nsdata

I couldn't find a solution to this problem in Swift (all of them are Objective-C, and they deal with pointers which I don't think exist in Swift in the same form). Is there any way to convert a NSData object into an array of bytes in the form of [Uint8] in Swift? You can avoid first initialising the array to placeholder values, if you go through pointers in a slightly convoluted manner, or via the new Array constructor introduced in Swift 3: Swift 3 let data = "foo".data(using: .utf8)! // new constructor: let array = [UInt8](data) // …or old style through pointers: let array = data

How do you convert an unsigned char array to an NSData in objective c? This is what I am trying to do, but it doesn't work. Buffer is my unsigned char array. NSData *data = [NSData dataWithBytes:message length:length]; You can just use this NSData class method + (id)dataWithBytes:(const void *)bytes length:(NSUInteger)length Something like NSUInteger size = // some size unsigned char array[size]; NSData* data = [NSData dataWithBytes:(const void *)array length:sizeof(unsigned char)*size]; You can then get the array back like this (if you know that it is the right data type) NSUInteger size =

I'm using some tricks to try to read the raw output of an AVAssetWriter while it is being written to disk. When I reassemble the individual files by concatenating them, the resulting file is the same exact number of bytes as the AVAssetWriter's output file. However, the reassembled file will not play in QuickTime or be parsed by FFmpeg because there is data corruption. A few bytes here and there have been changed, rendering the resulting file unusable. I assume this is occurring on the EOF boundary of each read, but it isn't consistent corruption. I plan to eventually use code similar to this

I have an iPhone application that needs to save an image onto the database in BLOB format. The problem is that if the image is in .gif format then it cannot be converted to NSDATA format and hence i am not been able to save that onto the database in BLOB format. What should I do? Please help with some code.. Thanks in advance Joy A gif image can be converted into NSData...Here's the code snippet: NSString *pathForGif = [[NSBundle mainBundle] pathForResource: @"gifFile" ofType: @"gif"]; NSData *gifData = [NSData dataWithContentsOfFile: pathForGif]; NSLog(@"Data: %@", gifData); The log looked

NSData *imageUrl = [NSData dataWithContentsOfURL:[NSURL URLWithString:[[self.content objectAtIndex:indexPath.row] valueForKey:@"imageUrl"] ]]; cell.thumbnailImageView.image=[UIImage imageWithData:imageUrl]; this is how i use imageUrl to load them into UIImage but it takes a while to load and the program seems like it crashed or entered to an infinite loop. How can i make the content of UIImage with url but faster? use sdwebimage and down load the library file from here the few steps you do follow add the sdwebimage in your project after that in your .h file #import "UIImageView+WebCache.h" in