It looks a better way is to make a l2cap connection and look at the exception.
On Mar 26, 2:47 am, ehpaul <hansp...@gmail.com> wrote: > So basically I will have a background thread that periodically tried > to connec and immediate disconnect? > > On Mar 25, 4:35 pm, Kristopher Micinski <krismicin...@gmail.com> > wrote: > > > > > > > > > On Fri, Mar 25, 2011 at 4:53 AM, ehpaul <hansp...@gmail.com> wrote: > > > Hello, I am writing an android program that I need to know when a > > > bluetooth device (I know the Mac) is in range. The program also needs > > > to be aware when the device is not in range. Is there any way to do > > > this without establishing a connection? > > > Not that I've seen from the Bluetooth API exposed to the user. I don't > > understand the underlying protocol horribly well, but you need to actually > > scan for the uuid using SDP, which requires a call to the API. > > > > When the device is in range, I am able to call > > > BluetoothAdapter.getRemoteDevice and retrieve the friendly name. But > > > when I am not in range, it seems this information is cached. I was > > > thinking if I can use the friendly name as an indicator whether the > > > device is within range (i.e If friendly name is not null, then it's in > > > range). I am certain there is better way to do this. But it seems the > > > only way is to establishing a connection. > > > I don't think there is a better way, at least with the current API. Unless > > by better way you mean a more elaborate synchronization mechanism or > > something like that. But yes, I think at least from the API exposed by the > > android system, you have to do polling. > > > (I wanted to do what you described too, I think it's a common thing, but > > perhaps not the anticipated use of BT and / or the android API.) > > > Kris -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
