Retrieve value from NSDictionnary - iphone

Question

I have a NSDictionary and I don't know how I can retrieve the value of "#mode" and "#route" (this is from a json response).
How I can do that?
Thanks!
This is the NSDictionary :
{
"#mode" = WALK;
"#route" = "Rue University";
distance = "17.513516908661757";
duration = 13000;
endTime = "2011-04-29T12:08:59.395-04:00";
from = {
geometry = "{\"type\": \"Point\", \"coordinates\": [-73.57120386807037,45.503820214186405]}";
lat = "45.503820214186405";
lon = "-73.57120386807037";
name = "Rue University";
};
legGeometry = {
length = 3;
points = "{mvtG`k``MOd#ME";
};
startTime = "2011-04-29T12:08:46.395-04:00";
steps = {
walkSteps = (
{
absoluteDirection = NORTHWEST;
becomes = false;
distance = "17.513516908661757";
elevation = "";
lat = "45.503820214186405";
lon = "-73.57120386807037";
stayOn = false;
streetName = "Rue University";
},
{
absoluteDirection = NORTH;
becomes = true;
distance = "0.0";
elevation = "";
lat = "45.50390573910769";
lon = "-73.57139257694809";
relativeDirection = RIGHT;
stayOn = false;
streetName = "street transit link";
}
);
};
to = {
geometry = "{\"type\": \"Point\", \"coordinates\": [-73.571363,45.503971]}";
lat = "45.503971";
lon = "-73.571363";
name = "Station McGill";
stopId = 32;
};

Answer 1

Looks like object at index 0 is a NSDictionary.
NSDictionary *dict = [array objectAtIndex:0];
NSString *route = [dict objectForKey:#"#route"];

Answer 2

Try this:
[myDictionary objectForKey:#"#mode"];

Answer 3

Given an NSDictionary dict, you can retrieve the value corresponding to the key #mode using:
[dict objectForKey:#"#mode"];

Answer 4

Two possibilities:
1) The NSMutableArray is an array of JSON formatted strings.
2) The NSMutableArray is an array of NSDictionaries.
If its #1, then you need to use the Cocoa JSON stuff to decode the JSON string into an NSDictionary:
NSDictionary* aDict = [[myArray objectAtIndex:0] JSONValue];
OR
NSDictionary* aDict = [theArray objectAtIndex:0];
The JSON stuff is available here http://code.google.com/p/json-framework/
Then this should work:
NSString* theMode = [aDict objectForKey:#"#mode"];
NSLog(#"the mode is %#, as read from the dictionary %#", theMode, aDict);
--Tom