Created
July 31, 2020 19:27
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import SwiftUI | |
struct TappableView: UIViewRepresentable { | |
let onTap: () -> Void | |
let onPress: (Bool) -> Void | |
func makeUIView(context: Context) -> UIView { | |
TappableUIView(onTap: onTap, onPress: onPress) | |
} | |
func updateUIView(_ uiView: UIView, context: Context) {} | |
} | |
class TappableUIView: UIView, UIGestureRecognizerDelegate { | |
let onTap: () -> Void | |
let onPress: (Bool) -> Void | |
init(onTap: @escaping () -> Void, onPress: @escaping (Bool) -> Void) { | |
self.onTap = onTap | |
self.onPress = onPress | |
super.init(frame: .zero) | |
backgroundColor = .clear | |
} | |
required init?(coder aDecoder: NSCoder) { | |
fatalError() | |
} | |
override func didMoveToWindow() { | |
super.didMoveToWindow() | |
addTapRecognizer() | |
addPressRecognizer() | |
removeTouchDelay(view: self) | |
} | |
func addTapRecognizer() { | |
let recognizer = UITapGestureRecognizer() | |
recognizer.delegate = self | |
recognizer.addTarget(self, action: #selector(handleTap)) | |
addGestureRecognizer(recognizer) | |
} | |
func addPressRecognizer() { | |
let recognizer = UILongPressGestureRecognizer() | |
recognizer.minimumPressDuration = 0 | |
recognizer.delegate = self | |
recognizer.addTarget(self, action: #selector(handlePress)) | |
addGestureRecognizer(recognizer) | |
} | |
func removeTouchDelay(view: UIView) { | |
guard view is UIWindow == false else { | |
return | |
} | |
view.gestureRecognizers?.forEach { recognizer in | |
recognizer.delaysTouchesBegan = false | |
} | |
if let parent = view.superview { | |
removeTouchDelay(view: parent) | |
} | |
} | |
@objc fileprivate func handleTap(_ sender: UIGestureRecognizer) { | |
switch sender.state { | |
case .ended: onTap() | |
default: () | |
} | |
} | |
@objc fileprivate func handlePress(_ sender: UIGestureRecognizer) { | |
switch sender.state { | |
case .possible, .began, .changed: onPress(true) | |
case .ended, .cancelled, .failed: onPress(false) | |
@unknown default: onPress(false) | |
} | |
} | |
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) { | |
onPress(true) | |
} | |
func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldRecognizeSimultaneouslyWith otherGestureRecognizer: UIGestureRecognizer) -> Bool { | |
true | |
} | |
} |
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