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SWIFT: Extend UIView to add fadeIn() and fadeOut() functions
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| import Foundation | |
| import UIKit | |
| extension UIView { | |
| func fadeIn(_ duration: TimeInterval = 1.0, delay: TimeInterval = 0.0, completion: @escaping ((Bool) -> Void) = {(finished: Bool) -> Void in}) { | |
| UIView.animate(withDuration: duration, delay: delay, options: UIViewAnimationOptions.curveEaseIn, animations: { | |
| self.alpha = 1.0 | |
| }, completion: completion) } | |
| func fadeOut(_ duration: TimeInterval = 1.0, delay: TimeInterval = 0.0, completion: @escaping (Bool) -> Void = {(finished: Bool) -> Void in}) { | |
| UIView.animate(withDuration: duration, delay: delay, options: UIViewAnimationOptions.curveEaseIn, animations: { | |
| self.alpha = 0.0 | |
| }, completion: completion) | |
| } | |
| } | |
| // Usage | |
| // self.label.fadeOut(completion: { | |
| // (finished: Bool) -> Void in | |
| // self.label.text = "Replacement text" | |
| // self.label.fadeIn() | |
| // }) |
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