GDG Algiers DevFest 2013 Cool AndroidLibs

Android, TDD, Picasso, Robolectric, FEST, OkHTTP

The source code is here:

Android App
https://github.com/nhachicha/GDGDevFestAlgiers2013Android

Backend
https://github.com/nhachicha/GoogleDevFest2013Algiers

Transcript

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/