I would like to show some kind of alert/notification if there is a bluetooth device nearby. At the moment my solution is to do the discovery every minute, but is there a more sophisticated way? (Like a BroadcastReceiver)
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No there isn't.. You will have to perform discovery in your app or manually to discover devices

Dennis Mathews
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Agree with Dennis. Unless you perform device discovery from your app, you won't be able to know the devices near to you.

AndroDev
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