在android中的按钮上绘制不同的颜色

Question

I have a transparent image its a circle style. I want to fill multiple colors to this image.It will look like circle graph. example 20% red color 30% blue remaing 50% black like that. Can any one give idea how to paint colors by using percentage. And later that image need to rotate like phone dailer.

Answer 1

JFreeChart can generate pie charts and can save the resultant chart to JPEG format. Here is an example of how to do so. Here is a 3D example .

There are more examples and documentation available in the developers guide.

Other charting libraries which generate piecharts:

• Charts4J
• EasyCharts (Commercial)

This one is taken from here .