63
votes
12
answers
2.4K
views
Failed to find or create execution context for description <IBCocoaTouchPlatformToolDescription: 0x7fa8bad9a6f0>
I'm working on a project for iOS and I'm doing the programming with Visual Studios and it connects t
51
votes
20
answers
1.3K
views
Failure [INSTALL_FAILED_UPDATE_INCOMPATIBLE] even if app appears to not be installed
When trying to deploy my app to the Android device I am getting the following error: Deployment failed becaus
48
votes
7
answers
2.3K
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Convert UTF-8 encoded NSData to NSString
I have UTF-8 encoded NSData from windows server and I want to convert it to NSString for iPhone. Since data co
61
votes
18
answers
2K
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UITableViewCell, show delete button on swipe
How do I get the delete button to show when swiping on a UITableViewCell? The event is never raised and the de
50
votes
30
answers
2.9K
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iPhone UITextField - Change placeholder text color
I'd like to change the color of the placeholder text I set in my UITextField controls, to make it black.
69
votes
26
answers
2.4K
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Presenting modal in iOS 13 fullscreen
In iOS 13 there is a new behaviour for modal view controller when being presented. Now it's not fullscre
56
votes
21
answers
339
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Giving UIView rounded corners
My login view has a subview which has a UIActivityView and a UILabel saying "Signing In…". This subview has
59
votes
6
answers
719
views
What are Unwind segues for and how do you use them?
iOS 6 and Xcode 4.5 has a new feature referred to as "Unwind Segue": Unwind segues can allow transitioning
67
votes
17
answers
1.4K
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How to tell if UIViewController's view is visible
I have a tab bar application, with many views. Is there a way to know if a particular UIViewController is curr
60
votes
9
answers
1.6K
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What does the NS prefix mean?
Many classes in Cocoa/Cocoa Touch have the NS prefix. What does it mean?
62
votes
6
answers
495
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Send and receive messages through NSNotificationCenter in Objective-C?
I am attempting to send and receive messages through NSNotificationCenter in Objective-C. However, I haven&apo
63
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30
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1.5K
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Xcode 6 Bug: Unknown class in Interface Builder file
I upgraded to Xcode 6 beta 4 and now my App continuously crashes with the message Unknown class X in Inter
59
votes
30
answers
1.1K
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Attempt to present UIViewController on UIViewController whose view is not in the window hierarchy
Just started using Xcode 4.5 and I got this error in the console: Warning: Attempt to present < finishV
57
votes
30
answers
414
views
Why is there extra padding at the top of my UITableView with style UITableViewStyleGrouped in iOS7
Starting in iOS7, there is additional space at the top of my UITableView's which have a style UITableView
55
votes
30
answers
1K
views
How do I test if a string is empty in Objective-C?
How do I test if an NSString is empty in Objective-C?
56
votes
7
answers
666
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Version vs build in Xcode
I have an app that I developed with Xcode 3 and recently started editing with Xcode 4. In the target summary I
63
votes
30
answers
372
views
This action could not be completed. Try Again (-22421)
I am trying to upload an Apple TV App to the App Store for testing purposes, but I got the issue: This Action
70
votes
15
answers
1.7K
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Xcode 6: Keyboard does not show up in simulator
The keyboard does not show up when I run the simulator and click in the UITextView. How do I re-enable the key
57
votes
14
answers
1.8K
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Hide strange unwanted Xcode logs
When using the Xcode 8+ and creating a new blank project, the following logs appear when running the applicati
54
votes
25
answers
2.4K
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How to link to apps on the app store
I am creating a free version of my iPhone game. I want to have a button inside the free version that takes peo
