CheckBox自定义背景

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

<item android:drawable="@drawable/checkbox_press" android:state_checked="true"></item>
<item android:drawable="@drawable/checkbox_press" android:state_selected="true"></item>
<item android:drawable="@drawable/checkbox_press" android:state_pressed="true"></item>
<item android:drawable="@drawable/checkbox_bg"></item>

</selector>

<CheckBox
android:id="@+id/noti_checkbox2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:background="@drawable/checkbox_selector"
android:button="@null" />