안드로이드 TranslateAnimation 둥둥 표현하기

http://stackoverflow.com/questions/7281276/how-to-move-image-up-and-down-continuously-using-translate-animation-in-android

http://www.javasrilankansupport.com/2013/06/how-to-move-an-image-from-left-to-right-and-right-to-left-in-android.html