How do I gather JSON data nested in an array using NSDictionary

Question

I have the following JSON:

{
0: 200,
error: false,
campaigns: {
current_campaigns: [
                {
                id: \"1150\",
                campaign         


        

Answer 1

The easiest thing to remember about JSON is that every time you see a bracket "[", that means the beginning of an Array and "]" is the end. Every time you see a curly brace "{" that means the beginning of a Dictionary and "}" is the end.

So in your example, campaigns is a Dictionary element with another Dictionary (current_campaigns) that contains an Array of Dictionaries. Each of those Dictionaries has a key called title.

So the long version (untested):

NSDictionary *campaigns = [dataDictionary objectForKey:@"campaigns"];
NSArray *currentCampaigns = [campaigns objectForKey:@"current_campaigns"];
for (NSDictionary *thisCampaign in currentCampaigns) {
    NSLog(@"title: %@", [thisCampaign objectForKey:@"title"]);
}