How to fetch NSString from a JSON array of dictionaries? - ios

Question

This is my JSON:
-elements: [
{
HomeworkElementSession: {
id: "608743",
name: "Interval for x",
description: "",
}
}
]
...
I was able to get to the point where I have an actual NSArray representing the "elements" node and therefore containing only one object in the array.
But I have no idea how to reach this string "name".
What i did was:
NSMutableArray *elements = [singleHomework objectForKey:#"elements"];
for(int i=0; i<elements.count; i++){
NSDictionary* homeworkSession = [elements objectAtIndex:i];
NSString* name = [homeworkSession objectForKey:#"name"];
NSLog(#"%#",name);
}
But i get nil in Log.
What am I doing wrong ?

Answer 1

NSMutableArray *elements = [singleHomework objectForKey:#"elements"];
for(int i=0; i<elements.count; i++){
NSDictionary* homeworkSession = [elements objectAtIndex:i];
NSDictionary* dataDict = [homeworkSession objectForKey:#"HomeworkElementSession"];
NSString* name = [dataDict objectForKey:#"name"];
NSLog(#"%#",name);
}

Answer 2

You need to get the Dictionary for key HomeworkElementSession first
NSMutableArray *elements = [singleHomework objectForKey:#"elements"];
for(int i=0; i<elements.count; i++){
NSDictionary* mainhomeworkSession = [elements objectAtIndex:i];
NSDictionary* homeworkSession = [mainhomeworkSession objectForKey:#"HomeworkElementSession"];
NSString* name = [homeworkSession objectForKey:#"name"];
NSLog(#"%#",name);
}
Hope it helps you..!

Answer 3

NSMutableArray *elements = [singleHomework objectForKey:#"elements"];
for(NSDictionary *dict in elements){
NSDictionary* dataDict = [dict objectForKey:#"HomeworkElementSession"];
NSString* name = [dataDict objectForKey:#"name"];
NSLog(#"%#",name);
}

Answer 4

Try this may be help full ,
Note: you are getting output in NSString so use this
NSString *singleHomework = #"your data";
NSMutableDictionary *dataDic = [NSJSONSerialization JSONObjectWithData:[singleHomework dataUsingEncoding:NSUTF8StringEncoding] options:NSJSONReadingMutableContainers error:Nil];
NSMutableArray *dataArray = [dataDic valueForKey:#"elements"];
NSLog(#"Name Print %#",[dataArray[0] valueForKey:#"name"]);

Answer 5

First, I'm not sure why you have a hyphen in the dictionary key "-elements". That could be a problem. However, your main problem is that your JSON is an array containing a single dictionary which then contains a dictionary (HomeworkElementSession) which has attributes.
NSString * json = #"{\"elements\": [{\"HomeworkElementSession\": {\"id\": \"608743\", \"name\":\"Interval for x\", \"description\": \"\"}}]}";
NSData * jsonData = [json dataUsingEncoding:NSUTF8StringEncoding];
NSError *e;
NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:jsonData options:NSJSONReadingAllowFragments error:&e];
NSLog(#"dict=%#", dict);