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I have only three buttons on my Bluetooth helmet: VOL+ VOL- ON (which is on/pairing button and it might drop the call as well)

Would be nice if the Bluetooth controls were configurable in such a way I could skip to next track with the ON button or with a combination of volume buttons (E.G. double press VOL+) my players support Bluetooth controls, but I presume they work with the standard NEXT button.

Is there a way to achieve this with Android 6?

EDIT: In my case it will never work as the device is not sending ANY event to the phone, but the question might be useful for others in similar scenario.

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  • You should be able to modify a corresponding keylayout file in /system/usr/keylayout to map the standard bluetooth keys in a way you want, though I didn't verify that myself. Double-pressing (or any key combo) on the other hand seems impossible unless the hardware itself is made to output a keyevent on that combo.
    – Andy Yan
    Commented May 20, 2017 at 12:10
  • @AndyYan I might be able to remap the ON key as I just use it to turn it on. Thanks, I will give it a try. Do you need root access to modify that file?
    – user4388177
    Commented May 22, 2017 at 7:25
  • Definitely. Also, if you mean the power-on key of the headset, it might not generate a keyevent and send it to the device, so Android can't manage its behaviour.
    – Andy Yan
    Commented May 22, 2017 at 7:55
  • @AndyYan thought about it, but I'm hoping it does for other purposes.
    – user4388177
    Commented May 22, 2017 at 8:00

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Maybe I'm a bit late to the party. I have a bluetooth headset with only three buttons too. BUT, if I long press the volume up button, it generates a next track event, and the volume down button generates a previous track event.

Sadly I could not figure out how to remap these events (I would like to take a photo instead of next track event).

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