iPhone JSON - Iterate NSArray and get values - iphone

Question

I've been trying to solve this myself (I was awake all last night banging my head against a wall) but hopefully someone here can help me.
I have used this tutorial to connect to my JSON datasource (http://www.mobileorchard.com/tutorial-json-over-http-on-the-iphone/) and it works fine but I would now like to get the values (by object key I think).
My json data is as follows:
[{"Id":"1","Name":"Richard","NameOfFile":"1.jpg"},{"Id":"395","Name":"Alex","NameOfFile":"390.jpg"}]
And the code i'm using to connect to it is as follows.
- (void)connectionDidFinishLoading:(NSURLConnection *)connection
{
[connection release];
NSString *responseString = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding];
[responseData release];
SBJSON *json = [[SBJSON new] autorelease];
NSArray *myArray = [json objectWithString:responseString error:nil];
[responseString release];
for (int i = 0; i < [myArray count]; i++)
{
for(int colIndex = 0; colIndex < 5; colIndex++)
{
UIImage * myimage = [UIImage imageWithData: [NSData dataWithContentsOfURL: [NSURL URLWithString: #"http://www.goweruk.com/Images/Uploaded/220/873.jpg"]]];
UIImageView *myimageview = [[UIImageView alloc] initWithFrame:CGRectMake(0.0f, 0.0f,50.0f, 50.0f)];
[myimageview setImage:myimage];
CGRect frameRect = myimageview.frame;
frameRect.origin.x = (frameRect.size.width + 14) * colIndex;
frameRect.origin.y = (frameRect.size.height + 14) * i;
myimageview.frame = frameRect;
[self.view addSubview:myimageview];
[myimageview release];
}
}
}
So what i'd like to do is inside that loop, get an item value. Does anyone know how I would do that?

Answer 1

That NSArray is an array of NSDictionary objects, so you will first need to get the dictionary at the desired index using objectAtIndex:, then iterate through the dictionary using for..in:
for (int i = 0; i < [myArray count]; i++)
{
NSDictionary *dict = [myArray objectAtIndex:i];
for(NSString *key in dict) {
//do something with key or [dict objectForKey:key];
}
}