There seems to be a major issue with the charting library on Android 4.x, with versions 1.7.x
After upgrading my app form 1.5.x to 1.7.1 my users are reporting they are no longer seeing charts in the chart activity. Everything loads and is instantiated, but the chart is not drawn and a blank canvas is displayed. No exceptions or other erros in the logs. Everyting looks peachy, nothing renders. I can reproduce this consistenly on Android 4.0.3 to 4.1.1 (x86 and arm), but none of the later revisions, starting with 4.2 onwards.
Here’s a screenshot from Android 4.1.1 on Genymotion:
That greyish blob is where the chart should be, like this (this is Android 4.2.2 on Genymotion):