Custom Segue (left-right ; right-left)

customsegue.txt

//create a custom segue on storyboard between two ***UIViewControllers***  (ie. this example doesn’t need a navigation controller)

//use the class below as the custom segue class.
//use your own identifier eg. “customSegue”)

class CustomSegue: UIStoryboardSegue {

	override func perform() {
		
		let src = self.sourceViewController
		let dst = self.destinationViewController
		
		src.view.superview?.insertSubview(dst.view, aboveSubview: src.view)
		
		//for left to right transition
		//dst.view.transform = CGAffineTransformMakeTranslation(-src.view.frame.size.width, 0)

		//for right to left transition (same as a Push segue)
		dst.view.transform = CGAffineTransformMakeTranslation(src.view.frame.size.width, 0)
		
		UIView.animateWithDuration(0.25,
		                           delay: 0.0,
		                           options: UIViewAnimationOptions.CurveEaseInOut,
		                           animations: {
									dst.view.transform = CGAffineTransformMakeTranslation(0, 0)
			},
		                           completion: { finished in
									src.presentViewController(dst, animated: false, completion: nil)
			}
		)
		
	}
}

//in the source view controller you trigger the segue -> below is an example of executing a segue from a button tap Action..
@IBAction func performSegue(sender: UIButton) {
	self.performSegueWithIdentifier("customSegueId", sender: self)
}