ProgressBar 颜色的设置

转载自：http://blog.csdn.net/mars2639/article/details/6620836

布局文件代码：

<ProgressBar
android:id="@+id/progressbar"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:indeterminateDrawable="@drawable/progressbar"
/>

此XML文件新建在drawable目录下：文件名为：progressbar

<?xml version="1.0" encoding="utf-8"?>
<animated-rotate
xmlns:android="http://schemas.android.com/apk/res/android"
android:pivotX="50%" android:pivotY="50%"
android:fromDegrees="0"
android:toDegrees="360">

<shape
android:shape="ring"
android:innerRadiusRatio="3"
android:thicknessRatio="8"
android:useLevel="false">
<gradient
android:type="sweep"
android:useLevel="false"
android:startColor="#6BD3FF"
android:centerColor="#FF7121"
android:centerY="0.50"
android:endColor="#FFFF00" />
</shape>

</animated-rotate>

至于设置水平进度条的颜色:

<LinearLayout android:gravity="center"
android:orientation="horizontal"
android:padding="10dp"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<SeekBar android:layout_gravity="center" android:id="@android:id/progress"
android:paddingLeft="8.0dip" android:paddingRight="8.0dip"
android:paddingBottom="4.0dip" android:layout_width="fill_parent"
android:layout_height="wrap_content" android:maxHeight="2.0px"
android:progressDrawable="@drawable/progressbar_drawable" android:minHeight="2.0px"
android:thumb="@drawable/seekbar_thumb" style="?android:attr/progressBarStyleHorizontal" />
</LinearLayout>

progressbar_drawable.xml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="2.0dip" />
<gradient android:startColor="#ff000000" android:centerColor="#ff000000" android:endColor="#ff000000" android:angle="270.0" android:centerY="2.0"  />
</shape>
</item>
<item android:id="@android:id/progress">
<clip>
<shape>
<corners android:radius="2.0dip" />
<gradient android:startColor="#ff33b5e5" android:centerColor="#ff33b5e5" android:endColor="#ff33b5e5" android:angle="270.0" android:centerY="2.0"  />
</shape>
</clip>
</item>
</layer-list>