矢量动画的简单使用

/**
 * 矢量动画的简单使用 前提：API21以上版本
 * 1.导入矢量图vd_star（随便命名）
 * 2.创建 animated-vector
      <animated-vector xmlns:android="http://schemas.android.com/apk/res/android"
         android:drawable="@drawable/vd_star" >  要执行动画的矢量图
         <target
         android:name="star_group"               让name为star_group的属性执行动画star_rotate，
         android:animation="@animator/star_rotate" />
         <target
         android:name="star"                     让name为star的属性执行动画star_shap
         android:animation="@animator/star_shap" />
         </animated-vector>

        star_group和start为vd_star对应属性的名称
 3.(1)动画 star_rotate
       <set xmlns:android="http://schemas.android.com/apk/res/android"
         android:ordering="sequentially">
         <set
         android:ordering="together">
         <objectAnimator
         android:duration="300"
         android:propertyName="scaleX"
         android:valueFrom="0.0"
         android:valueTo="1.0"/>
         <objectAnimator
         android:duration="300"
         android:propertyName="scaleY"
         android:valueFrom="0.0"
         android:valueTo="1.0"/>
         </set>
         <objectAnimator
         android:duration="500"
         android:propertyName="rotation"
         android:valueFrom="0"
         android:valueTo="360"/>

 </set>
    (2)动画 star_shap
         <set xmlns:android="http://schemas.android.com/apk/res/android"
         android:shareInterpolator="true"
         android:interpolator="@android:anim/accelerate_interpolator"
         android:ordering="sequentially"
         >
         <objectAnimator
         android:duration="500"
         android:propertyName="pathData"
         android:valueFrom="@string/star_data"
         android:valueTo="@string/star_lollipop"
         android:valueType="pathType"/>
         <objectAnimator
         android:duration="500"
         android:propertyName="pathData"
         android:valueFrom="@string/star_lollipop"
         android:valueTo="@string/star_data"
         android:valueType="pathType"/>
         </set>

 4.(1)矢量图 vd_star
         <?xml version="1.0" encoding="utf-8"?>
         <vector xmlns:android="http://schemas.android.com/apk/res/android"
         android:viewportWidth="400"
         android:viewportHeight="400"
         android:width="300px"
         android:height="300px">

         <group android:name="star_group"
         android:pivotX="200"
         android:pivotY="200"
         android:scaleX="1.0"
         android:scaleY="1.0">

         <path
         android:name="star"
         android:fillColor="#FF00FF"
         android:pathData="M 200.30535,69.729172
         C 205.21044,69.729172 236.50709,141.52218 240.4754,144.40532
         C 244.4437,147.28846 322.39411,154.86809 323.90987,159.53312
         C 325.42562,164.19814 266.81761,216.14828 265.30186,220.81331
         C 263.7861,225.47833 280.66544,301.9558 276.69714,304.83894
         C 272.72883,307.72209 205.21044,268.03603 200.30534,268.03603
         C 195.40025,268.03603 127.88185,307.72208 123.91355,304.83894
         C 119.94524,301.9558 136.82459,225.47832 135.30883,220.8133
         C 133.79307,216.14828 75.185066,164.19813 76.700824,159.53311
         C 78.216581,154.86809 156.16699,147.28846 160.13529,144.40532
         C 164.1036,141.52218 195.40025,69.729172 200.30535,69.729172 z"/>
         </group>
         </vector>
 (2)矢量图  @string/star_lollipop
         <path
         android:fillColor="#FF00FF"
         android:pathData="M 223.42,133.484
         C 237.895,98.1973 280.378,100.58 295.49,133.484
         C 302.176,148.044 293.576,165.914 270.253,183.357
         C 264.16,187.914 268.606,245.136 268.606,248.852
         C 268.606,256.589 268.606,295.171 268.606,302.907
         C 268.606,322.848 268.606,329.725 268.606,339.649
         C 268.606,347.385 255.048,349.681 255.048,339.649
         C 255.048,331.913 255.361,310.637 255.048,302.907
         C 254.579,291.371 255.048,256.788 255.048,249.052
         C 255.048,238.561 254.706,187.75 248.302,183.489
         C 221.536,165.677 218.848,144.628 223.42,133.484 z" />

         @string/star_data
         <path
         android:name="star"
         android:fillColor="#FF00FF"
         android:pathData="M 200.30535,69.729172
         C 205.21044,69.729172 236.50709,141.52218 240.4754,144.40532
         C 244.4437,147.28846 322.39411,154.86809 323.90987,159.53312
         C 325.42562,164.19814 266.81761,216.14828 265.30186,220.81331
         C 263.7861,225.47833 280.66544,301.9558 276.69714,304.83894
         C 272.72883,307.72209 205.21044,268.03603 200.30534,268.03603
         C 195.40025,268.03603 127.88185,307.72208 123.91355,304.83894
         C 119.94524,301.9558 136.82459,225.47832 135.30883,220.8133
         C 133.79307,216.14828 75.185066,164.19813 76.700824,159.53311
         C 78.216581,154.86809 156.16699,147.28846 160.13529,144.40532
         C 164.1036,141.52218 195.40025,69.729172 200.30535,69.729172 z"/>

 5.布局文件
         <ImageView
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:onClick="anim1"
         android:src="@drawable/animate_vd_star" />

 6.主要代码
         public void anim1(View v){
         ImageView iv = (ImageView) v;
         Drawable drawable = iv.getDrawable();
         if(drawable instanceof Animatable){
         ((Animatable)drawable).start();
         }
         }


 *
 */