android PopupWindow 添加下拉展开动画效果

来源：互联网发布：巨人网络 2017财报编辑：程序博客网时间：2024/06/05 03:35

1.两个动画，包括show 和hide

show:

<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android"    android:fillAfter="true"    android:fillEnabled="true" >    <scale        android:duration="200"        android:fromXScale="1.0"        android:fromYScale="0.0"        android:interpolator="@android:anim/accelerate_decelerate_interpolator"        android:pivotX="50%"        android:pivotY="0%"        android:toXScale="1.0"        android:toYScale="1.0" >    </scale>      <alpha        android:duration="180"             android:fromAlpha="0.0"        android:toAlpha="1.0" /></set>

hide:

<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android"     android:fillEnabled="true"    android:fillAfter="true">    <scale        android:duration="200"            android:fromXScale="1.0"        android:fromYScale="1.0"        android:interpolator="@android:anim/accelerate_interpolator"        android:pivotX="50%"        android:pivotY="0%"        android:toXScale="1.0"        android:toYScale="0.0" >    </scale>    <alpha        android:duration="180"               android:fromAlpha="1.0"        android:toAlpha="0.0" /></set>

2.添加动画样式:

 <style name="popmenu_animation" parent="android:Animation">        <item name="android:windowEnterAnimation">@anim/popumenu_animation_show</item>        <item name="android:windowExitAnimation">@anim/popumenu_animation_hide</item>    </style>

3.添加动画

PopupWindow.setAnimationStyle(R.style.popmenu_animation);

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