问题
I'm trying to do scale animation for UIButton when its clicked but what I'm trying to accomplish is when the button clicked I need the UIButton to be smaller to the inside then it comes back to its same size (like a bubble).
I tried the following:
button.transform = CGAffineTransformMakeScale(-1, 1)
UIView.animateWithDuration(0.5, animations: { () -> Void in
button.transform = CGAffineTransformMakeScale(1,1)
})
回答1:
Try this
UIView.animate(withDuration: 0.6,
animations: {
self.button.transform = CGAffineTransform(scaleX: 0.6, y: 0.6)
},
completion: { _ in
UIView.animate(withDuration: 0.6) {
self.button.transform = CGAffineTransform.identity
}
})
回答2:
SWIFT 5 Code Update :I have animated button with a nice bouncing effect , with spring animation.
@IBOutlet weak var button: UIButton!
@IBAction func animateButton(sender: UIButton) {
sender.transform = CGAffineTransform(scaleX: 0.6, y: 0.6)
UIView.animate(withDuration: 2.0,
delay: 0,
usingSpringWithDamping: CGFloat(0.20),
initialSpringVelocity: CGFloat(6.0),
options: UIView.AnimationOptions.allowUserInteraction,
animations: {
sender.transform = CGAffineTransform.identity
},
completion: { Void in() }
)
}
回答3:
All of the answers above are valid.
As a plus, with Swift I suggest to create an extension of UIView in order to "scale" any view you want.
You can take inspiration from this piece of code:
extension UIView {
/**
Simply zooming in of a view: set view scale to 0 and zoom to Identity on 'duration' time interval.
- parameter duration: animation duration
*/
func zoomIn(duration duration: NSTimeInterval = 0.2) {
self.transform = CGAffineTransformMakeScale(0.0, 0.0)
UIView.animateWithDuration(duration, delay: 0.0, options: [.CurveLinear], animations: { () -> Void in
self.transform = CGAffineTransformIdentity
}) { (animationCompleted: Bool) -> Void in
}
}
/**
Simply zooming out of a view: set view scale to Identity and zoom out to 0 on 'duration' time interval.
- parameter duration: animation duration
*/
func zoomOut(duration duration: NSTimeInterval = 0.2) {
self.transform = CGAffineTransformIdentity
UIView.animateWithDuration(duration, delay: 0.0, options: [.CurveLinear], animations: { () -> Void in
self.transform = CGAffineTransformMakeScale(0.0, 0.0)
}) { (animationCompleted: Bool) -> Void in
}
}
/**
Zoom in any view with specified offset magnification.
- parameter duration: animation duration.
- parameter easingOffset: easing offset.
*/
func zoomInWithEasing(duration duration: NSTimeInterval = 0.2, easingOffset: CGFloat = 0.2) {
let easeScale = 1.0 + easingOffset
let easingDuration = NSTimeInterval(easingOffset) * duration / NSTimeInterval(easeScale)
let scalingDuration = duration - easingDuration
UIView.animateWithDuration(scalingDuration, delay: 0.0, options: .CurveEaseIn, animations: { () -> Void in
self.transform = CGAffineTransformMakeScale(easeScale, easeScale)
}, completion: { (completed: Bool) -> Void in
UIView.animateWithDuration(easingDuration, delay: 0.0, options: .CurveEaseOut, animations: { () -> Void in
self.transform = CGAffineTransformIdentity
}, completion: { (completed: Bool) -> Void in
})
})
}
/**
Zoom out any view with specified offset magnification.
- parameter duration: animation duration.
- parameter easingOffset: easing offset.
*/
func zoomOutWithEasing(duration duration: NSTimeInterval = 0.2, easingOffset: CGFloat = 0.2) {
let easeScale = 1.0 + easingOffset
let easingDuration = NSTimeInterval(easingOffset) * duration / NSTimeInterval(easeScale)
let scalingDuration = duration - easingDuration
UIView.animateWithDuration(easingDuration, delay: 0.0, options: .CurveEaseOut, animations: { () -> Void in
self.transform = CGAffineTransformMakeScale(easeScale, easeScale)
}, completion: { (completed: Bool) -> Void in
UIView.animateWithDuration(scalingDuration, delay: 0.0, options: .CurveEaseOut, animations: { () -> Void in
self.transform = CGAffineTransformMakeScale(0.0, 0.0)
}, completion: { (completed: Bool) -> Void in
})
})
}
}
Usage is very simply:
let button = UIButton(frame: frame)
button.zoomIn() // here the magic
Swift 3 Version
extension UIView {
/**
Simply zooming in of a view: set view scale to 0 and zoom to Identity on 'duration' time interval.
- parameter duration: animation duration
*/
func zoomIn(duration: TimeInterval = 0.2) {
self.transform = CGAffineTransform(scaleX: 0.0, y: 0.0)
UIView.animate(withDuration: duration, delay: 0.0, options: [.curveLinear], animations: { () -> Void in
self.transform = CGAffineTransform.identity
}) { (animationCompleted: Bool) -> Void in
}
}
/**
Simply zooming out of a view: set view scale to Identity and zoom out to 0 on 'duration' time interval.
- parameter duration: animation duration
*/
func zoomOut(duration: TimeInterval = 0.2) {
self.transform = CGAffineTransform.identity
UIView.animate(withDuration: duration, delay: 0.0, options: [.curveLinear], animations: { () -> Void in
self.transform = CGAffineTransform(scaleX: 0.0, y: 0.0)
}) { (animationCompleted: Bool) -> Void in
}
}
/**
Zoom in any view with specified offset magnification.
- parameter duration: animation duration.
- parameter easingOffset: easing offset.
*/
func zoomInWithEasing(duration: TimeInterval = 0.2, easingOffset: CGFloat = 0.2) {
let easeScale = 1.0 + easingOffset
let easingDuration = TimeInterval(easingOffset) * duration / TimeInterval(easeScale)
let scalingDuration = duration - easingDuration
UIView.animate(withDuration: scalingDuration, delay: 0.0, options: .curveEaseIn, animations: { () -> Void in
self.transform = CGAffineTransform(scaleX: easeScale, y: easeScale)
}, completion: { (completed: Bool) -> Void in
UIView.animate(withDuration: easingDuration, delay: 0.0, options: .curveEaseOut, animations: { () -> Void in
self.transform = CGAffineTransform.identity
}, completion: { (completed: Bool) -> Void in
})
})
}
/**
Zoom out any view with specified offset magnification.
- parameter duration: animation duration.
- parameter easingOffset: easing offset.
*/
func zoomOutWithEasing(duration: TimeInterval = 0.2, easingOffset: CGFloat = 0.2) {
let easeScale = 1.0 + easingOffset
let easingDuration = TimeInterval(easingOffset) * duration / TimeInterval(easeScale)
let scalingDuration = duration - easingDuration
UIView.animate(withDuration: easingDuration, delay: 0.0, options: .curveEaseOut, animations: { () -> Void in
self.transform = CGAffineTransform(scaleX: easeScale, y: easeScale)
}, completion: { (completed: Bool) -> Void in
UIView.animate(withDuration: scalingDuration, delay: 0.0, options: .curveEaseOut, animations: { () -> Void in
self.transform = CGAffineTransform(scaleX: 0.0, y: 0.0)
}, completion: { (completed: Bool) -> Void in
})
})
}
}
回答4:
Swift 3.x+
extension UIButton {
func pulsate() {
let pulse = CASpringAnimation(keyPath: "transform.scale")
pulse.duration = 0.2
pulse.fromValue = 0.95
pulse.toValue = 1.0
pulse.autoreverses = true
pulse.repeatCount = 2
pulse.initialVelocity = 0.5
pulse.damping = 1.0
layer.add(pulse, forKey: "pulse")
}
func flash() {
let flash = CABasicAnimation(keyPath: "opacity")
flash.duration = 0.2
flash.fromValue = 1
flash.toValue = 0.1
flash.timingFunction = CAMediaTimingFunction(name: kCAMediaTimingFunctionEaseInEaseOut)
flash.autoreverses = true
flash.repeatCount = 3
layer.add(flash, forKey: nil)
}
func shake() {
let shake = CABasicAnimation(keyPath: "position")
shake.duration = 0.05
shake.repeatCount = 2
shake.autoreverses = true
let fromPoint = CGPoint(x: center.x - 5, y: center.y)
let fromValue = NSValue(cgPoint: fromPoint)
let toPoint = CGPoint(x: center.x + 5, y: center.y)
let toValue = NSValue(cgPoint: toPoint)
shake.fromValue = fromValue
shake.toValue = toValue
layer.add(shake, forKey: "position")
}
}
Usage:
myButton.flash()
// myButton.pulsate()
// myButton.shake()
Credits: Sean Allen
回答5:
Swift 3 Version:
UIView.animate(withDuration: 0.6, animations: {
button.transform = CGAffineTransform.identity.scaledBy(x: 0.6, y: 0.6)
}, completion: { (finish) in
UIView.animate(withDuration: 0.6, animations: {
button.transform = CGAffineTransform.identity
})
})
回答6:
Using Swift 4 Xcode 9, This will animate the button down when initially pressed and then back up when released.
extension UIView {
func animateButtonDown() {
UIView.animate(withDuration: 0.1, delay: 0.0, options: [.allowUserInteraction, .curveEaseIn], animations: {
self.transform = CGAffineTransform(scaleX: 0.9, y: 0.9)
}, completion: nil)
}
func animateButtonUp() {
UIView.animate(withDuration: 0.1, delay: 0.0, options: [.allowUserInteraction, .curveEaseOut], animations: {
self.transform = CGAffineTransform.identity
}, completion: nil)
}
Implementation:
@IBAction func buttonTouchDown(_ sender: UIButton) {
//Connected with Touch Down Action
sender.animateButtonDown()
}
@IBAction func buttonTouchUpOutside(_ sender: UIButton) {
//Connected with Touch Up Outside Action
//if touch moved away from button
sender.animateButtonUp()
}
@IBAction func buttonTouchUpInside(_ sender: UIButton) {
//Connected with Touch Up Inside Action
sender.animateButtonUp()
//code to execute when button pressed
}
回答7:
It works with me as following, the animation is set to be small then when it start animation it get back to its original size:
Swift 2
button.transform = CGAffineTransformMakeScale(0.6, 0.6)
UIView.animateWithDuration(0.3, animations: { () -> Void in
button.transform = CGAffineTransformMakeScale(1,1)
})
Swift 3, 4, 5
button.transform = CGAffineTransform.init(scaleX: 0.6, y: 0.6)
UIView.animate(withDuration: 0.3, animations: { () -> Void in
button.transform = CGAffineTransform.init(scaleX: 1, y: 1)
})
回答8:
I prefer to have the press animation and set it more fast than the other examples, with the completion control for waiting until the animation is ended:
Swift 3:
extension UIButton {
func press(completion:@escaping ((Bool) -> Void)) {
UIView.animate(withDuration: 0.05, animations: {
self.transform = CGAffineTransform(scaleX: 0.8, y: 0.8) }, completion: { (finish: Bool) in
UIView.animate(withDuration: 0.1, animations: {
self.transform = CGAffineTransform.identity
completion(finish)
})
})
}
}
Usage:
@IBAction func playPauseBtnTap(_ sender: Any) {
let playPauseBtn = sender as! UIButton
playPauseBtn.press(completion:{ finish in
if finish {
print("animation ended")
}
}
}
回答9:
Using the following animation the button will start from its full size, decrease to 0.6 with a spring animation to bounce back to it's full size.
[UIView animateWithDuration:0.5 delay:0 usingSpringWithDamping:0.4 initialSpringVelocity:0.3 options:0 animations:^{
//Animations
button.transform = CGAffineTransformIdentity;
CGAffineTransformMakeScale(0.6, 0.6)
} completion:^(BOOL finished) {
//Completion Block
[UIView.animateWithDuration(0.5){
button.transform = CGAffineTransformIdentity
}];
}];
回答10:
iOS 9 and xCode 7
//for zoom in
[UIView animateWithDuration:0.5f animations:^{
self.sendButton.transform = CGAffineTransformMakeScale(1.5, 1.5);
} completion:^(BOOL finished){}];
// for zoom out
[UIView animateWithDuration:0.5f animations:^{
self.sendButton.transform = CGAffineTransformMakeScale(1, 1);
}completion:^(BOOL finished){}];
回答11:
This will give a wonderful bouncing effect:
@IBAction func TouchUpInsideEvent(sender: UIButton) {
UIView.animateWithDuration(2.0,
delay: 0,
usingSpringWithDamping: CGFloat(0.20),
initialSpringVelocity: CGFloat(6.0),
options: UIViewAnimationOptions.AllowUserInteraction,
animations: {
sender.transform = CGAffineTransformIdentity
},
completion: { Void in() }
)
}
@IBAction func touchDownEvent(sender: UIButton) {
UIView.animateWithDuration(0.15, animations: {
sender.transform = CGAffineTransformMakeScale(0.6, 0.6)
})
}
回答12:
You can try this if you want a Autoreverse effect with a completion handler.
viewToAnimate.transform = CGAffineTransform(scaleX: 0.1, y: 0.1)
UIView.animate(withDuration: 0.7, // your duration
delay: 0,
usingSpringWithDamping: 0.2,
initialSpringVelocity: 6.0,
animations: { _ in
viewToAnimate.transform = .identity
},
completion: { _ in
// Implement your awesome logic here.
})
回答13:
Scaling Button or any view about three times or more use following code. swift 3 or swift 4 with xcode 9.
UIView.animate(withDuration: 0.2, animations: {
self.cartShowHideBtnView.transform = CGAffineTransform(scaleX: 1.3, y: 1.3)
}, completion: { (finish: Bool) in
UIView.animate(withDuration: 0.2, animations: {
self.cartShowHideBtnView.transform = CGAffineTransform.identity
}, completion:{(finish: Bool) in
UIView.animate(withDuration: 0.2, animations: {
self.cartShowHideBtnView.transform = CGAffineTransform(scaleX: 1.3, y: 1.3)
}, completion: { (finish: Bool) in
UIView.animate(withDuration: 0.2, animations: {
self.cartShowHideBtnView.transform = CGAffineTransform.identity
}, completion:{(finish: Bool) in
UIView.animate(withDuration: 0.2, animations: {
self.cartShowHideBtnView.transform = CGAffineTransform(scaleX: 1.3, y: 1.3)
}, completion: { (finish: Bool) in
UIView.animate(withDuration: 0.2, animations: {
self.cartShowHideBtnView.transform = CGAffineTransform.identity
})
})
})
})
})
})
回答14:
I did a protocol using Swift 4, that you can use at some specifics UIViews that you want to animate... You can try some animations over here or change time and delay.
This way is recommended because you can use this protocol and others at one view and this view can use this functions, doing a lot os extensions from UIView create code smell.
import Foundation
import UIKit
protocol Showable where Self: UIView {}
extension Showable {
func show(_ view: UIView? = nil) {
if let view = view {
self.animate(view)
} else {
self.animate(self)
}
}
private func animate(_ view: UIView) {
view.transform = CGAffineTransform(scaleX: 0.0, y: 0.0)
UIView.animate(withDuration: 2.0,
delay: 0,
usingSpringWithDamping: CGFloat(0.20),
initialSpringVelocity: CGFloat(6.0),
options: [.allowUserInteraction],
animations: {
view.transform = CGAffineTransform.identity
})
}
}
回答15:
Here is a working example :
extension UIButton{
func flash() {
let flash = CABasicAnimation(keyPath: "opacity")
flash.duration = 0.5
flash.fromValue = 1
flash.toValue = 0.1
flash.timingFunction = CAMediaTimingFunction(name: kCAMediaTimingFunctionEaseInEaseOut)
flash.autoreverses = true
flash.repeatCount = 3
layer.add(flash, forKey: nil)
}
}
@IBAction func taptosave(_ sender: UIButton) {
sender.flash()
}
来源：https://stackoverflow.com/questions/31320819/scale-uibutton-animation-swift