Android SeekBar xml配置

Seek_img.xml
<?xml version="1.0" encoding="utf-8"?>
<layer-list
  xmlns:android="http://schemas.android.com/apk/res/android"
>
<!-- 背景图 -->
  <item
    android:id="@+android:id/background"
    android:drawable="@drawable/seekbar1" />
    <!--全部能量图  -->
  <item
    android:id="@+android:id/SecondaryProgress"
    android:drawable="@drawable/seekbar1" />
    <!-- 进和能量图 -->
  <item
    android:id="@+android:id/progress"
    android:drawable="@drawable/seekbar2" />
</layer-list>

Thumb.xml
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">           
    <!-- 按下状态 -->    
    <item       
        android:state_pressed="true" android:state_focused="true"      
        android:drawable="@drawable/seekbar_thumb" />      
    <!-- 普通无焦点状态 -->    
    <item       
        android:state_focused="false"       
        android:state_pressed="false"     
        android:drawable="@drawable/seekbar_thumb" />    
</selector>  

<SeekBar android:id="@+id/seekbar" android:layout_width="260dip" android:layout_gravity="center_horizontal"
		android:layout_height="24dip" android:progress="0"
		android:secondaryProgress="0" android:paddingTop="5px" android:paddingBottom="5px"
		android:progressDrawable="@layout/seek_img" 
　　　　　　　　　　android:thumb="@layout/thumb" />