自定义 CheckBox样式

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

<CheckBox
android:id="@+id/radioButton1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@drawable/btn_check"
android:button="@null"
android:checked="true"/>