ios - animate - uiview animation swift 3

Swift: mueve UIView en gesto de diapositiva

Question

Estoy tratando de mover un UIView en el gesto de deslizamiento hacia arriba desde su posición inicial a una posición final fija. La imagen debe moverse con el gesto de la mano, y no animar de forma independiente.

No he intentado nada, ya que no tengo ni idea de por dónde empezar, qué clase de gesto usar.

Answer 1

Actualización para Swift 3.x

Al asignar el selector, la sintaxis ha cambiado y ahora requiere #selector

let gesture = UIPanGestureRecognizer(target: self, action: #selector(navViewDragged(gesture:)))
self.navLayoutView.addGestureRecognizer(gesture)
self.navLayoutView.isUserInteractionEnabled = true
gesture.delegate = self

Implementación de la función:

func navViewDragged(gesture: UIPanGestureRecognizer){
//Code here
}

Answer 2

Así es como realmente lo hace como la vista de noticias en la aplicación Stocks

Primero agregue 2 restricciones en Storyboard a la vista deslizante, una para su estado cuando está completamente abierta y otra para cuando está cerrada. No olvide dejar una de las restricciones deshabilitada / no instalada para que su vista se vea abierta o cerrada cuando se alcance la escena. Haz referencia a ellos en tu código

@IBOutlet weak var optionsOpenedConstraint: NSLayoutConstraint!
@IBOutlet weak var optionsVisiableConstraint: NSLayoutConstraint!

ahora agregue el UIPanGestureRecognizer a su vista en la función viewDidLoad .

let gesture = UIPanGestureRecognizer(target: self, action: #selector(type(of: self).wasDragged(gestureRecognizer:)))
optionsView.addGestureRecognizer(gesture)

Finalmente agregue este callback y 2 funciones:

@objc func wasDragged(gestureRecognizer: UIPanGestureRecognizer) {
let distanceFromBottom = screenHeight - gestureRecognizer.view!.center.y
if gestureRecognizer.state == UIGestureRecognizer.State.began || gestureRecognizer.state == UIGestureRecognizer.State.changed {
optionsOpenedConstraint.isActive = false
optionsVisiableConstraint.isActive = false
let translation = gestureRecognizer.translation(in: self.view)
if((distanceFromBottom - translation.y) < 100) {
gestureRecognizer.view!.center = CGPoint(x: gestureRecognizer.view!.center.x, y: gestureRecognizer.view!.center.y + translation.y)
gestureRecognizer.setTranslation(CGPoint(x: 0, y: 0), in: self.view)
}
}
if gestureRecognizer.state == UIGestureRecognizer.State.ended{
if distanceFromBottom > 6{
openOptionsPanel()
}else{
closeOptionsPanel()
}
}
}
func openOptionsPanel(){
optionsOpenedConstraint.isActive = true
optionsVisiableConstraint.isActive = false
UIView.animate(withDuration: 0.5) {
self.view.layoutIfNeeded()
}
}
func closeOptionsPanel(){
optionsOpenedConstraint.isActive = false
optionsVisiableConstraint.isActive = true
UIView.animate(withDuration: 0.5) {
self.view.layoutIfNeeded()
}
}

y voalá

Answer 3

Finalmente lo hice como abajo.

let gesture = UIPanGestureRecognizer(target: self, action: Selector("wasDragged:"))
slideUpView.addGestureRecognizer(gesture)
slideUpView.userInteractionEnabled = true
gesture.delegate = self

Se llama a la siguiente función cuando se detecta el gesto, (aquí estoy restringiendo la vista para que tenga un centre.y máximo de 555, y estoy restableciendo de nuevo a 554 cuando la vista se mueve más allá de este punto)

func wasDragged(gestureRecognizer: UIPanGestureRecognizer) {
if gestureRecognizer.state == UIGestureRecognizerState.Began || gestureRecognizer.state == UIGestureRecognizerState.Changed {
let translation = gestureRecognizer.translationInView(self.view)
print(gestureRecognizer.view!.center.y)
if(gestureRecognizer.view!.center.y < 555) {
gestureRecognizer.view!.center = CGPointMake(gestureRecognizer.view!.center.x, gestureRecognizer.view!.center.y + translation.y)
}else {
gestureRecognizer.view!.center = CGPointMake(gestureRecognizer.view!.center.x, 554)
}
gestureRecognizer.setTranslation(CGPointMake(0,0), inView: self.view)
}
}

Answer 4

Mueve la vista a cualquier lugar en Swift 3

let panGesture = UIPanGestureRecognizer(target: self, action: #selector(dragged(gestureRecognizer:)))
demoView.isUserInteractionEnabled = true
demoView.addGestureRecognizer(panGesture)

Función

@objc func dragged(gestureRecognizer: UIPanGestureRecognizer) {
if gestureRecognizer.state == UIGestureRecognizerState.began || gestureRecognizer.state == UIGestureRecognizerState.changed {
let translation = gestureRecognizer.translation(in: self.view)
gestureRecognizer.view!.center = CGPoint(x: gestureRecognizer.view!.center.x + translation.x, y: gestureRecognizer.view!.center.y + translation.y)
gestureRecognizer.setTranslation(CGPoint(x: 0, y: 0), in: self.view)
}
}

Answer 5

Probablemente quieras usar un UIPanGestureRecognizer .

let gesture = UIPanGestureRecognizer(target: self, action: Selector("wasDragged:"))
customView.addGestureRecognizer(gesture)
gesture.delegate = self

Y para arrastrar el objeto solo a lo largo del eje y:

func wasDragged(gesture: UIPanGestureRecognizer) {
let translation = gesture.translationInView(self.view)
// Use translation.y to change the position of your customView, e.g.
customView.center.y = translation.y // Customize this.
}

Answer 6

Swift 4:

@objc func wasDragged(gestureRecognizer: UIPanGestureRecognizer) {
if gestureRecognizer.state == UIGestureRecognizerState.began || gestureRecognizer.state == UIGestureRecognizerState.changed {
let translation = gestureRecognizer.translation(in: self.view)
print(gestureRecognizer.view!.center.y)
if(gestureRecognizer.view!.center.y < 555) {
gestureRecognizer.view!.center = CGPoint(x: gestureRecognizer.view!.center.x, y: gestureRecognizer.view!.center.y + translation.y)
}else {
gestureRecognizer.view!.center = CGPoint(x:gestureRecognizer.view!.center.x, y:554)
}
gestureRecognizer.setTranslation(CGPoint(x: 0, y: 0), in: self.view)
}
}

Llamada

let gesture = UIPanGestureRecognizer(target: self, action: self.wasDragged(gestureRecognizer:))
customView.addGestureRecognizer(gesture)
gesture.delegate = self

Answer 7

@IBAction func handlePanGesture(_ recognizer: UIPanGestureRecognizer) {
if MainView.bounds.contains(mainImage.frame) {
let recognizerCenter = recognizer.location(in: MainView)
mainImage.center = recognizerCenter
}
if MainView.bounds.intersection(mainImage.frame).width > 50 && MainView.bounds.intersection(mainImage.frame).height > 0 {
let recognizerCenter = recognizer.location(in: MainView)
print(recognizerCenter)
mainImage.center = recognizerCenter
}
}
@IBAction func handlePinchGesture(_ recognizer: UIPinchGestureRecognizer) {
mainImage.transform = mainImage.transform.scaledBy(x: recognizer.scale, y: recognizer.scale)
recognizer.scale = 1.0
}
@IBAction func handleRotateGesture(_ recognizer: UIRotationGestureRecognizer) {
mainImage.transform = mainImage.transform.rotated(by: recognizer.rotation)
recognizer.rotation = 0.0
}