Developing Mobile HTML5 Apps with Grails

Building Mobile Web Apps with Grails Sébastien Blanc Sopra Group

About me•34 years old, 2 children•50% french 50% dutch 100% geek Text•Software engineer working for Sopra Group•Follow me on twitter @sebi2706 2

What is a Mobile Web App ? 4 3

Size matters .... 4

Surviving ofﬂine 5

CACHE: Cache Manifest File :/css/screen.css/css/offline.css • Simple text ﬁle/js/screen.js • Served as text/cache-/img/logo.png manifestFALLBACK: • Declared inside the <html> tagoffline.htmllocalStorage.setitem("myKey","My value"); LocalStorage :localStorage.setitem("myKey", • Simple key/value storage"{my json structure"); • Simple APIlocalStorage.getitem[myKey] 6

Geolocation if(navigator.geolocation){ navigator.geolocation.getCurrentPosition( function(position){ var latitude = position.coords.latitude; var longitude = position.coords.longitude; var altitude = position.coords.altitude; } ); } 9

? 11 10

• Ofﬁcial jQuery Product• Progressive Enhancement• Strong Community• Stable releases 12

jQuery Mobile syntax <html> <body> <div data-role="page"> <div data-role="header"> <h1>Single page</h1> </div> <div data-role="content"> <p>This is a single page boilerplate template that you can copy to build your ﬁrst jQuery Mobile page. Each link or form from here will pull a new page in via Ajax to support the animated page transitions.</p> </div> <div data-role="footer"> <h4>Footer content</h4> </div> </div> </body> </html> 13

Grails & Mobile Web Apps★Grails is a Web Framework★Resource handling★Cache handling★Dedicated plugins★Deploy to the cloud in seconds 14

What’s next ?jQuery Mobile Client Scaffolding plugin : generates a complete independent HTML5 appPhonegap Build plugin : get the native packages in one click ! 15

Searching for the holy Grail 16

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Developing Mobile HTML5 Apps with Grails

by GR8Conf on Jun 10, 2012

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