Apps Dev 101 - Bristol Uni

Presentation as part of the Guest lecture series at Bristol University as part of the Computer Science year 2 and Masters

Transcript

1. Apps Dev 101
   Bristol Uni: Nov 2014
   Scott Alexander-Bown
   @scottyab
   Slides: https://speakerdeck.com/scottyab
   

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2. Scott Alexander-Bown
   ●  Senior Developer @intohand (Bath)
   ●  Co-author Android Security Cookbook
   ●  Co-founder SWmobile meetup group
   ○  meetup.com/swmobile
   

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3. 101
   •  Why I love app dev
   •  Getting start
   •  Development
   •  Ecosystem
   •  Development environment
   •  Further reading / resources
   •  Alternatives to native
   •  Testing
   •  Tips
   •  Building apps
   •  Getting hired
   

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4. What I love about app development
   •  App/mobile is now mainstream
   •  Wearables
   •  Embedded
   •  New stuff
   •  Skills
   •  Devices
   •  Yearly update of mobile platforms
   •  Software that’s used by millions world wide
   •  No barriers and lots of cloud API’s
   

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5. Fan boy?
   FYI: That’s not me
   

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6. • Who is your audience?
   • What problem are you solving?
   Getting started…
   

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7. Design
   

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8. Sketch it
   

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9. Wire framing
   

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10. App development
    

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11. Focus: iOS & Android
    

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12. Android in 60 seconds
    •  Open source
    •  Linux based
    •  Java
    •  Permissions
    •  Resources framework
    o  i.e build for variety
    •  Side load apps
    

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13. Fragmentation???
    This. Is. Differentiation!!!
    

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14. What I love about Android
    

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15. Development Tools
    •  Eclipse - Android Developer Tools plugin
    •  Build system: Ant
    •  Android Studio
    •  Build system: Gradle
    •  Xcode
    •  *Required* Mac
    

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16. iOS in 60 seconds
    •  Objective C and Swift
    •  Mac (Mavericks)
    •  Xcode
    •  Storyboards
    

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17. Ecosystem
    http://www.idc.com/prodserv/smartphone-os-market-share.jsp
    *Global*
    Q2 2014:
    84.7% Android
    11.7% iOS
    2.5% Windows
    0.5% Blackberry
    0.7% other
    

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18. Ecosystem: Playstore
    •  $25 developer registration fee
    •  No approval
    •  Alpha and Beta distribution
    •  Staggered distribution
    •  Automated security testing/monitoring
    •  Alternative app stores
    

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19. Ecosystem: App Store
    •  $100 yearly developer fee
    •  Approval (not as bad as people say)
    •  Walled garden
    •  Beta (via Test flight)
    •  Paid apps do better
    

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20. Getting help / further reading
    •  Android docs, training & samples
    •  Androiddevweekly.com
    •  Videos
    o  Android course (Udacity - ud853)
    o  DevBytes (YouTube)
    o  ADiA (YouTube)
    o  Google IO (YouTube)
    •  Busy coders guide to Android
    o  by Mark Murphy
    

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21. Getting help / further reading
    •  iOS docs, training & samples
    •  http://developer.apple.com
    •  https://developer.apple.com/swift/blog
    •  Stanford iOS course
    •  WWDC videos
    

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22. Alternatives to Native
    

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23. •  Mobile web / Responsive web
    •  Cross platform
    •  PhoneGap / Cordova
    •  Html 5/js/css wrapped in web view
    •  Plugins (camera, gps etc)
    •  Xamarin (free for students)
    •  C#
    •  Compiled to Native
    Alternatives to Native
    

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24. Testing
    •  3G and Wifi
    •  Use emulators
    •  But use real devices
    •  Beta test
    •  Friends
    •  Family
    •  Helpful customers
    

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25. Testing
    •  Hardware
    o  Last year flagship
    •  Emulator
    o  GenyMotion.com
    •  Services
    o  Errorlytics - Crashlytics
    o  Crowd source bug testing - UTest.com
    o  Cloud based UI testing - TestDroid.com
    

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26. Moto G
    

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27. •  Who is your audience?
    •  What problem are you solving?
    •  Wire frame before coding
    •  Lock to portrait
    •  Invest in quality app icon (elance, odesk etc)
    •  Beta test on friends/family
    •  Integrate Crashlytics and Analytics (i.e Flurry)
    Wrap up and tips …
    

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28. Tip: Open source community
    

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29. Tip: Backend as a Service
    •  Login with facebook and/or Twitter
    •  User management
    •  Data storage
    o  save and sync data objects
    o  files (large files)
    •  Analytics
    •  Push messaging
    

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30. Tip: watch out for…
    

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31. Tip: Keep it simple
    

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32. Thanks for listening
    CC BY-SA 2.0 Kris Krug
    

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33. Q&A | Contact | Feedback
    ●  Slides: https://speakerdeck.com/scottyab
    ●  dev@scottyab.com
    ●  meetup.com/swmobile
    ●  github/scottyab
    ●  @scottyab
    

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34. How to get hired (IMO)
    •  Enthusiasm for mobile (and development)
    •  Example work (no excuses)
    •  Uni project
    •  Hack-a-thon
    •  Contribute to community
    •  Stackoverflow
    •  Github
    •  No bullshit!
    

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35. Android Win
    o  Device choice
    o  Customisation
    o  True background
    tasks
    o  NFC
    o  Resources
    framework
    iOS Win
    •  Limited devices
    •  UI consistency
    •  Users upgrade to
    latest OS
    •  Clients, Managers,
    Designers have/
    know them
    •  Paid apps do better
    Vs iOS
    

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