项目介绍：

AZTransitions

https://github.com/azimin/AZTransitions

Make your modal transition with custom animation.
AZTransitions helps you think about creativity, giving specific API methods.

AZTransitions 使用自定义动画进行模态转换。提供具体的API方法。

Visual Example

Installation

• Add the following to your Podfile and run pod install

pod 'AZTransitions'

• or add the following to your Cartfile and run carthage update

github "azimin/AZTransitions"

• or clone as a git submodule,

• or just copy AZTransitions/Source/CustomModalTransition.swift into your project.

Code Example

To create any custom transition just subclass CustomModalTransition:

class FashionTransition: CustomModalTransition { 
  override init() {
    super.init(duration: 0.5)
  }
}

—

Then set as az_modalTransition to nessesary view just before presenting it

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
  segue.destination.customModalTransition = FashionTransition()
}

or

func show() {
  let viewController = UIViewController()
  viewController.az_modalTransition = FashionTransition()
  self.present(viewController, animated: true, completion: nil)
}

—

To have custom present animation, just implement performTransition(interactive: Bool) inside your FashionTransition class:

func performTransition(interactive: Bool) {
  self.presentedViewController.view.alpha = 0.0
    
  UIView.animate(withDuration: duration, animations: {
    self.presentedViewController.view.alpha = 1.0
    self.presentingViewController.view.alpha = 0.0
  }, completion: { (completed) in
    self.presentingViewController.view.alpha = 1.0
    self.finishAnimation(completion: nil)
  })
}

As you may have guessed, you have different properties. The main ones:

• duration — transition duration

• presentingViewController — the presenting view controller (bottom one)

• presentedViewController — view controller that is going to be presented (top one)

You can animate them as you want.