I had the same problem. I created a jQuery mobile page with Google visualization. This seems to work well in the browser. Then I used Phonegap to deploy it on Android, and the charts did not work. The reason for this is that Android Webkit in earlier versions cannot handle SVG, and Google Visualization uses SVG for graphs.
Now I'm using JQPlot , and the charts work well in the Android / Phonegap version.
Edwin
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