动画dialog
menu_dissmiss
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
<alpha android:fromAlpha="1.0"
android:toAlpha="0.0"
android:duration="500"/>


<translate android:fromYDelta="0"
android:toYDelta="-100%p"
android:duration="500"/>

<scale android:fromXScale="1.0"
android:fromYScale="1.0"
android:toXScale="0.3"
android:toYScale="0.2"
android:pivotX="90%"
android:pivotY="10%"
android:duration="500" />
</set>

menu_show
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">

<alpha android:fromAlpha="0.0"
android:toAlpha="1.0"
android:duration="500"/>


<translate android:fromYDelta="-100%p"
android:toYDelta="0" android:duration="500"/>

<scale android:fromXScale="0.2"
android:fromYScale="0.3"
android:toXScale="1.0"
android:toYScale="1.0"
android:pivotX="90%"
android:pivotY="10%"
android:duration="500" />
</set>