oulingWeibo/res/drawable/widget_btn.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">

	<item android:state_focused="false" android:state_selected="false"
		android:state_pressed="false" android:drawable="@drawable/btn_bg_n" />
	<item android:state_focused="false" android:state_selected="true"
		android:state_pressed="false" android:drawable="@drawable/btn_bg_d" />
	<item android:state_focused="true" android:state_selected="false"
		android:state_pressed="false" android:drawable="@drawable/btn_bg_s" />
	<item android:state_focused="true" android:drawable="@drawable/btn_bg_s" />

</selector>