Questions tagged [ios]
iOS is the mobile operating system running on the Apple iPhone, iPod touch, and iPad. Use this tag [ios] for questions related to programming on the iOS platform. Use the related tags [objective-c] and [swift] for issues specific to those programming languages.
688,229
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Why NSUserDefaults failed to save NSMutableDictionary in iOS?
I'd like to save an NSMutableDictionary object in NSUserDefaults. The key type in NSMutableDictionary is NSString, the value type is NSArray, which contains a list of object which implements NSCoding. ...
- 9,765
317
votes
35
answers
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Adding images or videos to iPhone Simulator
I am trying to use UIImagePickerController with UIImagePickerControllerSourceTypePhotoLibrary, but it says, "No photos". Where does the simulator get the images from? Where should I copy the images so ...
- 5,645
5
votes
1
answer
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Display the iPhone keyboard
I've run into a problem with the UITextView that seems to be related to having a scrollable view within a scrollable view.
In order to remedy this i thought i would attempt to write my own ...
- 4,664
4
votes
5
answers
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Software and hardware requirements for iOS development
What are the options for developing iPhone apps?
Currently I've tried to install gnu kit for Linux without success! Too many steps, and at the and I was unable to compile a single app.
The Apple SDK ...
- 451
406
votes
21
answers
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Can you animate a height change on a UITableViewCell when selected?
I'm using a UITableView in my iPhone app, and I have a list of people that belong to a group. I would like it so that when the user clicks on a particular person (thus selecting the cell), the cell ...
Ted
256
votes
16
answers
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How can my iphone app detect its own version number?
I'm writing an iPhone app. It's already been published, but I would like to add a feature where its version number is displayed.
I'd rather not have to do this manually with each version I release......
cmos
296
votes
21
answers
130k
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How can I programmatically determine if my app is running in the iphone simulator?
As the question states, I would mainly like to know whether or not my code is running in the simulator, but would also be interested in knowing the specific iphone version that is running or being ...
- 5,460
21
votes
7
answers
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How do I reset after a UIScrollView zoom?
I have a Graph being drawn inside a UIScrollView. It's one large UIView using a custom subclass of CATiledLayer as its layer.
When I zoom in and out of the UIScrollView, I want the graph to resize ...
- 39.6k
376
votes
31
answers
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Determine device (iPhone, iPod Touch) with iOS
Is there a way to determine the device running an application. I want to distinguish between iPhone and iPod Touch, if possible.
- 5,588
327
votes
34
answers
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Adjust UILabel height depending on the text
Consider I have the following text in a UILabel (a long line of dynamic text):
Since the alien army vastly outnumbers the team, players must use the post-apocalyptic world to their advantage, such ...
- 20.5k
3
votes
4
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iPhone SDK: Play a single WAV from a button
I am currently trying out this code:
NSString *path = [[NSBundle mainBundle] pathForResource:@"dream" ofType:@"m4a"];
AVAudioPlayer* theAudio=[[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL ...
- 7,605
21
votes
7
answers
27k
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Customizing the More menu on a Tab bar
I am using a tab bar (UITabBarController) on my app and I wish to customize the appearance of the table that appears when you click the more button.
I have worked out how to change the appearance of ...
- 3,696
76
votes
13
answers
34k
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iPhone "slide to unlock" animation
Any ideas as to how Apple implemented the "slide to unlock" (also, "slide to power off" is another identical example) animation?
I thought about some sort of animating mask - but masking is not ...
Russ
106
votes
15
answers
94k
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How to get RGB values from UIColor?
I'm creating a color object using the following code.
curView.backgroundColor = [[UIColor alloc] initWithHue:229 saturation:40 brightness:75 alpha:1];
How can I retrieve RGB values from the created ...
- 1,317
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1
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Accessing image data from a bitmap given a pointer
My problem is reading the pixel data correctly once I have the pointer.
So I have an image that takes up the whole iPhone screen and has no alpha channel (24 bits per pixel, 8 bits per component, 960 ...
swyitch