Presenting some cool libs from http://square.github.io/ to help you with developing and testing your Android. The source code is here: Android App https://github.com/nhachicha/GDGDevFestAlgiers2013Android Backend https://github.com/nhachicha/GoogleDevFest2013Algiers

1. Cool Open Source Libs
Nabil HACHICHA
GDG DevFest 2013 Algiers

2. Why Open Source?
● Better quality
○ Developed by many passionate developers
○ Innovation and enhancements over time
● Open standards & interoperability
● It’s hard to develop without it

3. Use case
● Develop & test a small app (Employees list)

4. Use case
Architecture
Request content from network

5. Use case
Architecture
ListView Adapter, based on a
simple POJO

6. Use case
Architecture
Fragment holding our ListView

7. Use case
Architecture
Parse HTML using Xpath

8. OkHttp
● Efficient Http client, based on java.net.
HttpURLConnection or Apache HttpClient
● Can also be used as as the transport layer
for Volley

9. OkHttp
● SPDY support, allows all requests to the
same host to share a socket.
● Transparent GZIP
● Silently recover from common connection
problems
● Recovers from problematic proxy servers
and failed SSL handshakes
● Connection pooling reduces request latency
(if SPDY isn’t available)

10. OkHttp
● SPDY support, allows all requests to the
same host to share a socket.
● Transparent GZIP
● Silently recover from common connection
problems
● Recovers from problematic proxy servers
and failed SSL handshakes
● Connection pooling reduces request latency
(if SPDY isn’t available)

11. OkHttp
● SPDY support, allows all requests to the
same host to share a socket.
● Transparent GZIP
● Silently recover from common connection
problems
● Recovers from problematic proxy servers
and failed SSL handshakes
● Connection pooling reduces request latency
(if SPDY isn’t available)

12. OkHttp
● SPDY support, allows all requests to the
same host to share a socket.
● Transparent GZIP
● Silently recover from common connection
problems
● Recovers from problematic proxy servers
and failed SSL handshakes
● Connection pooling reduces request latency
(if SPDY isn’t available)

13. OkHttp
● SPDY support, allows all requests to the
same host to share a socket.
● Transparent GZIP
● Silently recover from common connection
problems
● Recovers from problematic proxy servers
and failed SSL handshakes
● Connection pooling reduces request latency
(if SPDY isn’t available)

14. Picasso
● A powerful image downloading and caching
library for Android

15. Picasso
● Handling ImageView recycling and download
cancelation in an adapter
● Complex image transformations with minimal
memory use.
● Automatic memory and disk caching.

16. Code

17. Testsing
Robolectric
Mockito
FEST

18. Robolectric
● Run Android tests inside JVM
● Instruct Robolectric to configure Android
differently
○ use a non-standard manifest file
○ use French resources on a sideways high-res
display (qualifiers)

19. Mockito
● Mocking framework, with fluent API syntaxe

20. FEST
● Fixtures for Easy Software Testing
● Simplify software testing by providing a
fluent Assertions
● Just use assertThat
● FEST Android, extension of FEST

21. FEST
Example:
● Regular JUNIT
assertEquals(View.GONE,view.getVisibility())
● Regular FEST
assertThat(view.getVisibility()).isEqualTo
(View.GONE)
● FEST Android
assertThat(view).isGone()

22. Code

23. TDD
● objc-TimesSquare
○ calendar view for your apps
● PonyDebugger
○ Remote network and data debugging for your native
iOS app using Chrome Developer Tools
● SocketRocket
○ WebSocket client library
● objc-mocktail
○ stub out HTTP servers in your Objective-C app.
● KIF
○ Keep It Functional - An iOS Functional Testing
Framework

24. Thanks!
Q&A
Links http://square.github.io/