junwinson

First, you should set SeekBar XML :

<SeekBar
	.
	.	
	android:progressDrawable="@drawable/seekbar_style"
	android:thumb="@drawable/thumb_style"
	.
	.
/>

Second, set seekbar_style like this (Use .PNG image)

<?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/seekbar_bg" />

<item android:id="@android:id/secondaryProgress">
    <clip android:drawable="@drawable/seekbar_sp" />
</item>
<item android:id="@android:id/progress">
    <clip android:drawable="@drawable/seekbar_fp" />
</item>
</layer-list> 

and you can set seekbar_style another xml description like this:

<?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="15dip" />
    		<gradient
            		android:startColor="#ffa9a9a9"
            		android:centerColor="#ffe8e8e8"
            		android:centerY="0.75"
            		android:endColor="#ffd1d1d1"
            		android:angle="270"
		/>
    	</shape>
    </item> 
    <item   android:id = "@android:id/secondaryProgress" >   
		<clip >   
			<shape >   
				<corners   android:radius = "15dip"   />   
				<gradient   
				android:startColor = "#ffb2cfef"   
				android:centerColor = "#ffd1deef"   
				android:centerY = "0.75"   
				android:endColor = "#ff446fb7"   
				android:angle = "270"   
				/>   
			</shape >   
		</clip >   
	</item >   
	<item   android:id = "@android:id/progress" >   
		<clip >   
			<shape >   
				<corners   android:radius = "15dip"   />   
				<gradient   
				android:startColor = "#ff4990cc"   
				android:centerColor = "#ff77acea"   
				android:centerY = "0.75"   
				android:endColor = "#ff3862ab"   
				android:angle = "270"   
				/>   
			</shape >   
		</clip >   
	</item >     
</layer-list> 

Final thumb is (use png)

<?xml version="1.0" encoding="utf-8"?>    
<selector xmlns:android="http://schemas.android.com/apk/res/android">
   <item android:drawable="@drawable/thumb" />
</selector>

and another method set thumb is 

<? xml version = "1.0" encoding = "UTF-8" ?>   
< selector xmlns:android = "http://schemas.android.com/apk/res/android" >         
       
     <!--pressed-->   
     < item   
         android:state_focused = "true"   
         android:state_pressed = "true"   
         android:drawable = "@drawable/thumb_pressed" />         
     <!--normal-->   
     < item   
         android:state_focused = "false"   
         android:state_pressed = "false"   
         android:drawable = "@drawable/thumb_normal" />               
     <!--focused-->   
     < item   
         android:state_focused = "true"   
         android:state_pressed = "false"               
         android:drawable = "@drawable/thumb_focused" />                   
</ selector >