Retrieve nested objects from JSON - Objective C - objective-c

Question

I seem to be having a small issue with the parsing through a nested JSON result. The following code works perfectly if the JSON is not nested. I'm a littler perplexed on how to proceed as every attempted (through examples of others) have failed.
So, to test this I'm using the following API from https://developer.worldweatheronline.com/page/explorer-free
I simply would like to get my current temperature (temp_c).
Below is the code calling the service. Note that I have an NSObject that will fill the data, but of course I can't seem to get to that stage. Also it is an NSMutableArray throughout. Again, I don't think that is the issue but provides context.
-(void)retrieveLocalWeatherService {
NSURL *url = [NSURL URLWithString:getLocalWeather];
NSData *data = [NSData dataWithContentsOfURL:url];
jsonArray = [NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:nil];
//set up array and json call
weatherArray = [[NSMutableArray alloc]init];
//Loop through the JSON array
for (int i = 0; i< jsonArray.count; i++)
{
//create our object
NSString *nTemp = [[jsonArray objectAtIndex:i]objectForKey:#"temp_C"];
NSString *nPressure = [[jsonArray objectAtIndex:i]objectForKey:#"pressure"];
NSString *nHumidity = [[jsonArray objectAtIndex:i]objectForKey:#"humidity"];
//Add the object to our animal array
[weatherArray addObject:[[LocalWeather alloc]initWithtemp:(nTemp) andpressure:nPressure andhumidity:nHumidity]];
}
Here is the JSON response.
{
"data": {
"current_condition": [
{
"cloudcover": "75",
"FeelsLikeC": "31",
"FeelsLikeF": "88",
"humidity": "70",
"observation_time": "05:15 AM",
"precipMM": "0.0",
"pressure": "1011",
"temp_C": "28",
"temp_F": "82",
"visibility": "10",
"weatherCode": "116",
"weatherDesc": [
{
"value": "Partly Cloudy"
}
],
"weatherIconUrl": [
{
"value": "http://cdn.worldweatheronline.net/images/wsymbols01_png_64/wsymbol_0002_sunny_intervals.png"
}
],
"winddir16Point": "N",
"winddirDegree": "10",
"windspeedKmph": "41",
"windspeedMiles": "26"
}
],
"request": [
{
"query": "Brisbane, Australia",
"type": "City"
}
],
I cut off the JSON service as it goes for miles, so where am I going wrong? I believe its somewhere within "for-loop" but am unsure where. I know its major node is "data" and then sub-node is "current_condition". Should I be digging through the JSON results? If what is the best approach.
BTW, I'm getting a response from the server with the entire JSON result..clearly a parsing issue on my part.
Thanks in advance!
please be kind i'm a newbie.

Answer 1

You are parsing your JSON data in wrong way, you are parsing JSON directly to Array but as per your JSON format your JSON will return an NSDictionary not NSArray.
-(void)retrieveLocalWeatherService {
NSURL *url = [NSURL URLWithString:getLocalWeather];
NSData *data = [NSData dataWithContentsOfURL:url];
NSDictionary *weatherJson = [NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:nil];
NSArray *currentConditionArray = [weatherJson valueForKeyPath:#"Data.current_condition"];
//set up array and json call
weatherArray = [[NSMutableArray alloc]init];
//Loop through the JSON array
for (NSDictionary *item in currentConditionArray)
{
//create our object
NSString *nTemp = [item objectForKey:#"temp_C"];
NSString *nPressure = [item objectForKey:#"pressure"];
NSString *nHumidity = [item objectForKey:#"humidity"];
//Add the object to our animal array
[weatherArray addObject:[[LocalWeather alloc]initWithtemp:(nTemp) andpressure:nPressure andhumidity:nHumidity]];
}
}