import Foundation
struct Currency {
var gbp: Double
var eur: Double
var jpy: Double
var brl: Double
init(currencyDictionary: NSDictionary){
let currentRates: NSDictionary = currencyDictionary["rates"] as! NSDictionary
gbp = currentRates["GBP"] as! Double
eur = currentRates["EUR"] as! Double
jpy = currentRates["JPY"] as! Double
brl = currentRates["BRL"] as! Double
}
}
//
// ViewController.swift
// CurrrencyConverter
//
// Created by ME on 6/29/15.
// Copyright (c) 2015 The iOS Code. All rights reserved.
//
import UIKit
class ViewController: UIViewController {
@IBOutlet weak var userInputTextField: UITextField!
var finalResult: NSString!
@IBAction func convertButton(sender: AnyObject) {
disableKeyboard()
getCurrentCurrencyData()
}
@IBOutlet weak var resultTextView: UITextView!
override func viewDidLoad() {
super.viewDidLoad()
var noteText: String = "This application can convert any USD dollar amount to GBP, EUR, JPY and BRL currency! /n/n Please enter a dollar amount."
self.resultTextView.text = noteText
displayKeyboard()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func getCurrentCurrencyData() -> Void{
let currencyURL = NSURL(string: "http://api.fixer.io/latest?base=USD")
let sharedSession = NSURLSession.sharedSession()
let downloadTask: NSURLSessionDownloadTask = sharedSession.downloadTaskWithURL(currencyURL!, completionHandler: { (location: NSURL!, response:NSURLResponse!, error: NSError!) -> Void in
if(error == nil){
let dataObject = NSData(contentsOfURL: location)
let currencyDictionary: NSDictionary = NSJSONSerialization.JSONObjectWithData(dataObject!, options: nil, error: nil) as! NSDictionary
// println(currencyDictionary)
let rates = Currency(currencyDictionary: currencyDictionary)
dispatch_async(dispatch_get_main_queue(), { () -> Void in
var userInputStringValue: String = self.userInputTextField.text
var userInputDoubleValue : Double = NSString(string: userInputStringValue).doubleValue
// if(userInputDoubleValue = nil){
//
// }
if(userInputDoubleValue > 0){
var gbpCurrentValue = rates.gbp * userInputDoubleValue
var eurCurrentValue = rates.eur * userInputDoubleValue
var jpyCurrentValue = rates.jpy * userInputDoubleValue
var brlCurrentValue = rates.brl * userInputDoubleValue
var resultString = "UK Pounds - (GBP): " + gbpCurrentValue.description + "\n" +
"EU Euro - (Euro): " + eurCurrentValue.description + "\n" +
"Japan Yen - (JPY): " + jpyCurrentValue.description + "\n" +
"Brazil Reais - (BRL): " + brlCurrentValue.description as NSString
// println(resultString)
self.resultTextView.text = resultString as String
}
else{
self.resultTextView.text = "Please enter a valid dollar amount which is greater then 0"
}
// println(rates.gbp)
// println(rates.eur)
// println(rates.jpy)
// println(rates.brl)
// println(userINputDoubleValue)
})
}
else{
let networkIssueController = UIAlertController(title: "Error", message: "Unable to load data. Connectivity error!", preferredStyle: .Alert)
let okButton = UIAlertAction(title: "OK", style: .Default, handler: nil)
networkIssueController.addAction(okButton)
// let cancelButton = UIAlertAction(title: "Cancel", style: .Cancel, handler: nil)
// networkIssueController.addAction(cancelButton)
self.presentViewController(networkIssueController, animated: true, completion: { () -> Void in
//
})
dispatch_async(dispatch_get_main_queue(), { () -> Void in
self.resultTextView.text = "Unable to load data due to connectivity error! Please press the CONVERT button again get the conversion rates!"
})
println(error)
}
})
downloadTask.resume()
}
func displayKeyboard(){
self.userInputTextField .becomeFirstResponder()
}
func disableKeyboard(){
self.userInputTextField .resignFirstResponder()
}
override func touchesBegan(touches: Set<NSObject>, withEvent event: UIEvent) {
self.view .endEditing(true)
}
}
