nsdata

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Caching images in memory on iOS, what is smaller : a UIImage or NSData object?

I\'m working on an image cache on iOS. Images are downloaded from URL and stored in a NSDictionary as a UIImage (I do开发者_如何学Pythonn\'t want or need \"on disk\" cache).[详细]

2023-04-12 20:36 分类：问答
exif data in NSData image representation

I\'m trying to create a PhoneGap plugin which uses AFFoundation to capture photos and return the image as base64 encoded string. This all works fine but the exif data seems to be missing from the retu[详细]

2023-04-11 11:41 分类：问答
Trying to turn [NSImage imageNamed:NSImageNameUser] into NSData

If I create an NSImage via something like: NSImage *icon = [NSImage imageNamed:NSImageNameUser]; it only has one representation, a NSCoreUIImageRep which seems to be a private class.[详细]

2023-04-10 17:42 分类：问答
How do I write a PDF file from NSData source

I have a method that returns NSData from a CGPathRef like so ... + (NSData *) createPDFDataWithCGPath: (CGPathRef) path mediaBox: (CGRect) mediaBox[详细]

2023-04-09 17:10 分类：问答
problem reading hex values from file with NSString or NSData

I have a file which I need to grab some data from but I am only getting nil wh开发者_StackOverflowen i read it.[详细]

2023-04-08 20:38 分类：问答
How display section of time in different text field?

I have three text field in which i want to sho开发者_如何学Pythonw the current time. In the first text field,it shows only hours , in second text field it shows only minute and in last one it shows am[详细]

2023-04-08 10:33 分类：问答
Using NSData efficiently

I have a bit off code that manipulates Audio files by first putting all the audio file data in NSData variables. But it crashes sometimes because it uses to much RAM[详细]

2023-04-08 00:14 分类：问答
NSData to file PHP

I have NSData that I am \'POST\'ing to a PHP file on my site, from that NSData, I am writing it to a file. However, the file\'s contents are the string of NSData (range of letters and numbers) rather[详细]

2023-04-06 21:06 分类：问答
iphone: NSDATA dataWithContentsOfURL returning null

I have a problemof getting NSData via [NSData dataWithContentsOfURL: url] and giving me an null object where the url is the NSURL got it from defaultRepresentation of the asset.. The url in the NSURL[详细]

2023-04-06 05:27 分类：问答
Saving [UIColor colorWithPatternImage:image] UIColor to Core Data using NSKeyedArchiver

I\'m unable to create an NSData object from a UIColor (with a pattern) created with the factory method[详细]

2023-04-05 08:41 分类：问答