title: Programmatically get connected Wifi password?
body: <p>My app needs to communicate with a Sony Wifi camera. The user specifies the camera Wifi SSID and password, the app connects, takes a picture and retrieves it to the android device. When the app is done taking pictures, I want it to restore the Wifi connection (if any) that existed before the app was started. E.g. the user may have been connected to to a coffee shop hotspot when she starts the wifi camera app, and so the the app should automatically reconnect to the hotspot when it's done. </p>
  
  <p>To restore the pre-existing connection, the app needs to know the SSID - and also the password, I think.  It's easy for the app to determine the pre-existing SSID - just call WifiManager.getConnectionInfo().getSSID() before switching to the camera Wifi SSID. But how to get the pre-existing password? I don't want to require the user to re-enter that password. Is this functionality possible?</p>
  
  <p>Thanks,
  Tom</p>