Displaying a graph (not charts) in an android app

Question

I want to display a small (n < 50) undirected graph (not a chart) in an Activity. I did a bit of research and it looks like their are a couple of libraries to display charts, but none to display real graphs. So it looks like I need to roll out my own solution. My very rough plan looks like this:

• create and in memory representation of the graph
• layout the graph nodes and edges so it looks nice
• write a view that implements pinch and zoom
• draw the graph

Are their any libraries I could use to help in some of these steps (maybe except the first one, this is really simple). Especially the "layout" part is something I would like to avoid. The "looks nice" requirement is mostly optional as long as the graph is displayed somehow readable. but since I'm part time perfectionist I would love to have it in ;)

Dayflower

Can you add a little description here about the differences you need between a chart and a graph? – Virile

You may refer to GraphViz, which is ope source for ideas on graph layout. – Mantoman

Answer 1

I solved it eventually by using a WebView that displays a HTML page, that uses the Dracula Graph Library. I transfer the data to the WebView by a Java function that was called from Javascript (on page load) that encoded the data as JSON. Not fancy, but it worked!

Dayflower