UIImageViewModeScaleAspect 2.0

You want to add pod 'UIImageViewModeScaleAspect', '~> 2.0' similar to the following to your Podfile:

target 'MyApp' do
  pod 'UIImageViewModeScaleAspect', '~> 2.0'
end

Then run a pod install inside your terminal, or from CocoaPods.app.

Alternatively to give it a test run, run the command:

pod try UIImageViewModeScaleAspect

UIImageViewModeScaleAspect 2.0

By
Vivien Cormier

UIImageViewModeScaleAspect (2.0)

Create animation of a UIImageView between two contentMode ( UIViewContentModeScaleAspectFill / UIViewContentModeScaleAspectFit )

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Compatible Swift 3.0

Screenshot & Demo Video

To see a demo video, click here

How To Get Started

Use Pod (or download and add “UIImageViewModeScaleAspect.swift” in your xcodeprojet.) :

pod 'UIImageViewModeScaleAspect'

Init the UIImageViewModeScaleAspect. Important ! Do not forget to init the contentMode :

let myImage = UIImageViewModeScaleAspect(frame: CGRect(x: 0, y: 100, width: 200, height: 100))
myImage.contentMode = .scaleAspectFill // Add the first contentMode
myImage.image = UIImage(named: "Octocat")
view.addSubview(myImage)

Automatic animation

For convert UIViewContentModeScaleAspectFill to UIViewContentModeScaleAspectFit :

myImage.animate( .fit, frame: CGRect(x: 0, y: 0, width: 200, height: 200), duration: 0.4)

For convert UIViewContentModeScaleAspectFit to UIViewContentModeScaleAspectFill :

myImage.animate( .fill, frame: CGRect(x: 0, y: 0, width: 200, height: 200), duration: 0.4)

Manual animation

For convert UIViewContentModeScaleAspectFill to UIViewContentModeScaleAspectFit :

myImage.initialeState(.fit, newFrame: CGRect(x: 0, y: 100, width: 200, height: 100))

UIView.animate(withDuration: 0,4, delay: 0, options: .allowAnimatedContent, animations: {
  //
  // Others Animation
  //
  myImage.transitionState(.fit)
}, completion: { (finished) in
  myImage.endState(.fit)
})

For convert UIViewContentModeScaleAspectFit to UIViewContentModeScaleAspectFill :

myImage.initialeState(.fill, newFrame: CGRect(x: 0, y: 100, width: 200, height: 100))

UIView.animate(withDuration: 0,4, delay: 0, options: .allowAnimatedContent, animations: {
  //
  // Others Animation
  //
  myImage.transitionState(.fill)
}, completion: { (finished) in
  myImage.endState(.fill)
})