android {
 defaultConfig {
  // 不让gradle自动生成不同屏幕分辨率的png图
  generatedDensities = []
 }

 aaptOptions {
  additionalParameters "--no-version-vectors"
 }
}

android {
 defaultConfig {
  vectorDrawables.useSupportLibrary = true
 }
}

<!-- res/drawable/heart.xml -->
<vector xmlns:android="http://schemas.android.com/apk/res/android"
  android:width="24dp"
  android:height="24dp"
  android:viewportHeight="24.0"
  android:viewportWidth="24.0">
  <path
    android:fillColor="#FF000000"
    android:pathData="M11.99,2C6.47,2 2,6.48 2,12s4.47,10 9.99,10C17.52,22 22,17.52 22,12S17.52,2 11.99,2zM12,20c-4.42,0 -8,-3.58 -8,-8s3.58,-8 8,-8 8,3.58 8,8 -3.58,8 -8,8zM15.5,11c0.83,0 1.5,-0.67 1.5,-1.5S16.33,8 15.5,8 14,8.67 14,9.5s0.67,1.5 1.5,1.5zM8.5,11c0.83,0 1.5,-0.67 1.5,-1.5S9.33,8 8.5,8 7,8.67 7,9.5 7.67,11 8.5,11zM12,17.5c2.33,0 4.31,-1.46 5.11,-3.5L6.89,14c0.8,2.04 2.78,3.5 5.11,3.5z" />
</vector>

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:tools="http://schemas.android.com/tools"
  xmlns:app="http://schemas.android.com/apk/res-auto"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:paddingBottom="@dimen/activity_vertical_margin"
  android:paddingLeft="@dimen/activity_horizontal_margin"
  android:paddingRight="@dimen/activity_horizontal_margin"
  android:paddingTop="@dimen/activity_vertical_margin"
  tools:context="com.damon.vectordrawabledemo.MainActivity">

  <ImageView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    app:srcCompat="@drawable/ic_mood_black_24dp" />
</RelativeLayout>

<vector xmlns:android="http://schemas.android.com/apk/res/android"
  <!-- 图片本身的大小 -->
  android:width="500px"
  android:height="500px"
  <!-- 画布的大小 -->
  android:viewportHeight="500"
  android:viewportWidth="500">
  <!-- 用来把多个path或者subgroup组合起来，group提供了一些属性比如旋转、缩放、平移。这些属性值得变化会反应在它内部的path和subgroup元素上-->
  <group
    android:scaleX="5.0"
    android:scaleY="5.0">
    <!-- 这里group和path有一个name属性，这个属性用来在使用动画时指定动画要驱动的对象 -->
    <path
      android:name="star"
      android:pathData="M 50.0,90.0 L 82.9193546357,27.2774101308 L 12.5993502926,35.8158045183 L 59.5726265715,88.837672697 L 76.5249063296,20.0595700732 L 10.2916450361,45.1785327898 L 68.5889268818,85.4182410261 L 68.5889268818,14.5817589739 L 10.2916450361,54.8214672102 L 76.5249063296,79.9404299268 L 59.5726265715,11.162327303 L 12.5993502926,64.1841954817 L 82.9193546357,72.7225898692 L 50.0,10.0 L 17.0806453643,72.7225898692 L 87.4006497074,64.1841954817 L 40.4273734285,11.162327303 L 23.4750936704,79.9404299268 L 89.7083549639,54.8214672102 L 31.4110731182,14.5817589739 L 31.4110731182,85.4182410261 L 89.7083549639,45.1785327898 L 23.4750936704,20.0595700732 L 40.4273734285,88.837672697 L 87.4006497074,35.8158045183 L 17.0806453643,27.2774101308 L 50.0,90.0Z"
      android:strokeColor="@color/colorAccent"
      android:strokeWidth="2" />
  </group>
</vector>

<?xml version="1.0" encoding="utf-8"?>
<animated-vector xmlns:android="http://schemas.android.com/apk/res/android"
  android:drawable="@drawable/vector_drawable">
  <target
    android:name="star"
    android:animation="@animator/star_anim" />
</animated-vector>

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android" >
  <objectAnimator
    android:duration="5000"
    android:propertyName="trimPathStart"
    android:repeatCount="infinite"
    android:repeatMode="restart"
    android:valueFrom="1"
    android:valueTo="0" />
  <objectAnimator
    android:duration="5000"
    android:propertyName="strokeColor"
    android:repeatCount="infinite"
    android:repeatMode="restart"
    android:valueFrom="@color/colorAccent"
    android:valueTo="@color/colorPrimaryDark" />
</set>

 <ImageView
    android:id="@+id/image_view"
    android:layout_width="200dp"
    android:layout_height="200dp"
    app:srcCompat="@drawable/vector_drawable_anim" />

 ImageView imageView = (ImageView) findViewById(R.id.image_view);
Drawable drawable = imageView.getDrawable();
//AnimatedVectorDrawableCompat实现了Animatable接口
if (drawable instanceof Animatable){
  ((Animatable) drawable).start();
}