Press and hold
Posted on Wed, 2012-02-08 02:23
I'm trying to find a neat way to create and event when a user presses and holds for a couple of seconds on a UI object, which is different from just tapping.
I was thinking of creating an on touch event and creating a timer on the "began" phase and cancel the timer on the "ended" and "cancelled" events. The timer increments a counter value. For each call by that object to the handler which is not "began", "cancelled", or "ended" (not sure what to do with the "move" event) I check if the counter is greater than say 2 (meaning 2 seconds) and perform the action and cancel the timer.
Is this a good strategy or are there simpler way?
Thanks
Replies
Posted on Wed, 2012-02-08 05:32
#2
I did something like this:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 | local holdCount = 0 local holdTimer = nil local eventTarget = nil local function holdCountListener(event) holdCount = holdCount + 1 if holdCount > 0 then --do something with eventTarget timer.cancel( holdTimer ) end end local function onTap(event) if "began" == event.phase then holdTimer = timer.performWithDelay(1000, holdCountListener, 0) holdCount = 0 eventTarget = event end elseif "ended" == event.phase then timer.cancel( holdTimer ) if holdCount > 0 then --do somethig with eventTarget timer.cancel( holdTimer ) else --do something else with eventTarget end elseif "cancelled" == event.phase then timer.cancel( holdTimer ) end end |
It works but I don't like it...
Posted on Wed, 2012-02-08 05:33
#3
I'll try this too...
You can do something like this.