1.主Activity中的的主xml文件:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >

    <ProgressBar
        style="@style/my_pg_style"
        android:layout_centerInParent="true"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/hello_world" />

</RelativeLayout>

 

 

2.复制系统中的progressBar样式:

获取的路径:F:\AndroidSDK\android-sdk\platforms\android-16\data\res\values\styles.xml

<style name="my_pg_style">
        <item name="android:indeterminateOnly">true</item>
        <item name="android:indeterminateDrawable">@drawable/progress_medium_white</item>
        <item name="android:indeterminateBehavior">repeat</item>
        <item name="android:indeterminateDuration">3500</item>
        <item name="android:minWidth">48dip</item>
        <item name="android:maxWidth">48dip</item>
        <item name="android:minHeight">48dip</item>
        <item name="android:maxHeight">48dip</item>
    </style>

progress_medium_white 文件是在:F:\AndroidSDK\android-sdk\platforms\android-16\data\res\drawable\progress_medium_white.xml 得到的

 

 

 

 

3.系统主题:

获取系统主题的路径:F:\AndroidSDK\android-sdk\platforms\android-16\data\res\values\theme.xml

 <style name="Red_NoTitleBar">
        <item name="android:windowFullscreen">true</item>
         <item name="android:windowNoTitle">true</item>
         <item name="android:background">#ff0000</item>
    </style>
    <style name="Blue_NoTitleBar" parent="@style/Red_NoTitleBar"> <!--继承关系-->
        <item name="android:background">#00ff00</item>
    </style>

 作用在Manifest中的 Activity上面,

<activity
            android:theme="@style/Blue_NoTitleBar"
            android:name="com.example.styletheme2.MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>