title: How to keep android device log from not being cleared?
body: <p>I want to dump all logs out to test a long usage of my app, maybe 2-3 days, but the logs seem to be cleared out while running after a long time.</p>
  
  <p>How can I keep the logs?</p>
  
  <p>I do not want to connect my device with eclipse all the day, I want the log just keep for me, like store it in the sd card for further check.</p>