Very bumpy group scrolling on Android tablets

Ender Nafi Elekcioglu endernafi at gmail.com
Tue Dec 10 13:38:40 EST 2013


Exactly same thing, on iOS 7 {all devices} and iOS 6 {iPod Touch 4}…
3 top level groups on 3 different cards, layerMode’s are “scrolling”; 
1 horizontal scrolling, 20 ~ 40 {random assign on every launch} referenced images;
2 vertical scrolling, 122 referenced images.

But I don’t remember same behavior prior LiveCode 6.1 and 6.5; maybe there was but I don’t remember.



~ Ender Nafi


On December 10, 2013 at 17:21:57, Mark Schonewille (m.schonewille at economy-x-talk.com) wrote:

Hi,  

I'm having a problem with scrolling groups using the native scroller on  
Android devices (and possibly iOS devices). The group contains  
approximately 100 images and 100 buttons. The formattedWidth is  
approximately 2500 pixels.  

When I start scrolling the group horizontally, the first time I scroll  
it till the end is extremely bumpy. Every time, the Android tablet will  
warn me, saying that the app is frozen and asking me to force-quit or  
wait. Once I have managed to scroll till the end one time, everything  
works perfectly smoothly.  

When I leave the card and come back to it, it all starts from the  
beginning again. I have to scroll till the end to obtain smooth  
scrolling again.  

I have added a handler that scrolls the group till the end and back  
after the openCard handler has finished running and I wait 50 millisecs  
with messages before I set the hScroll of the group to 0 again.  

I have tried every possible combination of layermodes, changing the  
layermodes of buttons, images and the group (9 different combinations).  
Nothing fixes the problem.  

Does anyone else have this bumpy experience with scrolling groups? Is  
there a solution?  

--  
Best regards,  

Mark Schonewille  

Economy-x-Talk Consulting and Software Engineering  
Homepage: http://economy-x-talk.com  
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