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?

[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

[yaley]

@cvp I’ve already changed it, read it again :D The difference is [0].key().keyCode() and [0].keyCode()

[yaley]

Wait, um, after i added print() the pressesChange is not activating

[cvp]

@yaley ok. And did you trace, sure that changed def is called?

Sorry: was typing while your previous post was coming

[yaley]

@cvp i dont think that that def was called :(

[cvp]

@yaley but do you really need it? The doc says it is called if you change something in your key press, like force. If you know which key is down and up, and when, you have all you need, haven't you?

[yaley]

Yep! Maybe…. No need!

[yaley]

@cvp But the main problem is just when arrow keys will happen, just like umm i give you an example:
I am detecting keys with ui.Textfield() And now i start pressing left arrow key. So in the input it goes left ( the selection bar ), but if the right arrow keys joined the right arrow key, the selection bar of input still goes left.

[yaley]

And, also, can vi.View().get_key_commands() and ui.View().key_command(sender) detect keyup? if can, then i can make