Parsing JSON using a Swift Dictionary - ios

Question

I am having a hard time parsing JSON with Swift. I have written a function that make a get request to an api and retrieves the data as JSON and converts it into a dictionary. After that I am trying to use a tableViewController to set each title and subtitle from the values I received from the JSON. I am trying to set the title as the homeTeam and the subtitle as the awayTeam. I do not know much about Swift so I was hoping for some help.
Here is my JSON that is stored in a dictionary:
dictionary = ["scoreboard": {
gameScore = (
{
game = {
ID = 35119;
awayTeam = {
Abbreviation = ATL;
City = Atlanta;
ID = 91;
Name = Hawks;
};
date = "2017-04-07";
homeTeam = {
Abbreviation = CLE;
City = Cleveland;
ID = 86;
Name = Cavaliers;
};
location = "Quicken Loans Arena";
time = "7:30PM";
};
isCompleted = false;
isInProgress = false;
isUnplayed = true;
quarterSummary = "<null>";
},
{
game = {
ID = 35120;
awayTeam = {
Abbreviation = MIA;
City = Miami;
ID = 92;
Name = Heat;
};
date = "2017-04-07";
homeTeam = {
Abbreviation = TOR;
City = Toronto;
ID = 81;
Name = Raptors;
};
location = "Air Canada Centre";
time = "7:30PM";
};
isCompleted = false;
isInProgress = false;
isUnplayed = true;
quarterSummary = "<null>";
},
{
game = {
ID = 35121;
awayTeam = {
Abbreviation = NYK;
City = "New York";
ID = 83;
Name = Knicks;
};
date = "2017-04-07";
homeTeam = {
Abbreviation = MEM;
City = Memphis;
ID = 107;
Name = Grizzlies;
};
location = "FedEx Forum";
time = "8:00PM";
};
isCompleted = false;
isInProgress = false;
isUnplayed = true;
quarterSummary = "<null>";
},
{
game = {
ID = 35122;
awayTeam = {
Abbreviation = DET;
City = Detroit;
ID = 88;
Name = Pistons;
};
date = "2017-04-07";
homeTeam = {
Abbreviation = HOU;
City = Houston;
ID = 109;
Name = Rockets;
};
location = "Toyota Center";
time = "8:00PM";
};
isCompleted = false;
isInProgress = false;
isUnplayed = true;
quarterSummary = "<null>";
},
{
game = {
ID = 35123;
awayTeam = {
Abbreviation = SAS;
City = "San Antonio";
ID = 106;
Name = Spurs;
};
date = "2017-04-07";
homeTeam = {
Abbreviation = DAL;
City = Dallas;
ID = 108;
Name = Mavericks;
};
location = "American Airlines Center";
time = "8:30PM";
};
isCompleted = false;
isInProgress = false;
isUnplayed = true;
quarterSummary = "<null>";
},
{
game = {
ID = 35124;
awayTeam = {
Abbreviation = NOP;
City = "New Orleans";
ID = 110;
Name = Pelicans;
};
date = "2017-04-07";
homeTeam = {
Abbreviation = DEN;
City = Denver;
ID = 99;
Name = Nuggets;
};
location = "Pepsi Center";
time = "9:00PM";
};
isCompleted = false;
isInProgress = false;
isUnplayed = true;
quarterSummary = "<null>";
},
{
game = {
ID = 35125;
awayTeam = {
Abbreviation = MIN;
City = Minnesota;
ID = 100;
Name = Timberwolves;
};
date = "2017-04-07";
homeTeam = {
Abbreviation = UTA;
City = Utah;
ID = 98;
Name = Jazz;
};
location = "Vivint Smart Home Arena";
time = "9:00PM";
};
isCompleted = false;
isInProgress = false;
isUnplayed = true;
quarterSummary = "<null>";
},
{
game = {
ID = 35126;
awayTeam = {
Abbreviation = OKL;
City = "Oklahoma City";
ID = 96;
Name = Thunder;
};
date = "2017-04-07";
homeTeam = {
Abbreviation = PHX;
City = Phoenix;
ID = 104;
Name = Suns;
};
location = "Talking Stick Resort Arena";
time = "10:00PM";
};
isCompleted = false;
isInProgress = false;
isUnplayed = true;
quarterSummary = "<null>";
},
{
game = {
ID = 35127;
awayTeam = {
Abbreviation = SAC;
City = Sacramento;
ID = 103;
Name = Kings;
};
date = "2017-04-07";
homeTeam = {
Abbreviation = LAL;
City = "Los Angeles";
ID = 105;
Name = Lakers;
};
location = "Staples Center";
time = "10:30PM";
};
isCompleted = false;
isInProgress = false;
isUnplayed = true;
quarterSummary = "<null>";
}
);
lastUpdatedOn = "<null>";
}]
Here is what I have currently for setting my title and subtitle in Swift:
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "NBAScore", for: indexPath)
// Configure the cell...
if let scoreBoard = d.dictionary["scoreboard"] as? [String:AnyObject]
{
if let gameScore = scoreBoard["gameScore"] as? [String:AnyObject]
{
if let game = gameScore["game"] as? [String:AnyObject]
{
if let awayTeam = game["awayTeam"] as? String
{
cell.textLabel?.text = awayTeam }
}
}
}
return cell
}

Answer 1

Best will be to create a Struct add variable's for the properties you need after that make an array from that struct parse your array of json using a for loop and append them to the newly array you have created then you can access those properties using dot notation inside your cellForRow function

Answer 2

Use the below code to get the team name -
if let scoreBoard = d.dictionary["scoreboard"] as? [String:AnyObject]
{
if let gameScore = scoreBoard["gameScore"] as? [String:AnyObject]
{
if let game = gameScore["game"] as? [String:AnyObject]
{
if let awayTeam = game["awayTeam"] as? [String: AnyObject] {
if let teamName = awayTeam["Name"] as? String {
cell.textLabel?.text = teamName
}
}
}
}
}

Answer 3

For that purpose I would use some library that was build to parse JSON dictionaries to some model objects as it's a good practice. E.g. I would recommend Marshal as it's lightweight and easy to use.
You just create a struct or any other Swift structure and then you call Marshal. Later on you use those mapped objects in your tableView dataSource.

Answer 4

Your 'gameScore' object is an array not a dictionary type ([String:AnyObject]). My mistake that i didn't check the json object properly.
First create an array and store all the team name in that array. For Example, I am storing all the awayteam name for now in an array. Check the below code. I didn't run the below source code in my end, Since your json has problem. It's not a valid json data. There is formatting issue. But this below code will work.
let awayTeamArr = NSMutableArray()
if let scoreBoard = d.dictionary["scoreboard"] as? [String:AnyObject] {
if let gameScore = scoreBoard["gameScore"] as? NSArray {
for gameScoreObj in gameScore {
if let gameObj = gameScoreObj as [String: AnyObject] {
if let game = gameObj["game"] as? [String:AnyObject] {
if let awayTeam = game["awayTeam"] as? [String: AnyObject] {
if let teamName = awayTeam["Name"] as? String {
awayTeam.add(teamName)
}
}
}
}
}
}
}
Then in your tableView delegate method for each cell display the object of that specific index of 'awayTeamArr' object. If this answer worked then make the question as completed.

Answer 5

I was able to figure out an answer to my own question. The "gameScore" key of the dictionary was giving me trouble because I was type casting it incorrectly. It was an Array<[String:Any]> not a dictionary.
func parseJSON(){
var s = nbaScore()
var i = 0
if let scoreBoard = d.dictionary["scoreboard"] as? [String:AnyObject]
{
// Could check the lastUpdattedOn date before doing the following:
if let gameScore = scoreBoard["gameScore"] as? Array<[String:Any]>
{ //Loop for # of games
//while gameScore[i]["game"] as? [String:Any] != nil
while i < gameScore.count
//for _ in (gameScore[0]["game"] as? [String:Any])!
{
// An array of dictionaries
if let game = gameScore[i]["game"] as? [String:Any]
{
s.gameTime = (game["time"] as? String)!
if let awayTeam = game["awayTeam"] as? [String:Any]
{
s.awayTeamCity = (awayTeam["City"] as? String)!
s.awayTeamName = (awayTeam["Name"] as? String)!
}
if let homeTeam = game["homeTeam"] as? [String:Any]
{
s.homeTeamCity = (homeTeam["City"] as? String)!
s.homeTeamName = (homeTeam["Name"] as? String)!
}
}
if let isUnplayed = gameScore[i]["isUnplayed"] as? String
{
s.isUnplayed = isUnplayed
}
if let isInProgress = gameScore[i]["isInProgress"] as? String
{
s.isInProgress = isInProgress
}
if let isCompleted = gameScore[i]["isCompleted"] as? String
{
s.isCompleted = isCompleted
}
if let awayScore = gameScore[i]["awayScore"] as? String
{
s.awayTeamScore = awayScore
}
if let homeScore = gameScore[i]["homeScore"] as? String
{
s.homeTeamScore = homeScore
}
i += 1
scores.append(s)
s.clearData()
gamesCount += 1
}
}
}
}