360项目总结02

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="@drawable/function_greenbutton_pressed" android:state_pressed="true"/>//按下的图片
<!-- pressed -->
<item android:drawable="@drawable/function_greenbutton_pressed" android:state_focused="true"/>//获取焦点的图片
<!-- focused -->
<item android:drawable="@drawable/function_greenbutton_normal"/>
<!-- default -->//默认图片

</selector>
怎么用？可给任何view对象设置。
<Button
android:background="@drawable/btn_green_selector"
/>//将选择器设置给Button