Android Resources ---color about text

Note:If you want to provide a static color resource,use a simple color value.

In Java: R.color.filename
In XML: @[package:]color/filenameSYNTAX:

<?xml version="1.0" encoding="utf-8"?>
<selectorxmlns: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>
1>selector:颜色源文件的根元素
2>item：定义某一特定状态下的颜色属性包括”state“和color

state:
android:state_pressed 是否按下
android:state_focused 是否取得焦点
android:state_selected 是否被选择
android:state_checkabled 组件是否能被check
android:state_checked 被check了//
android:state_enabled 能够接受触摸或者接触事件
android:state_window_focused 应用程序是否在前台

注：对于不同状态的item，程序会自上而下的匹配，最先匹配的得到程序

XML file saved at res/color/button_text.xml:

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_pressed="true"
          android:color="#ffff0000"/><!-- pressed -->
    <item android:state_focused="true"
          android:color="#ff0000ff"/><!-- focused -->
    <item android:color="#ff000000"/><!-- default -->
</selector>

This layout XML will apply the color list to a View:

<Button
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="@string/button_text"
    android:textColor="@color/button_text"/>

注：同样的方法可以设置View的背景，以drawable Resource代替color Resource也可行。