This is a simple example showing how to draw Arcs in android, You can use this to create piecharts or someother similar thing you want. Here we have 3 classes. 1. GraphicsActivity.java 2. MainActivity.java 3. PictureLayout.java GraphicsActivity.java PictureLayout.java MainActivity.java Download the complete source code from here.
Here is a way to get the number of children in a displayGroup in corona. Each children ca be accessed via the child index.