title: How to tell if the sdcard is mounted in Android?
body: <p>I'm working on an Android application that needs to look at what images a user has stored.  The problem is that if the user has the sdcard mounted via the USB cable, I can't read the list of images on the disk.</p>
  
  <p>Does anyone know of a way to tell if the usb is mounted so that I could just pop up a message informing the user that it won't work?</p>