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PopupWindow添加动画效果

1.定义PopupWindow弹出与消失的两个动画文件,放在anim文件夹下

popup_enter.xml

<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android">    <translate         android:fromYDelta="100%p"        android:toYDelta="0"        android:duration="1000"/>    <alpha         android:fromAlpha="0.0"        android:toAlpha="1.0"        android:duration="1000"/></set>

popup_exit.xml

<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android">    <translate        android:fromYDelta="0"        android:toYDelta="100%p"        android:duration="1000"/>    <alpha         android:fromAlpha="1.0"        android:toAlpha="0.0"        android:duration="1000"/></set>

2.styles.xml文件中注册这两个动画效果

<resources>    <style name="popupAnimation">        <item name="android:windowEnterAnimation">@anim/popup_enter</item>        <item name="android:windowExitAnimation">@anim/popup_exit</item>    </style></resources>

3.为创建的PopopWindow添加动画

inflater = getLayoutInflater();layout = inflater.inflate(R.layout.menu, null);menu = new PopupWindow(layout, WindowManager.LayoutParams.MATCH_PARENT, WindowManager.LayoutParams.WRAP_CONTENT);menu.setAnimationStyle(R.style.popupAnimation);//添加动画