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1 控件内容（如字体颜色）在不同状态下有不同的表现色
ref:http://developer.android.com/guide/topics/resources/color-list-resource.html
res/color/radio_state.xml
<?xml version="1.0" encoding="utf-8"?> <selector xmlns:android="http://schemas.android.com/apk/res/android" > <item android:color="hex_color" android:state_pressed=["true" | "false"] android:state_focused=["true" | "false"] android:state_selected=["true" | "false"] android:state_checkable=["true" | "false"] android:state_checked=["true" | "false"] android:state_enabled=["true" | "false"] android:state_window_focused=["true" | "false"] /> </selector>
2. 控件背景（背景样式与颜色）在不同状态下的不同表现结果：
ref：http://developer.android.com/guide/topics/resources/drawable-resource.html
res/drawable/radio_state.xml
<?xml version="1.0" encoding="utf-8"?> <selector xmlns:android="http://schemas.android.com/apk/res/android" android:constantSize=["true" | "false"] android:dither=["true" | "false"] android:variablePadding=["true" | "false"] > <item android:drawable="@[package:]drawable/drawable_resource" android:state_pressed=["true" | "false"] android:state_focused=["true" | "false"] android:state_hovered=["true" | "false"] android:state_selected=["true" | "false"] android:state_checkable=["true" | "false"] android:state_checked=["true" | "false"] android:state_enabled=["true" | "false"] android:state_activated=["true" | "false"] android:state_window_focused=["true" | "false"] /> </selector>
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原文地址：http://www.cnblogs.com/atwind/p/4576782.html
