Invitations over MQTT were handled by different code that always opened
the new game on top of any other open one. Use instead existing code
that puts up a notification instead where appropriate.
I'm fixing android client not showing stats for or allowing to disable
mqtt after it's added automatically to a game that connects
otherwise. Problem was that only the channel got the mqtt address
flag. So now add the flag for any type that's added.
Don't wait for user to tap one of the buttons. Instead notice when
scrolling becomes possible, and offer once per launch until user says
"hide" or clicks the don't-ask-again box.
This won't impact shipping code, but if during development I add then
remove a new INVITEMEANS I can crash with AIOOB trying to load by
ordinal. So check first.
It's simpler this way, and I'm tired of stuff not happening because the
OS chooses not to schedule e.g. an invitation send for minutes. Goal's
to be running BluetoothServerSocket.accept() as much as possible when
there are active BT games in play OR when the game's in the foreground.
If that's happening, sent invitations and moves will be received when
users expect. When there's no traffic and app isn't being brought to
foreground, backoff will ensure I don't try to run accept() too often.
FWIW, BTLE seems to offer a better way to do this (to have an app be
responsive to incoming invitations when it hasn't run in the foreground
in a while), but it requires users to accept FINE_LOCATION
permission. I'm hoping I can make this work to avoid asking for that
permission.
Add a single method to provide candidate devices; don't bother passing
bogus BT MAC addrs; let instance belonging to background-user start
communicating again when user becomes foreground.
I was comparing the wrong strings and so broke deleting known BT
devices. And wanted to see how often since I'd seen them updated, though
every 10 seconds is still 10 seconds.
Some devices unpair themselves and needed to stop being listed so user'd
know to fix. And my Nexus 5x is neither a PHONE nor a COMPUTER per BT,
so accept a larger range of BT classes when scanning.
