title: Android and achartengine: resetting chart values for multiple uses
body: <p>I have an application that draws a dynamic chart and when it's done it saves some data and lets the user exit. (So there are multiple activities). Once the user exits, I want them to be able to come back and let the charts dynamically redraw themselves from 0. But for some reason, the chart always continues from the value where it left of. </p>
  
  <p>Here's what I tried:</p>
  
  <ol>
  <li><p>Clearing the XYSeries by calling clear(). Also, removed the series from my XYMultipleSeriesDataset, and cleared the Text Labels on my XYMultipleSeriesRenderer. Still, the graph continues where it left off.</p></li>
  <li><p>Calling onDestroy() to get rid of all saved data. This worked to clear the chart, but when the user chose to exit, the app crashed because for some odd reason, the activity I was killing tried to recreate itself. When I tried onDestroy() together with finish(), there was no crash, but the graph saved it's data from the last run.</p></li>
  <li><p>Calling super.onCreate(null) to avoid the savedInstanceState. The graph still saved it's data.</p></li>
  </ol>
  
  <p>Can anyone help me please? Let me know if I need to post my code or anything else!</p>
  
  <p>Thank you in advance!</p>