Check multi-keys press

[yaley]

Hi, i tried to use objc UIViewController to get key press with text field, but the problem is, if i press left arrow key first, and then press right arrow key, the right arrow key’s CustomViewController_pressesBegan_withEvent_ will not triggered, pls help?

[DOGGY]

@yaley Yes, sorry, as @cvp and my tries, using pygame module is not possible in Pythonista because Pythonista doesn’t have pygame Stash also cannot

[yaley]

@DOGGY It’s ok :)

[yaley]

@cvp oops that’s my wrong, but after changing it to True, it’s still not working, everything turns True, let me see the documentation carefully again.

After the key changed, the activeKey turns True, but then it will forever True, until next keyup

[cvp]

@yaley don't forget that presses is a kind of array with eventually multiple keys thus perhaps not only check [0]

[DOGGY]

@YaleY that would be a hard one…..

[yaley]

@cvp so what should i do now???? Can you show me the code with successful running?

[cvp]

@yaley said

Can you show me the code with successful running?

Ho no, you are further than me. I only try to think about it.
When you press the right arrow, your first key is still pressed?

[yaley]

@cvp yes, but the problem is when the second press joined CustomViewController_pressesChanged_withEvent_() didnt run about it

[yaley]

@cvp You’re method is correct, just i am stupid, i typed wrongly, i set the variable to True in the pressesEnded def

XD

[cvp]

@yaley right, just tested

[yaley]

Wait no, why??? Why my first test is correct and then the second test is not working?????

[cvp]

@yaley for me, changed not called
If you change something in a created class, restart Pythonista

[yaley]

@cvp here’s my code, I’ve tried to restart Pythonista

def CustomViewController_pressesBegan_withEvent_(_self, _cmd, _presses, event):
    global activeKeys
    presses = ObjCInstance(_presses).allObjects()
    keyCode = presses[0].key().keyCode()
    
    activeKeys[keyCode] = True
    
def CustomViewController_pressesEnded_withEvent_(_self, _cmd, _presses, event):
    global activeKeys
    presses = ObjCInstance(_presses).allObjects()
    keyCode = presses[0].key().keyCode()
    
    activeKeys[keyCode] = False
    
def CustomViewController_pressesChanged_withEvent_(_self, _cmd, _presses, event):
    global activeKeys
    presses = ObjCInstance(_presses).allObjects()
    keyCode = presses[0].keyCode()
    
    activeKeys[keyCode] = True

[cvp]

@yaley you should add some print in each method to check if called

[cvp]

@yaley said

keyCode = presses[0].keyCode()

Key() missing in changed

[cvp]

@yaley only began is called once with left arrow, second with right arrow

Thus, forget changed, and all is ok because two keys imply 2 calls to began

[yaley]

@cvp thanks it solved!!!

[yaley]

@cvp looks like i found the problem, if in the changed def, i set activeKeys[keyCode] = presses[0].key().keyCode() it doesn’t work, but if i set activeKeys[keyCode] = presses[0].keyCode() then it works :)

[cvp]

@yaley sorry, perhaps I (or my eyes) become too old, but I don't see the difference

[yaley]

@cvp no it’s my wrong again xD They’re absolutely no difference before, lol