I am just curios if Android supports animated launcher icons like the iOS has the Calendar app which always shows the current day or the Clock which has a moving hand on the icon.
Not in general. Android has app widgets for that.
Some home screen implementations might offer developers an API to have animated launcher icons, but that would be up to those specific home screen implementations. There is nothing standard in Android for this.
来源：https://stackoverflow.com/questions/27463068/is-it-possible-to-have-animated-launcher-icons-for-android-apps