android自定义ProgressBar

<ProgressBar
                android:id="@+id/ProgressBar"
                style="@style/progressbar_horizontal"
                android:layout_width="300dp"
                android:layout_height="wrap_content"
                android:max="100"
                android:progress="0" />

<style name="progressbar_horizontal">
        <item name="android:indeterminateOnly">false</item>
        <item name="android:progressDrawable">@drawable/download_progressbar</item>
        <item name="android:indeterminateDrawable">@android:drawable/progress_indeterminate_horizontal</item>
        <item name="android:maxHeight">30dip</item>
        <item name="android:minHeight">10dip</item>
    </style>

<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >

    <item android:id="@android:id/background">
            <nine-patch android:src="@drawable/progress_bg" android:dither="true" />
    </item>

    <item android:id="@android:id/progress">
        <clip>
            <nine-patch android:src="@drawable/progress_pr" android:dither="true" />
        </clip>
    </item>

</layer-list>

提供两张.9图片下载：

http://pan.baidu.com/s/1c0cSArQ

http://pan.baidu.com/s/1mgt7pkG

效果图：