Welcome to the official BlackBerry Support Community Forums.

This is your resource to discuss support topics with your peers, and learn from each other.

inside custom component

Web and WebWorks Development

Thank you for visiting the BlackBerry Support Community Forums.

BlackBerry will be closing the BlackBerry Support Community Forums Device Forums on April 1st (Developers, see below)

BlackBerry remains committed to providing excellent customer support to our customers. We are delighted to direct you to the CrackBerry Forums, a well-established and thorough support channel, for continued BlackBerry support. Please visit http://forums.crackberry.com or http://crackberry.com/ask. You can also continue to visit BlackBerry Support or the BlackBerry Knowledge Base for official support options available for your BlackBerry Smartphone.

"When we launched CrackBerry.com 10 years ago, we set out to make it a fun and useful destination where BlackBerry Smartphone owners could share their excitement and learn to unleash the full potential of their BlackBerry. A decade later, the CrackBerry community is as active and passionate as ever and I know our knowledgeable members and volunteers will be excited to welcome and assist more BlackBerry owners with their questions."

- Kevin Michaluk, Founder, CrackBerry.com

Developers, for more information about the BlackBerry Developer Community please review Join the Conversation on the BlackBerry Developer Community Forums found on Inside BlackBerry.

New Contributor
Posts: 5
Registered: ‎07-10-2012
My Device: Playbook
My Carrier: 2.0

Slow performance app on webwork

I have developed App using Html5, javascript and css.


I am feteching 5-6 image form local which is dynamic based on category.


This App running fast on the desktop browser but after porting the App on playbook , performace is too slow.


Plase give me solution .







Posts: 314
Registered: ‎03-28-2012
My Device: Curve 9360, Playbook, BB10 Dev Alpha
My Carrier: TMN

Re: Slow performance app on webwork


How are you inserting the images on the page? Before the page loads or after? 1 at a time or all together?

Posts: 119
Registered: ‎05-27-2010
My Device: 9900
My Carrier: Vodafone NL

Re: Slow performance app on webwork

That's why performance must be a feature when building web applications.


Your computer browser is still between 30-1000 times faster as a browser on a mobile device.


Additionally you don't have the resources (memory ) to just stuff everything on a page. 

Page renders can be very expensive.


-> to check the performance, use the remote webinspector on the PlayBook to see the load times and render times.

This will give you a clue on why it might be so slow.


If you can, try to precache images (just cache them off-screen )

.loader { display: hidden; position:absolute / fixed; bottom:0; width:0; height:0; }


How big are your pictures ?


And in most cases you need to think about user experience, not whether or not something is slow, but how to guide the user through certain actions.


If it takes more time to navigate through the catagories, you either need to do it differently or let the user know you're working on it.


Do you try to load the images in page, or off-page (not visible, show when dom is ready ?)


@reumerd-- @BBDevGroupNL -- about me
If you like it, LIKE it ;-) ----- If it's solved, press solved ! --- If you solved it yourself, please let us know! We might have the same problem!