nsdata

We're using dataWithContentsOfURL because it is, uh, simple... NSData *datRaw = [NSData dataWithContentsOfURL:ur]; Now, of course, that will hang the main UI thread. So we put it on another thread. We do that exactly thus, -(void)performSearch:(NSString *)stuff then:(void(^)(void))after { dispatch_queue_t otherThread =dispatch_queue_create(nil,0); dispatch_queue_t mainThread =dispatch_get_main_queue(); dispatch_async(otherThread, ^{ self.resultsRA = [self ... calls dataWithContentsOfURL ...]; dispatch_async(mainThread, ^{ if (after) after(); }); }); } (Incidentally, here's an excellent

i am converting image from picker into nsdata(jpeg representation) and then converting it into nsstring using the following code NSData *data=UIImageJPEGRepresentation(image,1.0); NSString *imageString=[[NSString alloc]initWithData:data encoding:NSUTF8StringEncoding]; [[NSUserDefaults standardUserDefaults] setObject:imageString forKey:@"image_name"]; and at the other end where i need to display the image the uiimage is formed as follows. NSString *imageString=[[NSString alloc] init]; imageString=[[NSUserDefaults standardUserDefaults] objectForKey:@"image_name"]; UIImage *image=[UIImage

I', m using the Objective Zip library to compress several images i took. I came to the point (I guess) where I' zipping an image. Now I'd like to send this zipped File with the mailcomposer. However I need to declare a "NSData object" within my mail function. [picker addAttachmentData:"NSData object" mimeType:@"application/zip" fileName:@"test.zip"]; Here's a snippit of my code -(IBAction)sendMail{ NSArray * paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsDirectory = [paths objectAtIndex:0]; NSString *path = [documentsDirectory

There's a special NSString initWithData method for grabbing bits and converting them into string. However, I haven't found that in NSNumber class ref. Currently, I'm getting raw data (bytes) from a server in NSData format. I know how to do that in C, using memcpy and int pointers. But I am curious about what the convenience methods are for doing that straight from NSData . No conversion is needed. For example, I'm getting 00000010 byte, and I need to turn that into NSNumber of value 2, or NSInteger . ikuramedia NSData is just a bucket for bytes and has no knowledge of the data contained