nsdata

I have a bunch of video files that I want to merge into one video file, I am using NSMutableData to achieve the task NSMutableData *concatenatedData = [[NSMutableData alloc] init]; for (int i=0; i <[videoArray count]; i ++) { [concatenatedData appendData: [videoArray objectAtIndex:i]]; } [concatenatedData writeToFile:[[NSString alloc] initWithFormat:@"%@%@", NSTemporaryDirectory(), @"outputConct.mov"] atomically:YES]; UISaveVideoAtPathToSavedPhotosAlbum([[NSString alloc] initWithFormat:@"%@%@", NSTemporaryDirectory(),@"outputConct.mov"], nil, nil, nil); after the video is saved in my camera

I try to send a photo and GPS location to server via PHP here is the PHP part: Copy from here Saving the Uploaded File The examples above create a temporary copy of the uploaded files in the PHP temp folder on the server. The temporary copied files disappears when the script ends. To store the uploaded file we need to copy it to a different location: <?php if ((($_FILES["file"]["type"] == "image/gif") || ($_FILES["file"]["type"] == "image/jpeg") || ($_FILES["file"]["type"] == "image/pjpeg")) && ($_FILES["file"]["size"] < 20000)) { if ($_FILES["file"]["error"] > 0) { echo "Return Code: " . $

I have an NSImage which I am trying to resize like so; NSImage *capturePreviewFill = [[NSImage alloc] initWithData:previewData]; NSSize newSize; newSize.height = 160; newSize.width = 120; [capturePreviewFill setScalesWhenResized:YES]; [capturePreviewFill setSize:newSize]; NSData *resizedPreviewData = [capturePreviewFill TIFFRepresentation]; resizedCaptureImageBitmapRep = [[NSBitmapImageRep alloc] initWithData:resizedPreviewData]; saveData = [resizedCaptureImageBitmapRep representationUsingType:NSJPEGFileType properties:nil]; [saveData writeToFile:@"/Users/ricky/Desktop/Photo.jpg" atomically

For my application, I need to decode an MP3 file which is stored in an NSData object. For security reasons, it is undesirable to write the NSData object to disk and re-open it using a System URL reference, even if its only locally stored for a few moments. I would like to take advantage Extended Audio File Services (or Audio File Services) to do this, but I'm having trouble getting a representation of the NSData, which exists only in memory, that can be read by these Audio File Services. Edit: I want to decode the MP3 data so I can get access to linear, PCM audio samples for manipulation.

I'm trying to understand how structs work within SWIFT. I'm familiar with how .NET handles them and how it packs bytes into a structure, etc. I'm finding some weirdness with the following code: struct exampleStruct { var ModelNumber: Byte! var MajorVersion: Byte! var MinorVersion: Byte! var Revision: Byte! } var myStruct = exampleStruct ( ModelNumber: 1, MajorVersion: 2, MinorVersion: 3, Revision: 4 ) myStruct.MinorVersion // << Returns 3 // Struct to NSData. var data = NSData( bytes: &myStruct, length: sizeof(exampleStruct) ) println("data: \(data)") The println returns: "data: <01000200

I'm trying to convert NSData generated from NSKeyedArchiver to an NSString so that I can pass it around and eventually convert it back to NSData. I have to pass this as a string (I'm using three20 URL passing). I've gone through various encodings, UTF8, ASCII, etc. and can't get anything to work. NSKeyedArchiver says that the NSData is formated as a property list: NSPropertyListBinaryFormat_v1_0. Does anyone have any idea how I can convert this NSData to a String and back again? Size of the string isn't an issue. Thanks What you want is: id<nscoding> obj; NSData * data = [NSKeyedArchiver

I got a strange EXC_BAD_ACCESS crash inside Foundation's -[NSData(NSData) getBytes:length:] method. It happens quite often, but I cannot get any meaningful information out of stack trace. There are no calls to getBytes:length: inside my code, except for open-source libraries (one in SDWebImage and one in SocketRocket ), but it doesn't seem like they're causing the crash. The only hint is that crash happens inside com.apple.CFNetwork.addPersistCacheToStorageDaemon thread, but I have no idea what is it about. Can someone help? Stacktrace from Crashlytics: Thread : Crashed: com.apple.CFNetwork

I have a need to find the dimensions of images online without downloading them. To accomplish this I do this: + (CGSize) getImageDimensions:(NSString *)url { // Send a synchronous request NSMutableURLRequest * urlRequest = [NSMutableURLRequest requestWithURL:[NSURL URLWithString: url]]; NSString *rangeString = [url hasSuffix: @"png"] ? @"bytes=0-100" : @"bytes=0-1300"; [urlRequest setValue:rangeString forHTTPHeaderField:@"Range"]; NSURLResponse * response = nil; NSError * error = nil; NSData * data = [NSURLConnection sendSynchronousRequest:urlRequest returningResponse:&response error:&error];