Question

Im getting a JSON response to my app [Twitter web service], is a string, but for example the object at index 0 is:

es array en:0, tiene {
contributors = "<null>";
coordinates = "<null>";
"created_at" = "Thu Aug 04 23:26:05 +0000 2011";
favorited = 0;
geo = "<null>";
id = 99259843982016513;
"id_str" = 99259843982016513;
"in_reply_to_screen_name" = "<null>";
"in_reply_to_status_id" = "<null>";
"in_reply_to_status_id_str" = "<null>";
"in_reply_to_user_id" = "<null>";
"in_reply_to_user_id_str" = "<null>";
place = "<null>";
"possibly_sensitive" = 0;
"retweet_count" = 0;
retweeted = 0;
source = "<a href=\"http://twitter.com/tweetbutton\" rel=\"nofollow\">Tweet Button</a>";
text = "Stack Exchange Q&A site proposal: Freelance Workers http://t.co/yaW1RHp";
truncated = 0;
user =     {
    "contributors_enabled" = 0;
    "created_at" = "Mon Jul 13 19:39:31 +0000 2009";
    "default_profile" = 0;
    "default_profile_image" = 0;
    description = "My goal is to enable the brain computer interfaces to use the possibilities of mobile platforms for robotics and physical computing";
    "favourites_count" = 0;
    "follow_request_sent" = "<null>";
    "followers_count" = 92; ...

so there are like 17 objects for my array [for each twitt], so how can I decompose those objects into further arrays or a dictionary?

I specifaclly want the text key

text = "Apple vs Samsung tablets [haha and Samsung is an Apple hardware provider!!]\nhttp://t.co/rvv43Hy";

thanks a lot

Answer 1

There may already be a parser built for this, but if not I think you’ll find the following method useful.

NSArray *strings = [input componentsSeparatedByString:@";"];

It returns an array of strings with (in this case) “;” as a delimiter.

{contributors = “” , coordinates = “”, …}

You can them separate them further:

NSDictionary *dict = [NSDictionary dictionary];
for (NSString *s in strings)
{
    NSArray *keyValue = [s componentsSeparatedByString:@"="];
    NSString *key = [keyValue objectAtIndex:0];
    NSString *value = [keyValue objectAtIndex:1];
    [dict setValue:value forKey:key];
}

There does seem to be some extra data at the start of the response, you might have to strip this off first.