Get Row from NSArray - ios

Question

Hello i get a json that looks like this:
features: (
{
attributes = {
Gecontroleerd = Ja;
};
geometry = {
x = "5.968097965285907";
y = "52.50707112779077";
};
}
)
From this code:
NSDictionary *root = [NSJSONSerialization JSONObjectWithData:responseData options:0 error:nil];
NSArray *data = [root objectForKey:#"features"];
NSLog(#"features: %#", data );
for (NSArray *row in data) {
NSString *latitude = row[5];
NSString *longitude = row[7];
NSString *crimeDescription = #"test";
NSString *address = #"banaan";
And u need to x values 5.968097965285907 for latitude
and y values 52.50707112779077 for longitude
But i get this error:
[__NSCFDictionary objectAtIndexedSubscript:]: unrecognized selector sent to instance 0x14831450
2012-11-14 10:10:59.000 ArrestPlotter[6330:c07] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSCFDictionary objectAtIndexedSubscript:]: unrecognized selector sent to instance 0x14831450'
*** First throw call stack:
(0x1860012 0x1655e7e 0x18eb4bd 0x184fbbc 0x184f94e 0x2dbc 0x3b8f 0x1cc1e 0x16696b0 0xfa0035 0x17e3f3f 0x17e396f 0x1806734 0x1805f44 0x1805e1b 0x224a7e3 0x224a668 0x4a765c 0x25bd 0x24e5 0x1)
libc++abi.dylib: terminate called throwing an exception
(lldb)
Does anyone wich row i need to select?
I guess that the only thing is that the row number needs to be changed. Or maybe there should be something like this : [1][5]. Im not quite sure how this works

Answer 1

NSArray *data = [root objectForKey:#"features"];
NSLog(#"features: %#", data );
for (NSDictionary *dic in data) {
NSDictionary geometry = [dic objectForKey:#"geometry"];
// Do what you want..
NSString *myAwesomeX = [geometry objectForKey:#"x"];
NSString *myAwesomeY = [geometry objectForKey:#"y"];
}

Answer 2

The problem here is that you are trying to send a selector message to object row, that is in memory a NSDictionary (NSCFDictionary?) object, and you are trying to manage it like a NSArray.
The method objectAtIndexedSubscript (is underlying called by row[5] and row[7]) exists in NSDictionary, but no in NSArray.
Change
for (NSArray *row in data) {
by
for (NSDictionary *row in data) {
Also, you have to change the management of data inside for, look at the result of your log statement and act accord whit it.
I hope this will help!