Getting data from NSDictinionary [closed] - ios

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Closed 9 years ago.
I'm trying to get the "firstName" , "lastName" , "gender", "homeCity" and "email" from a NSDictionary
but It doesn't work...I have tried the following code:
NSDictionary *userInfo = [fsUser getUserInfo:#"self"];
NSLog(#"userInfo: %#", userInfo);
NSLog(#"name: %#", [userInfo objectForKey:#"firstName"]);
NSLog(#"lastName: %#", [userInfo objectForKey:#"lastName"]);
NSLog(#"gender: %#", [userInfo objectForKey:#"gender"]);
NSLog(#"homeCity: %#", [userInfo objectForKey:#"homeCity"]);
NSLog(#"email: %#", [userInfo objectForKey:#"email"]);
here is my dictionary value...
userInfo: {
userDictionary = {
meta = {
code = 200;
errorDetail = "Please provide an API version to avoid future errors.See http://bit.ly/vywCav";
errorType = deprecated;
};
notifications = (
{
item = {
unreadCount = 0;
};
type = notificationTray;
}
);
response = {
user = {
badges = {
count = 0;
items = (
);
};
bio = "";
checkinPings = off;
checkins = {
count = 0;
};
contact = {
email = "email#email.com";
};
firstName = Name;
following = {
count = 0;
};
friends = {
count = 0;
groups = (
{
count = 0;
items = (
);
name = "Amigos em comum";
type = friends;
},
{
count = 0;
items = (
);
name = "Outros amigos";
type = others;
}
);
};
gender = male;
homeCity = "";
id = 3233312;
lastName = lastName;
lists = {
groups = (
{
count = 1;
items = (
);
type = created;
}
);
};
mayorships = {
count = 0;
items = (
);
};
photo = "https://foursquare.com/img/blank_boy.png";
photos = {
count = 0;
items = (
);
};
pings = 0;
referralId = "u-sdsad";
relationship = self;
requests = {
count = 0;
};
scores = {
checkinsCount = 0;
goal = 50;
max = 0;
recent = 0;
};
tips = {
count = 0;
};
todos = {
count = 0;
};
type = user;
};
};
};
}

Answer 1

Use [userInfo objectForKey:#"userDictionary"] objectForKey:#"response"] objectForKey:#"user"] objectForKey:#"homeCity"].

Answer 2

This is where key-value coding (KVC) comes in handy. You can do (note use of valueForKey::
NSDictionary *userInfo = [fsUser getUserInfo:#"self"];
NSLog(#"userInfo: %#", userInfo);
NSLog(#"name: %#", [userInfo valueForKey:#"response.user.firstName"]);
NSLog(#"lastName: %#", [userInfo valueForKey:#"response.user.lastName"]);
NSLog(#"gender: %#", [userInfo valueForKey:#"response.user.gender"]);
NSLog(#"homeCity: %#", [userInfo valueForKey:#"response.user.homeCity"]);
NSLog(#"email: %#", [userInfo valueForKey:#"response.user.email"]);
But this isn't very efficient since you keep digging deep into the same dictionary. It would be better to do this:
NSDictionary *userInfo = [fsUser getUserInfo:#"self"];
NSDictionary *user = [userInfo valueForKey:#"response.user"];
NSLog(#"userInfo: %#", userInfo);
NSLog(#"name: %#", [user objectForKey:#"firstName"]);
NSLog(#"lastName: %#", [user objectForKey:#"lastName"]);
NSLog(#"gender: %#", [user objectForKey:#"gender"]);
NSLog(#"homeCity: %#", [user objectForKey:#"homeCity"]);
NSLog(#"email: %#", [user objectForKey:#"email"]);

Answer 3

It doesn't work because your userInfo doesn't have such keys.
userInfo has userDictionary, which has meta, notifications and response.
response has user, and user has firstName, lastName etc.

Answer 4

Your top leve is userInfo, but there are "objects" within that as well. You will have to traverse those to get to first name. Something like this will work:
NSLog(#"first name = %#", userInfo[#"userInfo"][#"userDictionary"][#"response"][#"user"][#"firstName"]);