從中間擴充和縮小

shrink_to_middle.xml

<set xmlns:android="http://schemas.android.com/apk/res/android">     <scale         android:interpolator="@android:anim/linear_interpolator"         android:fromXScale="1.0"         android:toXScale="1.0"         android:fromYScale="1.0"         android:toYScale="0.0"         android:fillAfter="false"         android:duration="200" />     <translate         android:fromYDelta="0"         android:toYDelta="50%"         android:duration="200"/> </set> 

grow_from_middle.xml

<?xml version="1.0" encoding="utf-8"?> <set xmlns:android="http://schemas.android.com/apk/res/android">     <scale         android:interpolator="@android:anim/linear_interpolator"         android:fromXScale="1.0"         android:toXScale="1.0"         android:fromYScale="0.0"         android:toYScale="1.0"         android:fillAfter="false"         android:startOffset="200"         android:duration="200" />     <translate         android:fromYDelta="50%"         android:toYDelta="0"         android:startOffset="200"         android:duration="200"/> </set>

 

 連結地址：http://wang-peng1.iteye.com/category/86455