The usage Color State List Resource

USAGE：

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="#ff1bb5d7"/> <!-- 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="match_parent"    android:layout_height="wrap_content"    android:text="@string/button_text"    android:textColor="@color/button_text" />