Wrong value in correct json using Swift - ios

Question

I'm facing this strange problem. I have to parse this json and extract "symbol","High","low" and "direction". this is the original json
[{"ID":101,"Symbol":"PKR","Bid":105.7,"Ask":106,"High":105.7,"Low":106,"Change":0,"Direction":"0","CreateDate":"04:38:26","EntityState":2,
"EntityKey":{"EntitySetName":"v_openmarketrates","EntityContainerName":"tradebizEntities",
"EntityKeyValues":[{"Key":"ID","Value":101}],
"IsTemporary":false}},
{"ID":1,"Symbol":"EUR","Bid":126.696,"Ask":127.327,"High":126.7622,"Low":126.9752,"Change":0.4192,"Direction":"0","CreateDate":"06:37:31","EntityState":2,
"EntityKey":{"EntitySetName":"v_openmarketrates","EntityContainerName":"tradebizEntities","EntityKeyValues":[{"Key":"ID","Value":1}],
"IsTemporary":false}}]
When i'm parsing this in json, it is fetching all the values correctly except the value of "Direction",like this:
[{
Ask = 106;
Bid = "105.7";
Change = 0;
CreateDate = "04:38:26";
Direction = 0;
EntityKey = {
EntityContainerName = tradebizEntities;
EntityKeyValues = (
{
Key = ID;
Value = 101;
}
);
EntitySetName = "v_openmarketrates";
IsTemporary = 0;
};
EntityState = 2;
High = "105.7";
ID = 101;
Low = 106;
Symbol = PKR;
},
{
Ask = "127.265";
Bid = "126.623";
Change = "0.3463";
CreateDate = "06:30:46";
Direction = 0;
EntityKey = {
EntityContainerName = tradebizEntities;
EntityKeyValues = (
{
Key = ID;
Value = 1;
}
);
EntitySetName = "v_openmarketrates";
IsTemporary = 0;
};
EntityState = 2;
High = "126.7306";
ID = 1;
Low = "126.9752";
Symbol = EUR;
}
i have no idea how the value inside json is getting changed while parsing even though rest of the values are correct. this is how i'm parsing it.
if let jsonResult = try JSONSerialization.jsonObject(with: data!, options: []) as? [NSDictionary] {
print("kerb rates full json = ",jsonResult )
for field in jsonResult as? [AnyObject] ?? [] {
print("fields of kerb rates = \(field)")
print("kerb directions \((field["Direction"] as? String)!)")
let subfield : AnyObject = (field["EntityKey"] as? AnyObject)!
let sub_subfield : AnyObject = (subfield["EntityKeyValues"] as? AnyObject)!
print("sub_subfield = \(sub_subfield)")
print("subfields = \(subfield)")
// for key_Subfield in sub_subfield as? [AnyObject] ?? [] {
print("inside loop!")
// converting int and bool values
let ask = (field["Ask"] as? Int)!
let bid = (field["Bid"] as? Int)!
let change = (field["Change"] as? Int)!
let EntityState = (field["EntityState"] as? Int)!
let High = (field["High"] as? Double)!
let ID = (field["ID"] as? Int)!
let IsTemporary = ""//(subfield["IsTemporary"] as? Bool)!
let Low = (field["Low"] as? Double)!
let Value = ""//(key_Subfield["Value"] as? Int)!
// it is crashing here due to multple dictionaries
self.Save_KerbRates(ask: (String(ask)),
bid: (String(bid)),
change: (String(change)),
createDate: (field["CreateDate"] as? String)!,
direction: (field["Direction"] as? String)!,
entityContainerName: "",//(subfield["EntityContainerName"] as? String)!,
entitiySetName:"",// (subfield["EntitySetName"] as? String)!,
entitiyState: (String(EntityState)),
high: (String(High)),
id: (String(ID)),
isTemporary: (String(IsTemporary)),
key:"",// (key_Subfield["Key"] as? String)!,
low: (String(Low)),
symbol: (field["Symbol"] as? String)!,
value: (String(Value)))
// }
}
Update:
After using [[String:Any]]
i'm still getting the wrong value of direction,like this
kerb rates full json = [["Low": 106, "Direction": 0, "EntityState": 2, "EntityKey": {
EntityContainerName = tradebizEntities;
EntityKeyValues = (
{
Key = ID;
Value = 101;
}
);
EntitySetName = "v_openmarketrates";
IsTemporary = 0;
}, "ID": 101, "CreateDate": 04:38:26, "Symbol": PKR, "Change": 0, "Ask": 106, "High": 105.7, "Bid": 105.7], ["Low": 126.9752, "Direction": -1, "EntityState": 2, "EntityKey": {
EntityContainerName = tradebizEntities;
EntityKeyValues = (
{
Key = ID;
Value = 1;
}
);
EntitySetName = "v_openmarketrates";
IsTemporary = 0;
}, "ID": 1, "CreateDate": 07:03:46, "Symbol": EUR, "Change": 0.4403, "Ask": 127.349, "High": 126.7654, "Bid": 126.717],

Answer 1

This parses (and prints) all values in the first level of the dictionary and the value for keys IsTemporary and Value in the second level. All variable names start with a lowercase letter to conform to the naming convention.
The code uses a type alias for convenience.
Be aware that the code does not use any error handling to check the dictionary keys. If it is not guaranteed that all items contain all keys and values you have to use optional bindings.
typealias JSONDictionary = [String:Any]
do {
if let jsonResult = try JSONSerialization.jsonObject(with:data!) as? [JSONDictionary] {
for field in jsonResult {
let ask = field["Ask"] as! Double
let bid = field["Bid"] as! Double
let change = field["Change"] as! Double
let createDate = field["CreateDate"] as! String
let direction = field["Direction"] as! String
let entityState = field["EntityState"] as! Int
let high = field["High"] as! Double
let id = field["ID"] as! Int
let low = field["Low"] as! Double
let symbol = field["Symbol"] as! String
let entityKey = field["EntityKey"] as! JSONDictionary
let isTemporary = entityKey["IsTemporary"] as! Bool
let entityKeyValues = entityKey["EntityKeyValues"] as! [JSONDictionary]
let value = entityKeyValues[0]["Value"] as! Int
print(ask, bid, change, createDate, direction, entityState, high, id, low, symbol, isTemporary, value)
}
}
} catch {
print(error)
}