android 属性动画

Android属性动画主要分为两种：
ValueAnimator和ObjectAnimator两种,总体来说区别并不大。
ObjectAnimator是继承的ValueAnimator。就相当于对ValueAnimator的一种封装，操作更方便点。
所以先来了解下ValueAnimator：
我们要使用一个东西 当然避免不了要初始化一个变量：
ValueAnimator有很多的静态方法来获取ValueAnimator。
static ValueAnimator ofArgb(int… values)
Constructs and returns a ValueAnimator that animates between color values.
static ValueAnimator ofFloat(float… values)
Constructs and returns a ValueAnimator that animates between float values.
static ValueAnimator ofInt(int… values)
Constructs and returns a ValueAnimator that animates between int values.
static ValueAnimator ofObject(TypeEvaluator evaluator, Object… values)
Constructs and returns a ValueAnimator that animates between Object values.
static ValueAnimator ofPropertyValuesHolder(PropertyValuesHolder… values)
Constructs and returns a ValueAnimator that animates between the values specified in the PropertyValuesHolder objects.

例子：
ValueAnimator animator = ValueAnimator.ofObject(new PenghuiEvaluator(), new Penghui(155, 45.54f), new Penghui(777, 888));