Five Elements of Software Engineering for Mobile
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The document outlines five essential elements of software engineering for mobile applications, emphasizing the unique aspects of mobile development such as user behavior, technological choices, and methodologies. It also highlights the significance of user experience, the evolution and benefits of web APIs, and various tools that enhance development efficiency. The presentation underscores the substantial market potential for mobile app development, citing it as a $68 billion industry in 2013.
Five Elements of Software Engineering for Mobile
- 1. @ManfredBo 5 Elements of Software Engineering for Mobile Manfred Bortenschlager I work at 3scale.net Out-of-the-box API Management Imperial College March 24, 2014
- 2. @ManfredBo Overview 0. Why Mobile is Different 1. Technological Platform Choices 2. Users’ Experience 3. Methodologies 4. Web APIs 5. Tools
- 3. 0. Why Mobile is Different
- 4. @ManfredBo Difference: User Behaviour ● Inherently mobile ○ Limited cognitive resources, 4sec attention time span ● Limited hardware ○ Screen size, battery, bandwidth, CPU ○ 1sec delay ⇒ 16% customer satisfaction decrease ● Cost ○ Data transfer and data plans
- 7. Source: Tsahi Levent-Levi, http://www.flickr.com/photos/86979666@N00/7809646882
- 9. @ManfredBo Difference: User I/O ○ Multipoint-touch ○ Gestures and motion detection ○ Sensors (acceleration, tilt, GPS, compass) ○ Haptic feedback ○ Speech-to-text / text-to-speech ○ Camera (face recognition) ● No conventional I/O means
- 10. @ManfredBo Difference: Market Characteristics ● Ephemerality ● User acquisition / retention ● Distribution ● Business models ○ Revenue models
- 11. @ManfredBo Why is it worth thinking about these things at all?
- 12. “Mobile app development is a $68 billion industry (2013)“ GDP of Cuba 11m population Source: Vision Mobile, http://www.visionmobile.com/product/developer- economics-q1-2014-state-developer-nation/
- 13. Not even touched wearables, Internet-of-Things, or sensors, yet... Sources: http://www.catwig.com/google-glass-teardown/ http://edition.cnn.com/2013/05/02/travel/london-city-airport-internet-of-things/ http://www.libelium.com/wireless_sensor_networks_to_control_radiation_levels_geiger_counters/ And respective product sites. Cisco: $14.4tr market
- 14. 1. Technological Platform Choices
- 15. @ManfredBo Choices ● Native ● Web ● Hybrid ● Cross-platform ○ Appcelerator, Marmalade, PhoneGap/Cordova, Xamarin ...
- 17. @ManfredBo Specific Programming Idioms E.g.: Intents in Android Android-specific communication mechanism Allows asynchronous messaging between platform and app components, primarily to: 1. Start an activity 2. Start a service 3. Broadcast to other apps Image source, http://www.itcsolutions.eu/
- 19. @ManfredBo The Sum of Everything a User Experiences Source: Smashing Magazine, http://mobile.smashingmagazine.com/2012/07/12/elements-mobile-user-experience/
- 20. 3. Methodologies
- 23. @ManfredBo Customer Development See: “How to build a Startup” Udacity free online lecture by Berkeley Prof. Steve Blank https://www.udacity.com/course/ep245
- 24. Source: Alex Osterwalder, http://www.businessmodelgeneration.com/
- 25. @ManfredBo Revenue Models Which apps make more money? http://www.visionmobile.com/blog/2013/04/which-apps-make-more-money/
- 27. 4. Benefit of Web APIs
- 28. @ManfredBo What are Web APIs? APsdfAPI
- 29. @ManfredBo Evolution of APIs Current nb of APIs: 11,188
- 30. @ManfredBo Evolution of APIs Source: tuts+ http://code.tutsplus.com/articles/the-increasing-importance-of-apis-in-web-development--net-22368 (2011 data)
- 31. @ManfredBo Evolution of APIs Source: tuts+ http://code.tutsplus.com/articles/the-increasing-importance-of-apis-in-web-development--net-22368 (2011 data)
- 32. @ManfredBo Web APIs, REST ● REST = Representational State Transfer ● Stateless client/server communication protocol ● Architecture style entirely based on Web standards ○ HTTP, URL, XML/JSON ● Supports all CRUD operations ● OS/platform independent
- 33. @ManfredBo Practical REST Example Send HTTP verbs GET, POST, PUT, DELETE as URLs to a server. Example: Email verification API http://my.api-providers.webaddress.com/version/VerifyEmail ?UserID=<myUserID>&Password=<myPassword>&TheEmailToVerify= <email Address To Verify>&VerifyEmail.Timeout=<Time Out> App ID and App Key are often required too
- 34. @ManfredBo Practical Example: Android (1/3) Based on http://blog.strikeiron.com/bid/73189/Integrate-a-REST-API-into-Android-Application-in-less-than-15-minute
- 35. @ManfredBo Practical Example: Android (2/3)
- 36. @ManfredBo Practical Example: Android (3/3)
- 38. 5. Tools
- 39. @ManfredBo Developers who use tools make more money
- 40. @ManfredBo The Power of Tools Backend services, storage: Amazon, Dropbox, Kinvey, Parse Monetization: AdMob, InMobi Feature testing: Splitforce, Testflight Prototyping: AppGyver Prototyper, FluidUI Usability testing: UXCam Performance & crash reporting: Crittercism or BugSense User support: Helpshift
- 42. Take-aways
- 43. ➔ Understand and embrace the difference of mobile ➔ UX for mobile is much more than just (G)UI ➔ Include users soon and often ➔ Iterate often, focus on essentials ➔ Don’t reinvent the wheel -- use tools ➔ Enrich your app with Web APIs ➔ Massive potential -- go, grab it! Image Source http://www.entrepreneur.com/