android tween动画效果

 

anim文件夹下

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <set xmlns:android="http://schemas.android.com/apk/res/android"
 3     android:shareInterpolator="false" >
 4 
 5     <alpha
 6         android:duration="1000"
 7         android:fromAlpha="1"
 8         android:repeatCount="infinite"
 9         android:repeatMode="reverse"
10         android:toAlpha="0" />
11 
12 </set>

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