SeekBar

main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="fill_parent"
android:layout_height="fill_parent">
<TextView android:layout_width="fill_parent"
android:layout_height="wrap_content" android:text="@string/hello" />
<SeekBar android:id="@android:id/progress" style="?android:attr/progressBarStyleHorizontal"
android:progressDrawable="@drawable/seekbar_style" android:thumb="@drawable/seek"
android:layout_width="fill_parent" android:layout_height="23dip"
android:paddingLeft="25dip" android:paddingRight="25dip"
android:paddingBottom="4dip" />
</LinearLayout>

styles

<?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="10dip" />
<gradient android:startColor="#ffffffff"
android:centerColor="#ff000000" android:endColor="#ff808A87"
android:centerY="0.45" android:angle="270" />
</shape>
</item>
<item android:id="@android:id/progress">
<clip>
<shape>
<corners android:radius="10dip" />
<gradient android:startColor="#ffffffff"
android:centerColor="#ffFFFF00" android:endColor="#ffAABD00"
android:centerY="0.45" android:angle="270" />
</shape>
</clip>
</item>
</layer-list>

seek.xml

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