SlideShare a Scribd company logo
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                   manifest
FALLBACK:                       • Declared inside the <html> tag
offline.html



localStorage.setitem("myKey",
"My value");                    LocalStorage :
localStorage.setitem("myKey",   • Simple key/value storage
"{my json structure");          • Simple API
localStorage.getitem['myKey']




                                                             6
7
9


    8
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
11
• 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 app


Phonegap 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

  • 1. Building Mobile Web Apps with Grails Sébastien Blanc Sopra Group
  • 2. 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
  • 3. What is a Mobile Web App ? 4 3
  • 6. CACHE: Cache Manifest File : /css/screen.css /css/offline.css • Simple text file /js/screen.js • Served as text/cache- /img/logo.png manifest FALLBACK: • Declared inside the <html> tag offline.html localStorage.setitem("myKey", "My value"); LocalStorage : localStorage.setitem("myKey", • Simple key/value storage "{my json structure"); • Simple API localStorage.getitem['myKey'] 6
  • 7. 7
  • 8. 9 8
  • 9. 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
  • 10. ? 11 10
  • 11. 11
  • 12. • Official jQuery Product • Progressive Enhancement • Strong Community • Stable releases 12
  • 13. 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
  • 14. Grails & Mobile Web Apps ★Grails is a Web Framework ★Resource handling ★Cache handling ★Dedicated plugins ★Deploy to the cloud in seconds 14
  • 15. What’s next ? jQuery Mobile Client Scaffolding plugin : generates a complete independent HTML5 app Phonegap Build plugin : get the native packages in one click ! 15
  • 16. Searching for the holy Grail 16

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