Best Practices in Mobile Development: Building Your First jQuery Mobile App
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By the end of 2012, it is expected that more than 80% of the world’s population will have access to a smartphone. Your library users will assume that your library can be accessible from anywhere, at any time, and on any device. Now is the time to be ready! During this hands-on webinar, you will: - learn the differences between native and web apps. - understand the various technologies (HTML, CSS, JavaScript) and how they work together to build mobile web apps. - gain hands-on experience using jQuery Mobile to develop a fully functional mobile-optimized web app. - have access to a free Web server so you can continue to work/test your project live on the Web. - continue to work with Jason and Chad so you can have a mentor during and after your project.
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Best Practices in Mobile Development: Building Your First jQuery Mobile App
- 1. Best Practices in Mobile Development: Building Your First jQuery Mobile App Handheld Librarian VI February 2, 2012 Jason A. Clark Head of Digital Access and Web Services Montana State University Libraries Chad Mairn Information Services Librarian/Adjunct Professor, St. Petersburg College Chief Technology Officer, Novare Library Services
- 2. Some housekeeping … FTP access/directory overview Host: Username: Password: Just in case, there is a Dropbox folder with the jQuery template available at http://dl.dropbox.com/u/9567522/jquery-mobile-template.zip You will have access to your directory for at least 2 weeks so you can finish and test your app on a variety of devices. I'll send everyone an e-mail before the directories are removed so you know when to get your files. A handout powered by Google Docs is available at http:// goo.gl/ki6lo We will try our best to answer questions during the presentation, but know that we'll keep track of all questions and answer them either at the end of today’s presentation or through a follow-up. In a few, fire up your text editor (or Dreamweaver etc.). Happy coding!
- 3. A Look Ahead... Native Apps versus Browser Apps jQuery Mobile - how it works Hands-on, building your first app Tips and trends about mobile
- 4. Mobile First as Strategy Google programmers are doing work on mobile applications first, because they are better apps and that's what top programmers want to develop. - Eric Schmidt, Google CEO http://www.eweek.com/c/a/Midmarket/Google-CEO-Eric-Schmidt-at-MWC-Mobile-First-694942/
- 5. Native Apps vs. Web/Browser Apps Source: http://www.webmonkey.com/2010/08/how-do-native-apps-and-web-apps-compare/ Issues Native apps Web apps Internet access Not required Required, except for apps written in HTML5 (offline capabilities) Shareable content (Twitter etc.) Only if it is built in to the app Web links can be shared. Social API’s allow 1-click posting Access to hardware sensors Yes: camera, gyroscope, microphone, compass, accelerometer, GPS Access thru browser is limited. Geolocation works! Development Build app for target platform (Android, iOS [Objective-C] etc.) Write/publish once using standard Web technologies, view it anywhere with URL. Speedy debugging and development. Distribution Most app stores require approval. No hassles.
- 6. Note: with Google Analytics you can determine how your user’s are accessing your mobile site (e.g., mobile devices, carriers, browsers , OS’s, screen resolution etc.) … can help one decide what to include in a mobile site.
- 7. “ Fundamentally, 'mobile' refers to the user, not the device or application.” Barbara Ballard Designing the Mobile User Experience
- 8. A live mobile web app... Demos: Terra - lifeonterra.com Terra mobile - lifeonterra.com/m/ Download: Mobile template - www.lib.montana.edu/~jason/files/m/ Explanation & blog post - http://wp.me/p8yR-1J Code Samples: http://www.lib.montana.edu/~jason/files.php
- 11. Making the Move to Mobile...
- 13. Editors and Tools You can use a simple text editor (e.g., Notepad) or a more sophisticated application (e.g., Dreamweaver). Adobe Device Central is part of Adobe’s CS. iUI: http://code.google.com/p/iui/ for iPhone. MIT Mobile Web Open Source Project http://sourceforge.net/projects/mitmobileweb/ Device detection? http://detectmobilebrowsers.mobi/ To see your browser's HTTP Headers. Works on mobile browsers. http://rabin.mobi/http Web Developer Toolbar in Firefox: Select Miscellaneous >>> Small Screen Rendering (260 px) >>> the layout will be reformatted to simulate rendering by a mobile browser.
- 14. Let’s build this… jQuery Mobile Template http://www.lib.montana.edu/~jason/files/touch-jquery/ Code walkthrough (codelab)
- 15. Tips and Trends Mobile Design 2. Mobile Development
- 16. The Future of Mobile App Development?
- 17. The Future of Mobile App Development? Web/Browser? Native Apps? “ Smarter browsers” = not required? Other?
- 18. Narrow your Focus Do a few things really well What are the core actions?
- 19. Know your Audience Run the Analytics Research for Mobile Browser Types
- 20. Learn from the Masters View Source -> m.flickr.com "Be Mobile" with User Agent Switcher https://addons.mozilla.org/en-US/firefox/addon/59/ http://woorkup.com/2010/01/10/best-practices-to-develop-perfect-websites-for-iphone-and-mobile-devices/
- 21. Study the Interface & Device Scalable Design Think Percentages 320px AND 480px
- 22. Study the Interface & Device Tactile navigation touch, pinch, spread, flick, spin (gyrometer) Apple recommends a minimum target size: 29px wide 44px tall
- 23. Speed FTW, Performance First Limit Images and Markup Limit HTML pages to 25KB to allow for cacheing "Minify" your scripts and CSS JSLint, CleanCSS Take Advantage of HTML5, CSS3 <!DOCTYPE html>
- 24. Testing and validation Page Speed in Firebug
- 25. W3C mobileOK Checker http://validator.w3.org/mobile/
- 26. Ready.mobi http://ready.mobi
- 27. Respect the URL Follow the "m" convention m.delicious.com OR lifeonterra.com/m/ Keep Categories (directories) Short It's a touch environment, not a typing environment.
- 28. Mobile Browsers = Cutting Edge WebKit Browser Engine Supports many HTML5 and CSS3 features Native app functionality geolocation offline storage web workers
- 29. Allow for User Choice Link to Full Site Sniff for User Agent – Detection To redirect, or not to redirect, that is the question
- 30. Know Mobile Design Conventions One Column Layout Whitespace is Your Friend Embrace an Economy of Language "Quick Visit" Architecture
- 31. Emulators/Simulators: dotMobi Emulator - http://mtld.mobi/emulator.php Opera Mini Simulator - http://www.opera.com/mobile/demo/ Mimic - emulates European and Japanese models: N400i and N505i. http://pukupi.com/post/2059 Android Emulator - http://developer.android.com/guide/developing/tools/emulator.html BlackBerry Device Simulators - https://www.blackberry.com/Downloads/entry.do?code=060AD92489947D410D897474079C1477 iPhone Dev Center: http://developer.apple.com/iphone/ Palm Pre - http://developer.palm.com/ Windows Mobile - http://msdn.microsoft.com/en-us/windowsmobile/default.aspx JAVA ME - Java Platform Micro Edition was termed J2ME. It is considered one of the most ubiquitous application platform for mobile devices. http://java.sun.com/javame/reference/apis.jsp
- 32. Mobile Development in Libraries Chad Haefele, Mobile Site Generator http://www.hiddenpeanuts.com/msg/ Jason Casden, WolfWalk at NCSU http://www.lib.ncsu.edu/dli/projects/wolfwalk/ Laurie Bridges and Kim Griggs http://ir.library.oregonstate.edu/jspui/handle/1957/16437
- 42. Mobile Screen Resolutions Android (Motorola Droid) 480x854 Android (MyTouch) 320x480 Android (Nexus One) 480x800 Apple iPhone 320x480 Apple iPad 1024x768 Palm Pre 320 x 480 Source: http://insideria.com/2010/05/building-web-sites-optimized-f.html
- 43. Contact Information Jason A. Clark Head of Digital Access and Web Services Montana State University Libraries [email_address] twitter.com/jaclark www.jasonclark.info Chad Mairn Information Services Librarian St. Petersburg College [email_address] twitter.com/cmairn