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Customer‘s Choice Let the user decide, which is the best solution

moosecon | 07.03.2013 | Hasan Hosgel

About me

Hasan Hosgel Twitter: @alosdev Github: alosdev Google+: Hasan Hosgel Slideshare: hosgel developer @ ImmobilienScout24

moosecon 2013 | Customer‘s Choice | Hasan Hosgel Page 2

Agile Scenario


The Product Owner defines following user story: „As a user I want to purchase the products on a shopping card with a click on a button.“

Source: http://www.flickr.com/photos/europedistrict/4292951182/

First design


Design Variants


User Test

moosecon 2013 | Customer‘s Choice | Hasan Hosgel page6

Source: http://www.flickr.com/photos/lwaldal/4900501706/

User Test Results


Source: http://www.flickr.com/photos/couragextoxlive/3054488331/


Source: http://www.flickr.com/photos/mkamp/2429091134/

What now?

What now? What do we normally in the web?


Source: http://www.flickr.com/photos/mkamp/2429091134/


Source: http://www.flickr.com/photos/8047705@N02/5366637592/

Make an AB-Test

AB-Test for Android


You have an application, which is probably publicly available. Send an amount of users to another variant than the normal one.

è Depending on success ratio you have the best suiting solution.

The Development


Source: http://www.flickr.com/photos/geminidustin/275375865/

Developer’s Todo List


●  Create switches depending on the business logic ●  Create a proprietary solution

"   Not reusable

●  Publish application "   Waiting for the results

●  Remove switches and republish application "   Waiting that everybody updates to the new version

Smarter Solution The library Customer’s Choice with a common approach

Customer’s Coice


A lightweight Open Source Android library making simple AB-Tests in an application, which can be configured over the network. Possible AB-Tests variants: ●  For layouts and positions ●  For colors ●  For workflows ●  For texts https://github.com/alosdev/CustomersChoice

Usage


●  Add the library (*.jar) to your project

●  Configure your switch based on the variant " CustomersChoice.getVariant(context,“VariantName”);

●  When you reach your expected goal, report it " CustomersChoice.reachesGoal(“VariantName”);

●  done

Usage


●  Will an exception be raised?

Usage


●  Will an exception be raised? "   No

Usage


●  Will an exception be raised? "   No ●  Will it have full functionality?

Usage



"   Not really

Usage



"   Not really ●  Why?

Usage



"   Not really ●  Why?

"   It is not configured, therefore #getVariant(String) will always return variant 1 for the given variant name

Configuration of Variants


●  Through code ●  JSON String in resources ●  Configuration file on SD card ●  Configuration file in the network with standard caching

mechanism, like Etag- and Modified Since Header

●  For testing purposes you can overwrite a variant with a broadcast intent

Variant’s Attributes


●  name: String (required) ●  startTime: Integer in Milliseconds ●  endTime: Integer in Milliseconds ●  spreading: Integer array for ratio of different variants ●  reset: Boolean for resetting the current value

{“variants”:[{!

!“name”:”VariantName”, “startTime”:768997,!

!“endTime”:1022222, ”spreading”:[1,2,1],!

!“reset”:true}, {…}!

,…]}!!

Global Attribute: resetAll – Boolean for resetting all variants

Extensibility


You can write custom plugins for: ●  Logging ●  Reporting

You can fork the library on Github, make your changes and send a pull request. https://github.com/alosdev/CustomersChoice

Demo time Showing code samples

Demo Application


Attention


source: http://i.imgur.com/h2JClux.jpg

Always make clear what and how to report for gaining the results you need. Otherwise you can get a comparison like the diagram.

Q & A


Source: http://www.flickr.com/photos/21496790@N06/5065834411/

www.immobilienscout24.de www.immobilienscout24.de

Thanks for your attention! We are hiring! Contact: Hasan Hosgel Twitter: @alosdev Github: alosdev

Customer‘s Choice Repo: https://github.com/alosdev/CustomersChoice SlideShare: http://de.slideshare.net/hosgel/moosecon-2013-customerschoice

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