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

    <!-- 按压状态 -->
    <item android:drawable="@drawable/ico_pet_active" android:state_checked="true" />
    <!-- 默认状态 -->
    <item android:drawable="@drawable/ico_pet" />

</selector>