How to get a value from a complicated dictionary? - swift

Question

An API returns this response below but I don't know how to parse it.
Response JSON
[
"results": [
[
"address": "mgG2W14th6TXYWXNDrZ24shsJ2wYhJm2b3",
"total": [
"balance": 0,
"received": 0,
"sent": 0
],
"confirmed": [
"balance": 0,
"received": 0,
"sent": 0
]
]
]
]
Swift Code
let appDelegate = UIApplication.sharedApplication().delegate as! AppDelegate
appDelegate.chain!.getAddress(address!) { dictionary, error in
NSLog("%#", dictionary)
}
Dictionary Object
(lldb) po dictionary
[results: (
{
address = mgG2W14th6TXYWXNDrZ24shsJ2wYhJm2b3;
confirmed = {
balance = 0;
received = 0;
sent = 0;
};
total = {
balance = 0;
received = 0;
sent = 0;
};
}
)]
I tried it many times... Can you share how to fix it please..
(lldb) po dictionary["results"]![0]
{
address = mgG2W14th6TXYWXNDrZ24shsJ2wYhJm2b3;
confirmed = {
balance = 0;
received = 0;
sent = 0;
};
total = {
balance = 0;
received = 0;
sent = 0;
};
}
po dictionary["results"]![0]!["address"]
error: <EXPR>:1:28: error: cannot subscript a value of type 'AnyObject' with an index of type 'String'
dictionary["results"]![0]!["address"]
I got "Could not find member 'subscript'" at "let address = ..." line.
let appDelegate = UIApplication.sharedApplication().delegate as! AppDelegate
appDelegate.chain!.getAddress(address!) { dictionary, error in
NSLog("%#", dictionary)
let address = dictionary["results"]![0]["address"]!
print("address: \(address)")
}

Answer 1

if let myDictionary = dictionary as? [String:AnyObject] {
if let results = myDictionary["results"] as? [AnyObject] {
if let firstItem = results[0] as? [String: AnyObject] {
if let address = firstItem["address"] as? String {
print(address)
}
if let total = firstItem["total"] as? [String:Int] {
if let balance = total["balance"] {
print(balance)
}
if let received = total["received"] {
print(received)
}
if let sent = total["sent"] {
print(sent)
}
}
if let confirmed = firstItem["confirmed"] as? [String:Int] {
if let balance = confirmed["balance"] {
print(balance)
}
if let received = confirmed["received"] {
print(received)
}
if let sent = confirmed["sent"] {
print(sent)
}
}
}
}
}
In order to simplify things you can create a class which will be managing such parsing if the data returned always has the same format.