Question

My JSON response is like this:

{
   "results" : [
      {
         "address_components" : [
            {
               "long_name" : "285",
               "short_name" : "285",
               "types" : [ "street_number" ]
            },
            {
               "long_name" : "Bedford Ave",
               "short_name" : "Bedford Ave",
               "types" : [ "route" ]
            },
            {
               "long_name" : "Williamsburg",
               "short_name" : "Williamsburg",
               "types" : [ "neighborhood", "political" ]
            },
            {
               "long_name" : "Brooklyn",
               "short_name" : "Brooklyn",
               "types" : [ "sublocality", "political" ]
            },

I need to get the last value for the Key long_name:

{
                   "long_name" : "Brooklyn",//i need to get this "Brooklyn"
                   "short_name" : "Brooklyn",
                   "types" : [ "sublocality", "political" ]
                },

How can i get that although there is a lot of Values with the same key long_name:

NSArray *resultsArray = [responseDict objectForKey:@"results"];//what to do next?

Answer 1

[[[[[resultsArray objectAtIndex:0] valueForKey:@"address_components"] valueForKey:@"long_name"] lastObject];

Breaking down:

// get array of address components
[[resultsArray objectAtIndex:0] valueForKey:@"address_components"]

// calling this on array will get you long_name values from ALL elements
...] valueForKey:@"long_name"]

// finally grab the last element long_name array
...] lastObject];

Equivalent would be:

[[[[resultsArray objectAtIndex:0] valueForKey:@"address_components"] lastObject] valueForKey:@"long_name"];

Breaking down:

// get array of address components
[[resultsArray objectAtIndex:0] valueForKey:@"address_components"]

// get last dictionary
...] lastObject]

// get long_name from last dictionary
...] valueForKey:@"long_name"]