android 转场动画

    <style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
        <item name="android:windowBackground">@color/rx_background_color</item>
        <item name="android:windowAnimationStyle">@style/AppStoreActivityAnimation</item>

    </style>

    <style name="AppStoreActivityAnimation" parent="@android:style/Animation.Activity">
        <item name="android:activityOpenEnterAnimation">@anim/open_activity_enter</item>
        <item name="android:activityOpenExitAnimation">@anim/open_activity_exit</item>
        <item name="android:activityCloseEnterAnimation">@anim/close_activity_enter</item>
        <item name="android:activityCloseExitAnimation">@anim/close_activity_exit</item>
    </style>

<?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:duration="200"
        android:fromXScale="0.8"
        android:fromYScale="0.8"
        android:pivotX="50.0%"
        android:pivotY="50.0%"
        android:toXScale="1.0"
        android:toYScale="1.0" />

    <alpha
        android:duration="200"
        android:fromAlpha="0.0"
        android:toAlpha="1.0" />

</set>

<?xml version="1.0" encoding="UTF-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
    android:interpolator="@android:anim/accelerate_interpolator" >

    <scale
        android:duration="200"
        android:fromXScale="1.0"
        android:fromYScale="1.0"
        android:pivotX="50.0%"
        android:pivotY="50.0%"
        android:toXScale="1.0"
        android:toYScale="1.0" />

    <alpha
        android:duration="200"
        android:fromAlpha="1.0"
        android:toAlpha="0.0" />

</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:duration="200"
        android:fromXScale="1.0"
        android:fromYScale="1.0"
        android:pivotX="50.0%"
        android:pivotY="50.0%"
        android:toXScale="1.0"
        android:toYScale="1.0" />

    <alpha
        android:duration="200"
        android:fromAlpha="0.0"
        android:toAlpha="1.0" />

</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:duration="200"
        android:fromXScale="1.0"
        android:fromYScale="1.0"
        android:pivotX="50.0%"
        android:pivotY="50.0%"
        android:toXScale="0.8"
        android:toYScale="0.8" />

    <alpha
        android:duration="200"
        android:fromAlpha="1.0"
        android:toAlpha="0.0" />

</set>