Recent questions tagged iOS

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ios - Issue with UnsafePointer<Uint8> in SQLite project in Swift

We are implementing SQLite in iOS, in Swift, without using wrappers or Objective-C bridging. ... a UnsafePointer_UInt8 to UnsafePointer_Int8 See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ios - Decode Base-64 encoded PNG in an NSString

I have some NSData which is Base-64 encoded and I would like to decode it, I have seen an example that looks ... is the proper thing to do. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ios - Swiftui - How do I initialize an observedObject using an environmentobject as a parameter?

I'm not sure if this is an antipattern in this brave new SwiftUI world we live in, but essentially I have ... . How should I approach this? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ios - Negative number modulo in swift

How does modulo of negative numbers work in swift ? When i did (-1 % 3) it is giving -1 but the remainder is 2. What is the catch in it? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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400 views

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ios - Using SecRandomCopyBytes in Swift

I want to generate random bytes using SecRandomCopyBytes in Swift 3.0. Here is how I did it in Swift 2.2 ... know how to fix this? Thanks See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ios - How to make POST NSURLRequest with 2 parameters?

I want to add 2 parameters to NSURLRequest. Is there a way or should I use AFnetworking? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ios - Decode base64URL to base64 -- Swift

I haven't found properly way how to decode base64URL to base64 format in swift. According to base64url to ... no solutions on stackoverflow. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ios - ARC memory leaks

I am experiencing memory leaks linked to NSMutableArray's in a project configured to use ARC, which I thought was ... Many thanks for your help. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ios - Difference between _ and self. in Objective-C

Is there a difference between using the underscore and using the self keyword in Objective-C when calling an @property ... _myString = @"test"; See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ios - Is it possible to use Core Location / GPS without any internet connection / disabled cellular network?

I need to capture the GPS coordinates (no reverse geocoding, names, etc) in regions where there is no internet such ... just want to be sure. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ios - Storyboard View Elements Greyed Out

I'm currently trying to edit a storyboard file, in Xcode 6 (not sure if this is an Xcode bug, or if i've ... Anyone have an idea on how to fix? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ios - SWIFT - BLE communications

I've got a SWIFT application that have to send a value to my Arduino with Bluetooth LowEnergy module ... .DisclosureIndicator return cella } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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172 views

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ios - Xcode - Sharing app - PackageApplication failed with exit code 1

I've created an ad hoc distribution build for my iPhone app using Xcode 4.1. The target successfully builds ... : codesign failed with error 1 See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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270 views

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ios - Objective-C get a class property from string

I've heard a number of similar questions for other languages, but I'm looking for a specific scenario. My ... by using the dataToGet variable? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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473 views

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ios - UITableView inside UIScrollView not receiving first tap after scrollling

Brief I am having an issue with a UITableView inside a UIScrollView. When I scroll the external scrollView, the ... happens in the same way. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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384 views

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ios - How to avoid adding multiple NSNotification observer?

Right now the API doesn't seem to provide a way to detect if an observer has already been added for a ... created a category to facilitate this? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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327 views

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ios - iPhone : Daily local notifications

I am trying to implement local notification This is what I have set // Current date NSDate *date = [NSDate date]; ... . How can do that ? Thanks See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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515 views

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ios - Xcode 5.1: missing required architecture arm64

Just upgraded to Xcode 5.1, getting the following error: ignoring file ...Dependencies/SalesforceNetworkSDK/ ... being linked (armv7) See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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455 views

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ios - Looping Through NSAttributedString Attributes to Increase Font SIze

All I need is to loop through all attributes of NSAttributedString and increase their font size. So far I got ... for setAttributes:range: }]; See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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406 views

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ios - Handling Push Notifications when App is Terminated

When my App is not running and receives a Push Notification, if I click on that notification, the App is ... push for a later retrieval. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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315 views

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ios - NSAttributedString superscript styling

I want to superscript all the instances of ? character in a block of text (legal disclaimer, naturally ;)) and ... of text of different size. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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582 views

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ios - Create a copy of a UIView in Swift

Because objects are reference types, not value types, if you set a UIView equal to another UIView, the views ... copy given any UIView object. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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361 views

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ios - Xcode 6 keeps renaming my app's directory in iOS8 simulator after each run.

I'm running Xcode 6 Beta 5 but this has been happening since the first beta. My app's directory in the ... "feature" that I'm misunderstanding? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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636 views

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ios - Enable Camera and Mic access in wkwebview

I have a mobile-optimized web app that makes use of getUserMedia to access webcam and mic resources. I'm wrapping ... to a local stream source? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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329 views

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ios - UIDatePicker in UIPopover

I have searched the entire internet (maybe I am exaggerating a little) for a tutorial on how to put a ... app crashes. Can anyone help? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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288 views

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ios - hide keyboard for text field in swift programming language

I have little experience in Objective-C. I want to hide the keyboard for a text field using the Swift programming ... have any luck with this? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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244 views

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ios - AutoLayout link two UILabels to have the same font size

I have two UILabels next to each other in row with left and right adjustments so that it looks like below. |- ... know how to this, any ideas? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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276 views

1 answer

ios - Open UITableView edit action buttons programmatically

I have a UIPageViewController that have UITableViewControllers inside it, and the swipe left gestures are conflicted ... the swipe gesture? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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