Android Overview - Lanzamiento GDG Ciudad del Este

2. Mobile Software Developer at Wigo Creative

3. Android Studio
IDE Oficial
2.1.1 Stable (11 de May 2016)
Requisitos
Linux (GNOME o KDE), Mac y Windows
JDK (Java Development Kit) 6 o superior
Mucha memoria, mínimo 2GB, recomendado 4GB #GDGcde

4. Android SDK

7. Android Studio - Desing

8. Realm.io - Base de Datos en Android
#GDGcde

9. Butterknife
Butter Knife
Field and method binding for Android
views
class ExampleActivity extends Activity {
@BindView(R.id.user) EditText username;
@BindView(R.id.pass) EditText password;
@BindString(R.string.login_error) String loginErrorMessage;
@OnClick(R.id.submit) void submit() {
}
@Override public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.simple_activity);
ButterKnife.bind(this);
}
}
#GDGcde
https://github.com/JakeWharton/butterknife

10. Consumir API Rest
public interface GitHubService {
@GET("users/{user}/repos")
Call<List<Repo>> listRepos(@Path("user") String user);
}
Retrofit retrofit = new Retrofit.Builder()
.baseUrl("https://api.github.com/")
.build();
GitHubService service =
retrofit.create(GitHubService.class);
Call<List<Repo>> repos = service.listRepos("octocat");
#GDGcde
Retrofit
A type-safe HTTP client for
Android and Java
Square

11. Procesador de Imágenes
Picasso.with(context)
.load(url)
.resize(50, 50)
.centerCrop()
.into(imageView)
#GDGcde
Square
Picasso
A powerful image downloading and
caching library for Android

12. EventBuss
#GDGcde
Square
Otto
An enhanced event bus with
emphasis on Android support
Bus bus = new Bus();
bus.post(new AnswerAvailableEvent(42));
@Subscribe public void
answerAvailable(AnswerAvailableEvent event) {
}
bus.register(this);

13. Manejar Logs
Timber
A logger with a small, extensible API
which provides utility on top of
Android's normal Log class
https://github.com/JakeWharton/timber
Timber.d("Hello %s %s!", firstName);
Timber.tag("TagNameThatIsReallyReallyReallyLong"
).d("Hello %s %s!", firstName, lastName);
Example.java:35: Warning: Using 'Log' instead of
'Timber' [LogNotTimber]
Log.d("Greeting", "Hello " + firstName + " "
+ lastName + "!");

14. #GDGcde
Inyección de Dependencia Google
Dagger 2
Dagger is a fully static, compile-time
dependency injection framework for
both Java and Android. It is an
adaptation of an earlier version created
by Square and now maintained by
Google
class Thermosiphon implements Pump {
private final Heater heater;
@Inject
Thermosiphon(Heater heater) {
this.heater = heater;
}
}
class CoffeeMaker {
@Inject Heater heater;
@Inject Pump pump;
}

15. #GDGcde
Programación Reactiva
RxJava
A library for composing asynchronous
and event-based programs using
observable sequences for the Java VM
@GET("ribots") Observable<List<Ribot>> getRibots();
Observable<List<Ribot>> getRibots();
mSubscription = mDataManager.getRibots()
.observeOn(AndroidSchedulers.mainThread())
.subscribeOn(Schedulers.io())
.subscribe(new Subscriber<List<Ribot>>() {
@Override
public void onCompleted() {
}
@Override
public void onError(Throwable e) {
}
@Override
public void onNext(List<Ribot> ribots) {
}
});

16. #GDGcde
Testes en Android
Espresso
Functional Test
JUnit
Mockito
Unit Test
Roboelectric
Test-Drive Your Android
Code

17. Arquitectura MVP
fuente: https://github.com/ribot/android-boilerplate

18. Muchas Gracias
GitHub - rorogarcete