Getting error when parsing JSON iOS - ios

Question

After get string from web service, i need to parse them. But something is going wrong.
Here is my code;
NSString *responseString = [request responseString];
NSLog(#"response String = %#",responseString);
NSData *tempData = [responseString dataUsingEncoding:NSUTF8StringEncoding];
NSError *error = nil;
NSString *innerJson = [NSJSONSerialization JSONObjectWithData:tempData
options:NSJSONReadingAllowFragments error:&error];
NSLog(#"innerJson = %#",innerJson);
NSArray *entries = [NSJSONSerialization JSONObjectWithData:[innerJson dataUsingEncoding:NSUTF8StringEncoding]
options:0 error:&error];
NSLog(#"entries = %#",entries);
for (NSDictionary *entry in entries) {
NSLog(#"entry = %#",entry);
NSString *message = [entry objectForKey:#"message"];
NSLog(#"message = %#",message );
NSString* result = [entry objectForKey:#"result"];
NSLog(#"result = %#", result);
}
Here is my output;
innerJson = {"result": false,"message":"message!"}//I need parse this string.
entries = {
message = "message!";
result = 0;
}
entry = message
I am taking error in for loop.
What am i doing wrong?
Thanks for interest and advice.

Answer 1

The problem is that in the line
NSArray *entries = [NSJSONSerialization
you assign the result to NSArray, and your JSON object is a dictionary, so you should assign to NSDictionary. Then the for loop is unnecessary - you can do:
NSDictionary *entries = [NSJSONSerialization JSONObjectWithData:[innerJson dataUsingEncoding:NSUTF8StringEncoding] options:0 error:&error];
NSLog(#"entries = %#",entries);
NSString *message = [entries objectForKey:#"message"];
NSLog(#"message = %#",message );
NSString* result = [entries objectForKey:#"result"];
NSLog(#"result = %#", result);
Read more details in NSJSONSerialization documentation.

Answer 2

I'm not sure - but I guess this code should work for you:
NSString *responseString = [request responseString];
NSLog(#"response String = %#",responseString);
NSData *tempData = [responseString dataUsingEncoding:NSUTF8StringEncoding];
NSError *error = nil;
/* assuming it is a dictionary */
NSDictionary *inner = [NSJSONSerialization JSONObjectWithData:tempData
options:NSJSONReadingAllowFragments error:&error];
NSLog(#"inner = %#",inner);
for(id key in inner) {
id value = [inner objectForKey:key];
NSLog(#"key=%#, value=%#", key, value);
}