android小功能：checkbox使用自己的背景点击切换背景

xiazai_checkbox.xml

<?xml version="1.0" encoding="utf-8"?> <selector xmlns:android="http://schemas.android.com/apk/res/android" > <item android:state_selected="true" android:drawable="@drawable/hookicon_repost_pressed"></item> <item android:state_checked="true" android:drawable="@drawable/hookicon_repost_pressed"></item> <item android:state_pressed="true" android:drawable="@drawable/hookicon_repost_pressed"></item> <item android:drawable="@drawable/ic_checkbox_normal"></item> </selector>

 <CheckBox
      android:id="@+id/xiazai_checkbox" android:layout_width="25dp" android:layout_height="25dp" android:layout_alignParentRight="true" android:layout_alignParentTop="true" android:layout_marginRight="30dp" android:layout_marginTop="10dp" android:button="@null" android:background="@drawable/xiazai_checkbox" />