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Lessons Learned in Mobile Web App Development
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Brandon Keepers
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May 23, 2011
Programming
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Lessons Learned in Mobile Web App Development
Brandon Keepers
PRO
May 23, 2011
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Transcript
Ordered List Brandon Keepers Grand Rapids Web Development Group May
23, 2011 Lessons Learned in Mobile Web App Development
?
~6 months
The App
The App Static HTML
The App Static HTML CSS
The App Static HTML CSS JSON API
The App Static HTML CSS JSON API JavaScript
The App Static HTML CSS JSON API JavaScript JavaScript
The App Static HTML CSS JSON API JavaScript JavaScript JavaScript
CSS challenges
-webkit-* iOS Android Blackberry Palm Symbian
position: fixed;
Header Footer Scrollable Content
ader oter llable ntent
header { position:fixed; top:0; right:0; left:0; height:56px; } .content {
margin:56px 0 48px 0; } footer { position:fixed; bottom:0; right:0; left:0; height:56px; } fixed ader oter llable ntent
header { position:fixed; top:0; right:0; left:0; height:56px; } .content {
margin:56px 0 48px 0; } footer { position:fixed; bottom:0; right:0; left:0; height:56px; } fixed doesn’t w ork ader oter llable ntent
header { position: absolute; top:0; right:0; left:0; height:56px; } .content
{ position: absolute; top:56px; bottom: 48px; right:0; left:0; overflow: auto; } footer { position: absolute; bottom:0; right:0; left:0; height:56px; } absolute ader oter llable ntent
header { position: absolute; top:0; right:0; left:0; height:56px; } .content
{ position: absolute; top:56px; bottom: 48px; right:0; left:0; overflow: auto; } footer { position: absolute; bottom:0; right:0; left:0; height:56px; } absolute doesn’t w ork ader oter llable ntent
None
iScroll
START FINISH DEMO
START FINISH DEMO
CSS3 Effects
CSS3 Effects -webkit-box-shadow
CSS3 Effects -webkit-box-shadow background: -webkit-gradient(…)
CSS3 Effects -webkit-box-shadow background: -webkit-gradient(…) -webkit-transform
None
Acceleration Hardware
START FINISH DEMO
START FINISH DEMO
Solution No CSS3 fanciness No animation on Android
JavaScript challenges
Debugging is hard
None
None
None
Execution Priority iOS prioritizes UI Android prioritizes JavaScript
Organization Code
Controllers Views Views Models ?
$ find public/javascripts/ -type f | wc -l 70 $
du -sh public/javascripts/ 916K public/javascripts/
Concated & Minified 161K
Lessons Learned
Lessons Learned mobile devices are slow-ish
Lessons Learned mobile devices are slow-ish the browser can but
the device can’t
Lessons Learned mobile devices are slow-ish the browser can but
the device can’t lack of consistency across Android devices
Resources http://www.html5rocks.com/tutorials/speed/html5/ http://bit.ly/grwebdev-mobile
Ordered List Thank you! brandon@orderedlist.com @bkeepers Brandon Keepers Grand Rapids
Web Development Group May 23, 2011