IOS NSDictionary element to NSString - ios

Question

Hi I am trying to extract key value from NSDictionary, the dictionary value looks like below screen shot
I need to extract the value with key "TITLE" to NSString, using the code
NSDictionary* tmp = [self getDBRequest:req];
NSString * title =[tmp valueForKey:#"TITLE"];
But giving the the value like
Is there anything wrong with above code?
Edit:
NSLog(#"%#", tmp);
Gives the output
2015-12-31 11:04:52.530 SimpleTable[610:10059] (
{
DESCRIPTION = "30% OFF ON NEW ";
"IMAGE_URL" = "crowd.jpg";
TITLE = "GET 30% OFF";
}
)
Edit2
Actualy using the result of NSString * title =[tmp valueForKey:#"TITLE"]; I have to replace an element of NSMutableArray
And the code
NSMutableArray *array = [[NSMutableArray alloc]init];
[array addObject:#"Eezy"];
[array addObject:#"Tutorials"];
NSDictionary* tmp = [self getDBRequest:req];
NSString * title =[tmp valueForKey:#"TITLE"];
[array replaceObjectAtIndex:0 withObject:title];
Giving me the array modified some thing like below screen shot

Answer 1

Look at the first image in your question, the first line of the contents dump says "1 object".
Also look at the output of the NSLog, notice the parentheses (( & )) which surround the braces ({ & }), which in turn surround the key/value pairs.
Both these are telling you that tmp is not referencing an NSDictionary as you think, but an NSArray containing a single element and that element is an NSDictionary.
Now when you invoke valueForKey: on an array of dictionaries it does the key lookup on every dictionary in the collection and returns and array of results.
Which is why when you look at the second image in your question you see that its contents dump also starts with "1 object" - title is referencing an array containing one element, being your string.
This is also why, as mentioned in the comments, that using objectForKey: in place of valueForKey: causes an error - that method does not operate on arrays and so produces the unrecognized selector sent to instance error.
HTH

Answer 2

try like bellow code.
NSDictionary *tmp = #{#"DESCRIPTION" : #"30 OFF ON NEW",#"IMAGE_URL" : #"crowd.jpg",#"TITLE" : #"GET 30% OFF"};
//NSDictionary* tmp = [self getDBRequest:req];
NSArray *keyArray = [tmp allKeys];
NSString * title = [keyArray objectAtIndex:[keyArray indexOfObject:#"TITLE"]];//[keyArray objectAtIndex:0];
[array replaceObjectAtIndex:0 withObject:title];