Well, the question is rather simple - how can i handle left/right/middle click, wheel and (!)hover move in android 2/3/4.
I've been digging on this topic and found the following
Help me please to understand how i can handle bluetooth and usb mouse in most simple and right way in each version of android. Or say its impossible.
UPD2: seems like USB Host only in 3.1+, while USB Accessory useless for this task
These are my findings:
For Api Level < 9:
KeyEvent
with KeyEvent.KEYCODE_BACK
. No way to distinguish between actual "Back" presses and secondary button presses.For Api Level 9+:
MotionEvent.getSource()
. I use this one to detect if input is from mouse.KeyEvent
with KeyEvent.KEYCODE_BACK
. On some devices the KeyEvent.getSource()
returns InputDevice.SOURCE_MOUSE
, so secondary button detection works in some cases.For Api Level 12+:
OnGenericMotionListener
has been added. I use this one to detect mouse moves with ACTION_HOVER_MOVE
and wheel changes with ACTION_SCROLL
.For Api Level 14+:
MotionEvent.getButtonState()
. I track this one to distinguish if a primary, secondary, tertiary mouse button is pressed when the MotionEvent.getActionMasked()
is ACTION_MOVE
, ACTION_DOWN
or ACTION_UP
.I haven't looked into Api Level 15/16 or the tool type, because I'm able to track all mouse events with what I described above. Would be interesting if anybody has additional information or if I' missing out with 15/16/tooltypes.