Hey I wanted to ask you how I can implement the Swipe back Gesture in Swift. So I want that the user start at the Home View Controller and then he can tap on the "happy number Rechner"-Button and then the calculator View Controller appears. Like the same way with the transitions in the Settings App of iOS. And if you swipe left the Home View should appear again. Thank you!
import UIKit
let alert = UIAlertController(title: "Warning",
message: "Your number is too big.",
preferredStyle: .alert)
class ViewController: UIViewController {
// Verbindungen zu Storyboard
@IBAction func rechnerEntry(_ sender: Any) {
}
@IBOutlet weak var resultLabel: UILabel!
@IBOutlet weak var buttons: UIButton!
@IBAction func clear(_ sender: Any) {
calculatorLabel.text = ""
number = 0
}
override func viewDidLoad() {
super.viewDidLoad()
buttons.backgroundColor = UIColor.gray
}
// Aufführung happyFuncs
func happyFunc(number: Int) -> Int {
var myNum = number
var sum = 0
while myNum > 0 {
let x = myNum % 10
sum += (x * x)
myNum /= 10
}
return sum
}
// happyCheckerFunc
func happyChecker(_ x: Int) -> Bool {
var alreadychecked: Set<Int> = Set()
var result = happyFunc(number: x)
while !alreadychecked.contains(result) {
if result == 1 {
resultLabel.text = "your number is a happy number"
return true
}
alreadychecked.insert(result)
result = happyFunc(number: result)
}
resultLabel.text = "your number is a unhappy number"
return false
}
// Eingabe Werte
var number = 0
var x = 0
@IBOutlet weak var calculatorLabel: UILabel!
var isTypingNumber = false
// Nummer getippt
@IBAction func numberTapped(_ sender: UIButton) {
let number = sender.currentTitle ?? (sender.titleLabel?.text ?? "0")
if isTypingNumber {
calculatorLabel.text = calculatorLabel.text! + number
} else {
calculatorLabel.text = number
isTypingNumber = true
}
}
// Überprüfung happy?
@IBAction func happycheck(_ sender: UIButton) {
number = Int(calculatorLabel.text!)!
x = number
if x > 9999999999999999 {
alert.addAction(UIAlertAction(title: "OK",
style: .default,
handler: { _ in
print("OK tap")
}))
present(alert, animated: true, completion: nil)
}
func happyFunc(number: Int) -> Int {
var myNum = number
var sum = 0
while myNum > 0 {
let x = myNum % 10
sum += (x * x)
myNum /= 10
}
return sum
}
func happyChecker(_ x: Int) -> Bool {
var alreadychecked: Set<Int> = Set()
var result = happyFunc(number: x)
while !alreadychecked.contains(result) {
if result == 1 {
resultLabel.text = "your number is a happy number"
return true
}
alreadychecked.insert(result)
result = happyFunc(number: result)
}
resultLabel.text = "your number is a unhappy number"
return false
}
happyChecker(x)
}
}
