Touch event on overlapping bittons

Getting Started Newbie Questions
#1

I have a button that after being touch, brings up a tableView. As the first button position on top of the tableView after being touched, triggers event of the tableView as well. I tried to put “ended” phase so only brings up the tableView after disappearing the button but no luck. Is a work around it (preferably not a timer delay) or I have to use different positions for these two?

local function ProjectList( event ) print(event.phase) if ( "ended" == event.phase ) then print(event.phase)     recordGroup:removeSelf() tableView.isVisible=true end end
#2

Hi @af6,

This is expected behavior unless you “return true” from the button listener, to prevent the touch from propagating through to object(s) behind. Please see this guide for details:

https://docs.coronalabs.com/guide/events/touchMultitouch/index.html

Take care,

Brent

#3

I added that but still both are triggered.

local function ProjectList( event ) print(event.phase) if ( "ended" == event.phase ) then print(event.phase)     recordGroup:removeSelf() tableView.isVisible=true end return true end
#4

Hi @af6,

When you say it “triggers the tableView”, what exactly does it do? Does it send an event to a particular tableView row? Or does it make the tableView scroll?

Brent

#5

Yes Brent. As you see the function makes the tableview visible. But also triggers the event as you have touched the rows. Return true doesn’t make any difference.

#6

Hi @amirfarazmand,

I know you want to avoid the timer method, but how about a compromise? Show the tableView immediately (no timer delay), but set it as “locked” for a short timer delay (say 50-100 milliseconds). Then after that timer triggers, unlock it… this should prevent you getting a touch response that you don’t want/need.

https://docs.coronalabs.com/api/type/TableViewWidget/setIsLocked.html

Best regards,

Brent

#7

Hi @af6,

This is expected behavior unless you “return true” from the button listener, to prevent the touch from propagating through to object(s) behind. Please see this guide for details:

https://docs.coronalabs.com/guide/events/touchMultitouch/index.html

Take care,

Brent

#8

I added that but still both are triggered.

local function ProjectList( event ) print(event.phase) if ( "ended" == event.phase ) then print(event.phase)     recordGroup:removeSelf() tableView.isVisible=true end return true end
#9

Hi @af6,

When you say it “triggers the tableView”, what exactly does it do? Does it send an event to a particular tableView row? Or does it make the tableView scroll?

Brent

#10

Yes Brent. As you see the function makes the tableview visible. But also triggers the event as you have touched the rows. Return true doesn’t make any difference.

#11

Hi @amirfarazmand,

I know you want to avoid the timer method, but how about a compromise? Show the tableView immediately (no timer delay), but set it as “locked” for a short timer delay (say 50-100 milliseconds). Then after that timer triggers, unlock it… this should prevent you getting a touch response that you don’t want/need.

https://docs.coronalabs.com/api/type/TableViewWidget/setIsLocked.html

Best regards,

Brent