Extend Android Bluetooth Discoverability

Question

I am writing an application that relies on the Android device (for my current testing purposes an HTC Evo 4G and several original Motorola Droids) being discoverable via bluetoo

Answer 1

There is bluetooth DiscoverableTimeout value besides Android timeout.

Usually, DiscoverableTimeout is set in file /system/etc/bluetooth/main.conf to 120 .

You should write

DiscoverableTimeout = 0

in /system/etc/bluetooth/main.conf to disable bluetooth timeout. This will allow you to extend Android timeout over than 120 sec.

Answer 2

It appears to be a bug:

Issue 15486: Bluetooth Adapter.EXTRA DISCOVERABLE not obeyed http://code.google.com/p/android/issues/detail?id=15486

Issue 13361: BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION intent Extra does not extend 120 sec discovery interval http://code.google.com/p/android/issues/detail?id=13361

First reported Dec 22, 2010, still listed as 'new' status, so I wouldn't expect this to be fixed.