Android TV - detecting remote control coloured buttons

[ibellingham]

Hi all

New to this excellent platform, and perhaps a tricky question.

I'm using the ceefax demo app on my android TV, which is such a blast from the past. However, I'd like to adapt the program so it detects the red, Green, Yellow and blue buttons from the remote, as it looks like they would control the "next page" or shortcuts shown onscreen in the ceefax program.

Does anyone have a hint on what I would need to change in the ceefax app to detect these buttons please?

Many thanks
Ian

[Richard Russell]

Does anyone have a hint on what I would need to change in the ceefax app to detect these buttons please?

It all depends on what Android on your TV does with those buttons (if anything).

Run the supplied program about.bbc and press each of those buttons; if they are being recognised the associated positive INKEY code will be displayed in the top left-hand corner, and the associated negative INKEY code (if any) in the top right-hand corner.

But don't be too surprised if they're not recognised at all; I'm not sure that I've seen any SDL2 key constants for them.

[Richard Russell]

But don't be too surprised if they're not recognised at all; I'm not sure that I've seen any SDL2 key constants for them.

Here is the list of scancodes recognised by SDL2. As I feared there is no mention of the coloured buttons there; that doesn't mean they definitely aren't going to be recognised, but it's not promising.

[Richard Russell]

It's not directly relevant to the OP's question, I know, but here is how the various buttons on the Amazon Fire TV remote map to the controls in Ceefax.bbc:

firetv.jpg

[ibellingham]

Thanks for the advice, really appreciated. I'll use the about.bbc code to see if the buttons are recognised, and if not can adapt the ceefax code to buttons that are recognised.