Spring

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This is a lightweight version of Meng To's Spring animation library with just the necessary files for animations and easy drop-in for any Swift project.

Installation

Drop in the Spring folder to your Xcode project.

Usage with Storyboard

In Identity Inspector, connect the UIView to SpringView Class and set the animation properties in Attribute Inspector.

Usage with Code

layer.animation = "squeezeDown"
layer.animate()

Chaining Animations

layer.y = -50
animateToNext {
  layer.animation = "fall"
  layer.animateTo()
}

Functions

animate()
animateNext { ... }
animateTo()
animateToNext { ... }

Animations

slideLeft
slideRight
slideDown
slideUp
squeezeLeft
squeezeRight
squeezeDown
squeezeUp
zoomIn
zoomOut
fadeIn
fadeOut
fadeInLeft
fadeInRight
fadeInDown
fadeInUp
fall
rotate
heartBeat
pulse
shake
pop
swing
morph
squeeze
wobble
flash
flipX
flipY

Curves

spring
linear 
easeIn 
easeOut 
easeInOut

Properties

animation
curve
autostart
autohide
delay
duration
force
damping
velocity
rotateDegrees
repeatCount
x
y
scaleX
scaleY
rotate

* Not all properties work together. Play with the demo app.

Autostart

Allows you to animate without code. Don't need to use this is if you plan to start the animation in code.

Autohide

Saves you the hassle of adding a line "layer.alpha = 0" in viewDidLoad().

Known issue

Animations won't autostart when view is reached via performSegueWithIdentifier.

Animations using IBInspectables are currently not working in iOS 7. iOS 8 is supported. We're looking for a fix. Animations in code works for both iOS 7 and 8.

Tutorials

• Tutorials available on Design+Code.
• Integrate Spring to existing Objective-C projects

ChangeLog

• At ChangeLog wiki page

License

Spring is released under the MIT license. See LICENSE for details.