LazyFadeInView is a cool way to animate the appearance of a label. This effect is a clone of Secret app. You can find Objective-C version in here
To use LazyFadeInView, create a LazyFadeInView and add it to your view. It will animate to show up once it's text is set.
An example of making a lazy fade in view:
var lazyFadeInView: LazyFadeInView = LazyFadeInView.init(frame: CGRectMake(20, 100, UIScreen.mainScreen().bounds.size.width - 40, 200))
lazyFadeInView?.textColor = UIColor.blackColor()
lazyFadeInView?.text = strayBirds
self.view.addSubview(lazyFadeInView!)
LazyFadeInView is available under the MIT license, see the LICENSE file for more information.