Recent questions tagged iOS

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ios - resignFirstResponder vs. endEditing for Keyboard Dismissal

In Swift, both [someTextField].resignFirstResponder() and self.view.endEditing(true) accomplish the same task - ... recommended over the other? 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 - is it possible to update UIButton title/text programmatically?

I have a UIButton, that when pressed, brings up a new view where the user can change some settings. When the ... text/title as specified in IB. 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 - Profile doesn't match the entitlements file's value for the application-identifier entitlement

I am trying to upload an app to the app store and I am getting this error on the page that has the ... Any help would be greatly appreciated. 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 - Using global variables in Objective-C

First of all, I tried almost all the solutions given in stackoverflow but I didn't succeed in ... 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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ios - static const Vs extern const

I have been using static const in my header files as so: static NSString * const myString = @"foo"; But have ... hide the value of the string? 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 - Swift Managing Memory

This question was cleaned up and the important info moved to the answer below. I have some questions about memory ... on this site a bit. 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 - XCode Instruments Allocations: Look at Live Bytes or Overall Bytes?

I am getting some memory warning in my iOS app so I am running Instruments to see the allocations. Should I ... Live or Overall bytes section? 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 - Warning: attempt to present ViewController whose view is not in the window hierarchy

In one of my apps, I'm calling a viewController from the application didReceiveLocalNotification method. The page loads ... completion:nil]; } 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 - Open Settings app from another app programmatically in iPhone

I have to open settings app from my app if gps is not enabled in iPhone. I have used the following code. It ... ), FALSE); dlclose(hndl); } 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 - UITableView add cell Animation

Can any one help me out with UITableView animating issue? By default we have animation for deleting cell ... existing animation in UITableView. 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 - No Round Rect Button in Xcode 5?

Is drag and drop of round rect button no longer available in Xcode 5? I can't seem to find it in the ... but I just wanted to make sure. 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 - Undefined symbols for architecture armv7 when using ZXing library in Xcode 4.5

What I am trying to do Integrate Zxing, QR code reader framework, in my iPhone project. I checked out ZXing sdk ... this for 6 hours. Any idea? See Question&Answers more detail:os...

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

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999 views

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ios - Cannot Install Cocoapods - No podfile found in the project directory

I downloaded a sample project to learn how to make a UIPageViewController, and I am trying to essentially ... installing the podfile correctly? See Question&Answers more detail:os...

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

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532 views

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ios - how to convert .dae to .scn files in SceneKit

This is a screenshot from Apple's Fox sample code. As you can see, they use .scn file format for graphics ... SceneKit scene file format (.scn) 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 - Xcode 6 beta 7: storyboard adds extra space on right and left sides

When I add subview to root ViewController's view, and with auto layout setup leadingSpace,trailingSpace,topSpace ... and constraints 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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221 views

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ios - BSXPCMessage received error for message: Connection interrupted

UPDATE: Reference #19285042 and submit bug reports to apple Very weird error and not finding anything online. Its ... outputImage]]; } @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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371 views

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ios - Conflicting return type in implementation of 'supportedInterfaceOrientations': - Warning

After upgrading to Xcode 7.0 I get a warning in the UIViewControllerRotation method: - (NSUInteger) ... silence the warning. See Question&Answers more detail:os...

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

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210 views

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ios - New React Native project with old version of react native

I am trying to create a new react native project which should utilize an older version of react-native. ... requirements that are forcing 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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272 views

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ios - NSPredicate to test for NULL, and blank strings

I have an NSArray and need to filter out any strings that are null or rather, have ' ' (empty string). How ... are different kinds of null... See Question&Answers more detail:os...

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

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436 views

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ios - disable the uitableview highlighting but allow the selection of individual cells

when you tap on a cell the row gets selected and highlighted.Now what i want to do is disable the ... both the selection and highlighting. See Question&Answers more detail:os...

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

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338 views

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ios - How to add TextField to UIAlertController in Swift

I am trying to show a UIAlertController with a UITextView. When I add the line: //Add text field alertController. ... last line has no impact. See Question&Answers more detail:os...

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

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345 views

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ios - Gimbal beacon discovery

Is it possible to discover Gimbal beacons using the iOS SDK? I want to use simple ranging but I don't know the UUID of the transmitter. See Question&Answers more detail:os...

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

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235 views

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ios - Custom Cell Reorder Behavior in CollectionView

I am able to reorder my collectionView like so: However, instead of all cells shifting horizontally, I ... achieve custom reordering behavior. See Question&Answers more detail:os...

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

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525 views

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ios - How to custom Modal View Controller presenting animation?

Instead of setting uiviewcontroller's modalTransitionStyle, I want to add an CAAnimation(or some other thing). This ... a Modal 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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502 views

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ios - Failed to verify bitcode while exporting archive for ad hoc distribution - tried Xcode 8.3.3 & Xcode 9

Apps containing our framework complains about missing bitcode while exporting archive for Ad-hoc distribution. I have ... to support bitcode. See Question&Answers more detail:os...

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

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458 views

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ios - Sensitivity/Scroll speed of UIScrollView with paging

I want UIScrollView to scroll fast after fast sweep, like this. Although, when paging is turned on ... implementation using gesture recognizers? See Question&Answers more detail:os...

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

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392 views

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ios - Number of threads created by GCD?

Is there any good documention on how many threads are created by GCD? At WWDC, they told us it's modeled around ... on Lion natively). Why 66? See Question&Answers more detail:os...

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

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257 views

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ios - How to Add Live Camera Preview to UIView

I run into a problem, I'm trying to solve within UIView boundary, is there any way to Add Camera ... not enough documentation for Swift. See Question&Answers more detail:os...

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

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