尝试沿着线的东西：

<shape xmlns:android="http://schemas.android.com/apk/res/android" 
       type="OvalShape" >
   <stroke android:width="5dp" android:color="#99104E8B"/>
   ....
</shape>

只要把这样的事情在一个XML文件中可绘制你的目录，并加载它，你会一个正常的图像。

Just put something like this in an XML file in you drawables directory and load it as you would a normal image.

请参阅ShapeDrawable在Android文档。

See ShapeDrawable in the Android Docs.