How to assign values from NSMutableDictionary to NSArray - iphone

Question

I am doing JSON parsing and I want to show my parsed data in a UITableView.
For that, I am trying to assign parsed data from NSMutableDictionary to NSArray to show in the table view but the array returns null.
Here my array returns null value;
NSMutableDictionary *tempDict1;
NSArray *arr = [[tempDict1 valueForKey:#"rates"] componentsSeparatedByString:#";"];
code
- (void)connectionDidFinishLoading:(NSURLConnection *)connection
{
[connection release];
NSString *responseString = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding];
self.responseData = nil;
// NSArray *latestrates = [[responseString JSONValue] objectForKey:#"rates"];
[responseString release];
values = [responseString JSONValue];
array = [[NSMutableArray alloc] init];
array = [values valueForKey:#"rates"];
NSLog(#"array values:--> %#",array);
tempDict1 = (NSMutableDictionary *)array;
arr = [[tempDict1 valueForKey:#"rates"] componentsSeparatedByString:#";"];
NSString *subStar = #"=";
NSMutableArray *arrTitle = [[NSMutableArray alloc] init];
NSMutableArray *arrValues = [[NSMutableArray alloc] init];
[arrTitle removeAllObjects];
[arrValues removeAllObjects];
for (int i=0; i<[arr count]-1; i++)
{
[arrTitle addObject:[[arr objectAtIndex:i] substringToIndex:NSMaxRange([[arr objectAtIndex:i] rangeOfString:subStar])-1]];
[arrValues addObject:[[arr objectAtIndex:i] substringFromIndex:NSMaxRange([[arr objectAtIndex:i] rangeOfString:subStar])]];
NSLog(#"arrTitle is:--> %#",arrTitle);
}
tempDict1 = (NSMutableDictionary*)[array objectAtIndex:0];
array = [values valueForKey:#"rates"];
NSLog(#"tempDict--%#",tempDict1);
[arr retain];
[tbl_withData reloadData];
}

Answer 1

Try editing fourth line in connectionDidFinishLoading to
values = [responseString JSONFragments];

Answer 2

NSError *error = nil;
NSArray *array = [NSJSONSerialization JSONObjectWithData:responseData options:NSJSONReadingMutableContainers error:&error];
NSLog(#"Your data - %#",array);
Now you can get it according to data format.
EDIT
I think you also dont know how to get a webResponse.
So here is a way to get webResponse -
First set XML delegate in your ViewController.h class
and declare a NSMutableData globaly
#interface ViewController : UIViewController<NSXMLParserDelegate>
#property(nonatomic, retain)NSMutableData *responseData;
#end
Now synthesized this responseData in your ViewController.m class
#synthesize responseData = _responseData;
Now you can send request on server in viewDidLoad: method its up to you in which method you want to send it.
-(void)viewDidLoad
{
NSString *urlString = [NSString stringWithFormat:#"http://EnterYourURLHere"];
NSURL *URL = [NSURL URLWithString:urlString];
NSMutableURLRequest *urlRequest = [[NSMutableURLRequest alloc]init];
[urlRequest setURL:URL];
[urlRequest setHTTPMethod:#"POST"];
[urlRequest setValue:#"application/x-www-form-urlencoded" forHTTPHeaderField:#"Content-type"];
NSURLConnection *urlConnection = [[NSURLConnection alloc]initWithRequest:urlRequest delegate:self];
if(!urlConnection)
{
[[[UIAlertView alloc]initWithTitle:#"OOoopppssS !!" message:#"There is an error occured. Please check your internet connection or try again." delegate:self cancelButtonTitle:#"OK" otherButtonTitles:nil, nil] show];
}
}
#pragma mark - Parsing delegate methods
-(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
{
self.responseData = [[NSMutableData alloc]init];
[self.responseData setLength:0];
}
-(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
{
[self.responseData appendData:data];
}
-(void)connectionDidFinishLoading:(NSURLConnection *)connection
{
//Now parse your data here -
NSError *error = nil;
NSArray *array = [NSJSONSerialization JSONObjectWithData:self.responseData options:NSJSONReadingMutableContainers error:&error];
NSLog(#"Your data - %#",array);
}