parsing a nested Json in IOS - ios

Question

i just get started with Ios programming, and i have to parse a nested Json file and extract the items and lables, the problem is i have to display the list of the items on a tableview and refresh my tableview everytime i click on a row of my table view:
i did display the first list of my items but i'm trying to display my nested items and display them on my "new" tableview:
here are a simple of my JSON code and my objective-c code:
"results": {
"items": [
{
"id": "0100",
"label": "Actualités",
"cover": "http://XXXX_01.jpg",
"coverFrom": "XXX-03",
"coverTo": "2031-CCC18",
"coverOrder": 1,
"items": [
{
"id": "0101",
"label": "Actualité / Infos",
"cover": "http://XXXX.jpg",
"coverFrom": "2014XXX-24",
"coverTo": "2031-XXXX18",
"coverOrder": 1,
"items": [
]
},
and my RootViewContoller contain this code of the function connectionDidFinishiongLoading**
// we will follow the format of our nested JSON
NSDictionary *allDataDictionary = [NSJSONSerialization JSONObjectWithData:dataRequest options:0 error:nil];
NSDictionary *results = [allDataDictionary objectForKey:#"results"];
NSArray *arrayOfItems = [results objectForKey:#"items"];
for (NSDictionary *diction in arrayOfItems) {
//NSArray *ide = [diction objectForKey:#"id"];
NSString *label = [diction objectForKey:#"label"];
// add new object founded
[array addObject:label];
}
// reload my tableview
[[self tableView]reloadData];
// myParsingResults = [NSJSONSerialization JSONObjectWithData:dataRequest options:nil error:nil];
[[self tableView]reloadData];

Answer 1

If I understood correctly, try something like that:
NSDictionary *allDataDictionary = [NSJSONSerialization JSONObjectWithData:dataRequest options:0 error:nil];
NSDictionary *results = [allDataDictionary objectForKey:#"results"];
NSArray *array = [results objectForKey:#"items"];
NSMutableArray *arrayLabels = [[NSMutableArray alloc] init];
NSDictionnary *dicoTemp = [array objectAtIndex:0];
while([dicoTemp objectForKey:#"items"])
{
arrayLabels addObject:[[dicoTemp objectForKey:#"items"] objectForKey:#"label"];
NSArray *arrayTemp = [dicoTemp objectForKey:#"items"];
dicoTemp = [arrayTemp objectAtIndex:0]; //I don't know how you JSON ends, you may have to check if [arrayTemp count] > 0. I presumed that at the end, there was no object for key "items"
}
[[self tableView] reloadData];
That a weird nested JSON response, in my opinion.

Answer 2

Try this one...
NSError *error = nil;
NSURL *Url = [[NSURL alloc] initWithString:#"Your URL"];
jsonData = [NSData dataWithContentsOfURL:Url options:NSDataReadingUncached error:&error];
if(jsonData==Nil){
UIAlertView * alert=[[UIAlertView alloc]initWithTitle:#"Error" message:#"Please check your internet connection" delegate:self cancelButtonTitle:#"cancel" otherButtonTitles:#"ok", nil];
[alert show];
}
else{
NSDictionary *dataDictionary =[[NSDictionary alloc]init];
dataDictionary = [NSJSONSerialization JSONObjectWithData:jsonData options:NSJSONReadingMutableContainers error:&error];
[array addObject:[[[dataDictionary objectForKey:#"results"] valueForKey:#"items"] valueForKey:#"label"]];
}
and reloads your tableview.