分為以下幾個步驟：

1，首先，要實現動態的theme，因此要自定義屬於自己的attr, 在values 中新建 attrs.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
   <attr name="pageBackground" fromat="style"/>
   <attr name="buttonStyle" fromat="style"/>   
   <attr name="headBackground" fromat="style"/>
   <attr name="headBackButton" fromat="style"/> 
</resources>

2，定義自己的theme,在values / style.xml 檔案中加入： 

    <!-- 木質主題  -->
    <style name="theme_xylon" parent="android:Theme.Light.NoTitleBar">
        <item name="pageBackground">@style/xylon_back</item>
        <item name="headBackground">@style/xylon_head</item>
        <item name="headBackButton">@style/xylon_headback_button</item>
        <item name="buttonStyle">@style/xylon_button</item>
    </style>
    
    <style name="xylon_back">
		<item name="android:background">@drawable/xylon_bg</item>
	</style>
	<style name="xylon_button">
		<item name="android:background">@drawable/xylon_btn_selector</item>
	</style>
	<style name="xylon_head">
	    <item name="android:background">@drawable/xylon_head_bg</item>
	    <item name="android:paddingLeft">10dp</item>
	    <item name="android:paddingRight">10dp</item>
	</style>
	<style name="xylon_headback_button">
	    <item name="android:background">@drawable/xylon_btn_rect</item>
	</style>
 

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" 
    style="?pageBackground">"

	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setTheme(R.style.theme_xylon);
		setContentView(R.layout.activity_cardio_test);
}
 

完工。