How to print the json data - ios

Question

I'm trying to learn JSON with IOS since I'm a beginner in IOS devices, i tried this code so far
-(void)retriveData
{
NSURL *url = [NSURL URLWithString:#"http://localhost/testjson.php"];
NSData *data = [NSData dataWithContentsOfURL:url];
json = [NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:nil];
cities = [[NSMutableArray alloc] init];
for (int i=0; i<json.count; i++) {
NSString *cID = [[json objectAtIndex:i] objectForKey:#"id"];
NSString *cName = [[json objectAtIndex:i] objectForKey:#"CityName"];
NSString *cState = [[json objectAtIndex:i] objectForKey:#"CityState"];
NSString *cPopulation = [[json objectAtIndex:i] objectForKey:#"CityPopulation"];
NSString *cCountry = [[json objectAtIndex:i] objectForKey:#"Country"];
Country *myCity = [[Country alloc] initWithCityID:cID andCityName:cName andCityState:cState andCityPopulation:cPopulation andCityCountry:cCountry];
[cities addObject:myCity];
}
}
Anyone can show me now how i can print the data? this is the json file
[{"0":"1","id":"1","1":"Muscat","CityName":"Muscat","2":"Muscat","CityState":"Muscat","3":"25000","CityPopulation":"25000","4":"Oman","Country":"Oman"},{"0":"2","id":"2","1":"Bawsher","CityName":"Bawsher","2":"Muscat","CityState":"Muscat","3":"10000","CityPopulation":"10000","4":"Oman","Country":"Oman"},{"0":"3","id":"3","1":"AlMawalih","CityName":"AlMawalih","2":"Seeb","CityState":"Seeb","3":"5000","CityPopulation":"5000","4":"Oman","Country":"Oman"},{"0":"4","id":"4","1":"Oran","CityName":"Oran","2":"Oran","CityState":"Oran","3":"100000","CityPopulation":"100000","4":"Algeria","Country":"Algeria"},{"0":"5","id":"5","1":"Constantine","CityName":"Constantine","2":"Constantine","CityState":"Constantine","3":"150000","CityPopulation":"150000","4":"Algeria","Country":"Algeria"}]

Answer 1

Below is my very understandable and basic coding according to your question.It is helpful for you.
NSMutableURLRequest *request=[NSMutableURLRequest requestWithURL:[NSURL URLWithString:#"http://localhost/testjson.php"]];
[request setHTTPMethod:#"GET"];
[request setValue:#"application/json;charset=UTF-8" forHTTPHeaderField:#"content-type"];
NSError *err;
NSURLResponse *response;
NSData *responseData = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&err];
//You need to check response.Once you get the response copy that and paste in ONLINE JSON VIEWER in GOOGLE.If you do this clearly you can get the correct results.
//After that it depends upon the json format whether it is DICTIONARY or ARRAY
NSArray *jsonArray = [NSJSONSerialization JSONObjectWithData:responseData options: NSJSONReadingMutableContainers error: &err];
NSLog(#"The json output array is - %#",jsonArray);
for(int i=0;i>[jsonArray count];i++)
{
NSString *strZero = [NSString stringWithFormat:#"%#",[array objectAtIndex:i]valueForKey:#"0"]];
NSLog(#"The zero is-%#",strZero);
NSString *strOne = [NSString stringWithFormat:#"%#",[array objectAtIndex:i]valueForKey:#"1"]];
NSLog(#"The One is-%#",strOne);
NSString *strTwo = [NSString stringWithFormat:#"%#",[array objectAtIndex:i]valueForKey:#"2"]];
NSLog(#"The Two is-%#",strTwo);
NSString *strThree = [NSString stringWithFormat:#"%#",[array objectAtIndex:i]valueForKey:#"3"]];
NSLog(#"The three is-%#",strThree);
NSString *strFour = [NSString stringWithFormat:#"%#",[array objectAtIndex:i]valueForKey:#"4"]];
NSLog(#"The four is-%#",strFour);
NSString *strID = [NSString stringWithFormat:#"%#",[array objectAtIndex:i]valueForKey:#"id"]];
NSLog(#"The ID is-%#",strID);
NSString *strCityName = [NSString stringWithFormat:#"%#",[array objectAtIndex:i]valueForKey:#"CityName"]];
NSLog(#"The CityName is-%#",strCityName);
NSString *strCityState = [NSString stringWithFormat:#"%#",[array objectAtIndex:i]valueForKey:#"CityState"]];
NSLog(#"The CityState is-%#",strCityState);
NSString *strCityPopulation = [NSString stringWithFormat:#"%#",[array objectAtIndex:i]valueForKey:#"CityPopulation"]];
NSLog(#"The CityPopulation is-%#",strCityPopulation);
NSString *strCountry = [NSString stringWithFormat:#"%#",[array objectAtIndex:i]valueForKey:#"Country"]];
NSLog(#"The Country is-%#",strCountry);
}

Answer 2

By printing you mean show the data in the console ?
Did you try this ?
NSString* str = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
NSLog(#"Data: %#", str);