This is a really simple and funny animation for Android. You could find similar animations when sending "Happy birthday" or something else special in WeChat app.
Now you are able to add this funny thing to your own app as well. Give a surprise to your users on Christmas Day by dropping emojis!
CannyViewAnimator is an enhanced version of
ViewAnimator. It allows to use Animators and Transitions to extend Visibility. The logic is taken from ViewAnimator of the Android SDK. ViewAnimator allows only one child to be visible at a time. Setting another child to be visible causes the previous child to become invisible. This switching occurs with animation.