[转帖]Android自定义Activity漂亮跳转效果
<set xmlns:android="http://schemas.android.com/apk/res/android"?
??????? android:interpolator="@android:anim/decelerate_interpolator">??
??? <scale android:fromXScale="2.0" android:toXScale="1.0"?
?????????? android:fromYScale="2.0" android:toYScale="1.0"?
?????????? android:pivotX="50%p" android:pivotY="50%p"?
?????????? android:duration="@android:integer/config_mediumAnimTime" />??
</set>?

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
??????? android:interpolator="@android:anim/decelerate_interpolator">
??? <scale android:fromXScale="2.0" android:toXScale="1.0"
?????????? android:fromYScale="2.0" android:toYScale="1.0"
?????????? android:pivotX="50%p" android:pivotY="50%p"
?????????? android:duration="@android:integer/config_mediumAnimTime" />
</set>
?

2，动画退出效果：zoomout.xml

<?xml version="1.0" encoding="utf-8"?>??
<set xmlns:android="http://schemas.android.com/apk/res/android"?
??????? android:interpolator="@android:anim/decelerate_interpolator"?
??????? android:zAdjustment="top">??
??? <scale android:fromXScale="1.0" android:toXScale=".5"?
?????????? android:fromYScale="1.0" android:toYScale=".5"?
?????????? android:pivotX="50%p" android:pivotY="50%p"?
?????????? android:duration="@android:integer/config_mediumAnimTime" />??
??? <alpha android:fromAlpha="1.0" android:toAlpha="0"?
?????????? android:duration="@android:integer/config_mediumAnimTime"/>??
</set>?

转自：http://hi.baidu.com/hbzha/blog/item/eeb42afd30726beafd037f18.html