preference是什么

Preference是安卓常用的偏好设置界面，安卓系统的设置的子菜单使用的就是它。用途多种多样。

教程开始

checkbox修改教程

首先反编译framework-res.apk

找到res/layout/preference_widget_checkbox.xml文件

添加button属性，内容为@drawable/btn_switch，同时放drawable/btn_switch.xml文件到目录中

btn_switch.xml 文件内容
<?xml version="1.0" encoding="utf-8"?>
<selector
xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_window_focused="false" android:state_enabled="true" android:state_checked="true" android:drawable="@drawable/btn_switch_on" />
<item android:state_window_focused="false" android:state_enabled="true" android:state_checked="false" android:drawable="@drawable/btn_switch_off" />
<item android:state_enabled="true" android:state_checked="true" android:state_pressed="true" android:drawable="@drawable/btn_switch_on" />
<item android:state_enabled="true" android:state_checked="false" android:state_pressed="true" android:drawable="@drawable/btn_switch_off" />
<item android:state_focused="true" android:state_enabled="true" android:state_checked="true" android:drawable="@drawable/btn_switch_on" />
<item android:state_focused="true" android:state_enabled="true" android:state_checked="false" android:drawable="@drawable/btn_switch_off" />
<item android:state_enabled="true" android:state_checked="false" android:drawable="@drawable/btn_switch_off" />
<item android:state_enabled="true" android:state_checked="true" android:drawable="@drawable/btn_switch_on" />
<item android:state_window_focused="false" android:state_checked="true" android:drawable="@drawable/btn_switch_on_disable" />
<item android:state_window_focused="false" android:state_checked="false" android:drawable="@drawable/btn_switch_off_disable" />
<item android:state_focused="true" android:state_checked="true" android:drawable="@drawable/btn_switch_on_disable" />
<item android:state_focused="true" android:state_checked="false" android:drawable="@drawable/btn_switch_off_disable" />
<item android:state_checked="false" android:drawable="@drawable/btn_switch_off_disable" />
<item android:state_checked="true" android:drawable="@drawable/btn_switch_on_disable" />
</selector>

同时放置对应的图片

回编译替换文件即可

2. PreferenceCategory修改教程

PreferenceCategory就是设置中的分割栏

找到 res/layout/preference_category.xml

可以看到里面只有一个TextView控件，剩下的就自己修改属性了