修改SeekBar样式

典型的SeekBar：

<SeekBar

android:id="@+id/player_seekbar"

android:layout_width="245px"

android:layout_height="25px"

android:progressDrawable="@drawable/seekbar_style"

android:thumb="@drawable/thumb"

android:paddingLeft="16px"

android:paddingRight="15px"

android:paddingTop="5px"

android:paddingBottom="5px"

android:progress="0"

android:max="0"

android:secondaryProgress="0"

/>

其中android:progressDrawable="@drawable/seekbar_style"背景条配置如下：

<?xml version="1.0" encoding="UTF-8"?>  
  
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">  
  
     <item android:id="@android:id/background">  
         <shape>  
             <corners android:radius="5dip" />  
             <gradient  
                     android:startColor="#ff9d9e9d"  
                     android:centerColor="#ff5a5d5a"  
                     android:centerY="0.75"  
                     android:endColor="#ff747674"  
                     android:angle="270"  
             />  
         </shape>  
     </item>  
  
     <item android:id="@android:id/secondaryProgress">  
         <clip>  
             <shape>  
                 <corners android:radius="5dip" />  
                 <gradient  
                         android:startColor="#80ffd300"  
                         android:centerColor="#80ffb600"  
                         android:centerY="0.75"  
                         android:endColor="#a0ffcb00"  
                         android:angle="270"  
                 />  
             </shape>  
         </clip>  
     </item>  
  
     <item android:id="@android:id/progress">  
         <clip>  
             <shape>  
                 <corners android:radius="5dip" />  
                 <gradient  
                         android:startColor="#ff0099CC"  
                         android:centerColor="#ff3399CC"  
                         android:centerY="0.75"  
                         android:endColor="#ff6699CC"  
                         android:angle="270"  
                 />  
             </shape>  
         </clip>  
     </item>  
  
</layer-list>

或者使用图片：

<?xml version="1.0" encoding="utf-8"?>  
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">  
       
    <item android:id="@android:id/background"   
          android:drawable="@drawable/progress_bg" />  
        
    <item android:id="@android:id/secondaryProgress"  
          android:drawable="@drawable/second_progress">  
    </item>      
       
    <item android:id="@android:id/progress"  
          android:drawable="@drawable/first_progress">  
           
    </item>   
</layer-list>

android:thumb="@drawable/thumb"就是那个可以拖动的小滑块：

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