessed. Now I have a list view with a cells. In ... in the row.). 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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719 views

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ios - The UILocalNotification sound does not stop playing

I have set a custom .aif 30 second file as the local notification sound name. And below is my code for scheduling the ... it was of no help. :( See Question&Answers more detail:os...

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

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810 views

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ios - Restrict access to Firebase storage so only my app can access it

That's my scenario: 1) I am developing an iOS app that uses Firebase storage. 2) My app has custom ... them unclear about this particular issue. See Question&Answers more detail:os...

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

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824 views

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ios - UICollectionView using sections leaves a gap between cells

I'm using a UICollectionView to show several sections of data. These sections have a fixed number of items. I want all ... : 20, 20, 10, 10 See Question&Answers more detail:os...

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

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788 views

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ios - swift remove map overlays

I am trying to remove overlays from map. func removeMapOverlay() { var removeOverlays : [AnyObject]! = self. ... exception like I explain above. See Question&Answers more detail:os...

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

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978 views

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ios - SKAudioNode not load sound from url

I want download sound from url and play it once: let sound = SKAudioNode(url:URL(string:"http://www ... uncaught exception of type NSException See Question&Answers more detail:os...

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

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692 views

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ios - iphone default map app open with different language

I successfully open Iphone default app with current user location but if user has selected a different language (e.g. ... ? thanx for any help! 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 - Reverse an audio file Swift/Objective-C

Is there a way that I could reverse and export .m4a audio file? I found a solution to reverse an audio track here ... ? } } CFRelease(buffer); } See Question&Answers more detail:os...

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

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903 views

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ios - UINavigationBar overlaps UITableView when programmatically setting prompt

I have a UINavigationController which contains a UITableViewController. This navigation controller pushes other ... my options. See Question&Answers more detail:os...

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

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885 views

1 answer

ios - Programmatically segue from UIBarButtonItem

I have three view controllers, all with two buttons each on the right and left sides of the navigation ... to the destination view controller. See Question&Answers more detail:os...

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

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729 views

1 answer

ios - How to figure out the width of a string dynamically in SwiftUI

Let's say I have a text called: This. I want to figure out the width of the text called This so that I ... #>, alignment: <#T##Alignment#>) } } See Question&Answers more detail:os...

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

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720 views

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ios - UICollectionView inside of UIScrollView

I have a UIScrollView Labels Labels UICollectionView I have disabled the UICollectionViews scrolling functionality, so I ... /hDwPH/ Dummy code See Question&Answers more detail:os...

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

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789 views

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ios - Can't animate the frame or bounds of a UISearchBar

I want to animate the position of a UISearchBar, but there's no animate effect when I change the frame or bounds ... a bug? I'm confused... See Question&Answers more detail:os...

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

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867 views

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ios - parsing NSJSONReadingAllowFragments

I am receiving some json data in my app: NSMutableDictionary *json = [NSJSONSerialization JSONObjectWithData:jsonResponse ... read this value? See Question&Answers more detail:os...

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

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1.7k views

1 answer

ios - Module AppRegistry is not a registered callable module

I'm starting with React Native development and I encountered an issue in the very beginning. When trying to run ... know where to go from 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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1.1k views

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ios - Any way to turn on bluetooth programmatically on iOS7+

I hear that iOS7 introduced this functionality with CBCentralManager but can't find how. Is possible? ... widthout use GKPeerPickerController? See Question&Answers more detail:os...

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

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821 views

1 answer

ios - Run 32 bit library on iPhone 5s 64 bit

I'am using zbar in my application. If I want to run it on my iPhone 5s with an 64 bit processor, I get ... the library is going to be updated. See Question&Answers more detail:os...

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

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741 views

1 answer

ios - Is it possible to have a Game Center "LowestScore" Leaderboard?

I've read that Game Center Leaderboard scores are only updated when the newly posted score is greater than the ... it is greater or smaller? See Question&Answers more detail:os...

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

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651 views

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ios - OBJ-C how-to: App using BLE connection and iBeacon in same device

I have a use case where my objective-c application needs to immediately use iBeacon after it's been terminated in ... am I doing wrong 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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912 views

1 answer

ios - What does registering a call for cell reuse actually do?

I don't totally understand what registering a class for cell reuse does. I understand how we use ... forCellReuseIdentifier:CellIdentifier]; } See Question&Answers more detail:os...

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

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602 views

1 answer

ios - Should I update my app upon receiving payload? Or I should always update it by allowing it to download for itself?

When your iPhone receives a WhatsApp/Telegram push notification e.g. wife: "buy pizza" Question1: Is it that ... : Is that conclusion correct? See Question&Answers more detail:os...

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

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865 views

1 answer

ios - How to create empty collection in Firestore Swift

How can I create an empty collection in Firestore (Swift)? i want to do that when I create DB users after I ... 't exists and I get a crash See Question&Answers more detail:os...

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

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800 views

1 answer

ios - swift - using replaceRange() to change certain occurrences in a string

Say I have a string, and I want to change the first "a" in that string to an "e" in order to get the ... 've got this whole method wrong. Help? See Question&Answers more detail:os...

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

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672 views

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ios - How to ask for permission to access iphone contacts addressbook again?

I am asking permission to access my contacts using the code below. ABAddressBookRef addressBookRef = ... sort of cache? See Question&Answers more detail:os...

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

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857 views

1 answer

ios - Fix odd DatePicker animation behaviour in SwiftUI form

I'm getting some odd animation behaviour with DatePickers in a SwiftUI form. A picture is worth a thousand ... to provide anything else required See Question&Answers more detail:os...

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

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838 views

1 answer

ios - Potential Bug with JSON Decoder Swift

I believe I have found a bug in the JSONDecoder. If one tries to decode a JSON object with more than 8 ... .3 Thanks for all your help! See Question&Answers more detail:os...

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

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928 views

1 answer

ios - UIAlertController - change size of text fields and add space between them

My alert looks like this: Is it possible to make inputs bigger and add space between them? Here is a snippet ... textField.frame = oldFrame }) See Question&Answers more detail:os...

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

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