NSURLConnection Download multiple images

Question

I am trying to download multiple images from a URL stored in an XML feed. Getting the image urls from the XML is working correctly. However, the NSURLConnection is creating

Answer 1

You can use a CustomURLConnection with Tag to name de images before they download.

With this code you can make a customURLConnection, name it when you make the request, and ask for the name of the image in the connectionDidFinishLoading:

CustomURLConnection.h

#import 

@interface CustomURLConnection : NSURLConnection 
{
NSString *tag;
}

@property (nonatomic, retain) NSString *tag;

- (id)initWithRequest:(NSURLRequest *)request delegate:(id)delegate startImmediately:(BOOL)startImmediately tag:(NSString*)aTag;

@end

CustomURLConnection.m

#import "CustomURLConnection.h"

@implementation CustomURLConnection

@synthesize tag;

- (id)initWithRequest:(NSURLRequest *)request delegate:(id)delegate startImmediately:(BOOL)startImmediately tag:(NSString*)aTag 
{
self = [super initWithRequest:request delegate:delegate startImmediately:startImmediately];

    if (self) {
        self.tag = aTag;
    }
    return self;
}

- (void)dealloc 
{
    [tag release];
    [super dealloc];
}

@end

Then make the connection, a custom url connection in your parsingComplete with:

NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:yourURL];
[request setTimeoutInterval:3000.0];

CustomURLConnection *connection = [[CustomURLConnection alloc]     initWithRequest:request delegate:self startImmediately:YES tag:imageTag];

Now you can take the imageName with the CustomURLConnection tag, and save it in the connectionDidFinishLoading:

CustomURLConnection *urlConec = (CustomURLConnection*)connection;

NSMutableData *dataFromConnection = [self dataForConnection:urlConec];

and this is the code for the function dataForConnection:

- (NSMutableData*)dataForConnection:(CustomURLConnection*)connection 
{
    NSMutableData *data = [receivedData objectForKey:connection.tag];
    return data;
}

Hope that helps.