Hi, this is another basic app, that seems to be a must for every beginner.
Again we are implementing the use of a slider and some basic math operations.
Also this will help you understand how to put everything you need to reuse in a function.
It makes things much more easy to use, later change and presentable.
Here is the code:
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// // ViewController.swift // TipCalclator2 // // Created by Razvigor Andreev on 10/12/14. // Copyright (c) 2014 Razvigor Andreev. All rights reserved. // import UIKit class ViewController: UIViewController { // Labels @IBOutlet weak var billAmountLabel: UILabel! @IBOutlet weak var tipLabel: UILabel! @IBOutlet weak var totalPlusTipLabel: UILabel! @IBOutlet weak var tipPerPersonLabel: UILabel! @IBOutlet weak var totalPerPersonLabel: UILabel! // Outputs @IBOutlet weak var tipPercentageLabel: UILabel! @IBOutlet weak var personsLabel: UILabel! @IBOutlet weak var tipOutlet: UITextField! @IBOutlet weak var total: UITextField! @IBOutlet weak var tipPerPerson: UITextField! @IBOutlet weak var totalPerPerson: UITextField! // Input @IBOutlet weak var billAmountField: UITextField! // variables var amountDouble = Double(50) var sliderValue = 18 var tipPerc = 0.18 var tip = Double(9) var myTip = Double(9) var persons = Int(1) // Sliders @IBOutlet weak var tipSlider: UISlider! @IBOutlet weak var personsSlider: UISlider! override func viewDidLoad() { super.viewDidLoad() // Do any additional setup after loading the view, typically from a nib. } override func didReceiveMemoryWarning() { super.didReceiveMemoryWarning() // Dispose of any resources that can be recreated. } @IBAction func tipSliderChanged(sender: UISlider) { println("tip adjusted") sliderValue = Int(sender.value) tipPerc = Double(sliderValue) * 0.01 refresh() } @IBAction func personsSlider(sender: UISlider) { println("person adjusted") persons = Int(sender.value) personsLabel.text = "(persons)" refresh() } func refresh () { println("refresh requested") let pctFormatter = NSNumberFormatter() pctFormatter.numberStyle = NSNumberFormatterStyle.CurrencyStyle amountDouble = (billAmountField.text as NSString).doubleValue tip = amountDouble * tipPerc tipPercentageLabel.text = "(Int(sliderValue)) %" tipOutlet.text = pctFormatter.stringFromNumber(tip) var result = Double(amountDouble)+Double(tip) total.text = pctFormatter.stringFromNumber(result) var personsDouble = Double(persons) tipPerPerson.text = pctFormatter.stringFromNumber(tip/personsDouble) myTip = Double(tip/personsDouble) totalPerPerson.text = pctFormatter.stringFromNumber(result / personsDouble) } @IBAction func billAmountChanged(sender: AnyObject) { println("amount changed") refresh() } } |