I have a JSON string (from PHP's json_encode()
that looks like this:
[{"id": "1", "name":"Aaa"}, {"id": "2", "name":"Bbb"}]
I want to parse this into some sort of data structure for my iPhone app. I guess the best thing for me would be to have an array of dictionaries, so the 0th element in the array is a dictionary with keys "id" => "1"
and "name" => "Aaa"
.
I do not understand how the NSJSONSerialization
stores the data though. Here is my code so far:
NSError *e = nil;
NSDictionary *JSON = [NSJSONSerialization
JSONObjectWithData: data
options: NSJSONReadingMutableContainers
error: &e];
This is just something I saw as an example on another website. I have been trying to get a read on the JSON
object by printing out the number of elements and things like that, but I am always getting EXC_BAD_ACCESS
.
How do I use NSJSONSerialization
to parse the JSON above, and turn it into the data structure I mentioned?
Your root json object is not a dictionary but an array:
[{"id": "1", "name":"Aaa"}, {"id": "2", "name":"Bbb"}]
This might give you a clear picture of how to handle it:
NSError *e = nil;
NSArray *jsonArray = [NSJSONSerialization JSONObjectWithData: data options: NSJSONReadingMutableContainers error: &e];
if (!jsonArray) {
NSLog(@"Error parsing JSON: %@", e);
} else {
for(NSDictionary *item in jsonArray) {
NSLog(@"Item: %@", item);
}
}