text: <?xml version="1.0" encoding="utf-8"?>
  <!-- 左上角缩小 -->
    <scale   xmlns:android="http://schemas.android.com/apk/res/android"
          android:interpolator="@android:anim/accelerate_decelerate_interpolator"  
          android:fromXScale="1.0"   
          android:toXScale="0.001"   
          android:fromYScale="1.0"   
          android:toYScale="0.001"   
          android:pivotX="15%"  
          android:pivotY="25%"  
          android:duration="200" />  
     