//【使用progressBar】

<ProgressBar
                    android:id="@+id/level_progressBar1"
                    style="@style/Widget.Holo.Light.orange_ProgressBar.Horizontal"
                    android:layout_width="120dp"
                    android:layout_height="wrap_content"
                    android:layout_below="@+id/exp_tv"
                    android:layout_centerHorizontal="true" />



//【res/values/styles.xml】

<style name="Widget.Holo.Light.orange_ProgressBar.Horizontal" parent="@android:style/Widget.Holo.ProgressBar.Horizontal">
        <item name="android:progressDrawable">@drawable/progress_horizontal_orange_holo_light</item>
    </style>



//【res/drawable/progress_horiaontal_orange_holo_light.xml】

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

    <item android:id="@android:id/background"
          android:drawable="@drawable/orange_progress_bk" />

    <item android:id="@android:id/secondaryProgress">
        <scale android:scaleWidth="100%"
               android:drawable="@drawable/orange_progress_light_bk" />
    </item>

    <item android:id="@android:id/progress">
        <scale android:scaleWidth="100%"
               android:drawable="@drawable/orange_progress_light_bk" />
    </item>

</layer-list>
  
 //补充:orange_progress_bk、orange_progress_light_bk、orange_progress_light_bk是三张9.patch图片