Android学习笔记之样式和主题之选择器

（1）布局文件

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_alignParentLeft="true"
        android:layout_marginBottom="189dp"
        android:layout_marginLeft="55dp"
        android:textColor="@color/button_selector"
        android:text="测试颜色列表状态" />

</RelativeLayout>

需要在按钮里边使用：android:textColor="@color/button_selector"

button-selector文件内容如下：

<?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"/>
    <item android:state_focused="true" android:color="#ff0000ff"/>
    <item android:color="#ff000000"/>

</selector>