UIButton + LongPress.md

UIButton + UILongPressGestureRecognizer

swift4

• 通常のボタンタップとロングプレスを判定する

import UIKit

class ViewController: UIViewController {
    
    @IBOutlet weak var button: UIButton!
    @IBOutlet weak var label: UILabel!
    var timer: Timer?
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        label.text = "0"
        
        let longPress = UILongPressGestureRecognizer(target: self, action: #selector(self.longPress(gesture:)))
        longPress.minimumPressDuration = 1
        button.addGestureRecognizer(longPress)
    }
    
    @objc func longPress(gesture: UILongPressGestureRecognizer) {
        
        if gesture.state == .began {
            print("Long Press")
            timer = Timer.scheduledTimer(withTimeInterval: 0.5, repeats: true) { (_) in
                guard let _ = self.timer,
                    let text = self.label.text,
                    let count = Int(text) else { return }
                self.label.text = String(count + 10)
            }
        }
        
        if gesture.state == .ended {
            timer?.invalidate()
        }
    }
    
    @IBAction func normalButtonTap(sender: UIButton) {
        print("Button tapped")
    }
}