title: Does turning on/off GPS broadcast the android.location.PROVIDERS_CHANGED message?
body: <p>On Froyo:</p>
  
  <p>When turning on and off the GPS, is the android.location.PROVIDERS_CHANGED message supposed to be broadcast? I have an application that turns the GPS on and off, and a listener is set for this message (to verify that the action occurred), and the listener is never called even though the GPS is being enable and disabled. Because I have to use a hack to programatically control the GPS, I'm wondering if I should be broadcasting this message myself.</p>
  
  <p>Launcher Pro is seeing that I'm toggling the state of the GPS, and it changes it's widget icons appropriately, so I'm not sure if I need to send the message. In which case the message is being sent and I'm not listening for the message properly (but if I send it myself the receiver does respond). Or I'm not listening for the correct message.</p>
  
  <p>On a related note, in which source code modules should I look to see when the PROVIDERS_CHANGED message is being broadcast?</p>