Développer une app Android en 2015

Retour d'expérience chez BlaBlaCar - PAUG 3 mars 2015

Transcript

1. Développer une app Android en 2015
2. Saad Bouchehboun Tech Manager Francois-Xavier Oxeda Android developer @BlaBlaCarTech Alexandra Tritz Android developer
3. Mobile First Jan. 2013 → 2015
6. Librairies utilisées
7. ButterKnife public class ForgotPasswordActivity extends Activity { @InjectView(R.id.new_password_header) TextView newPasswordHeader; @InjectView(R.id.new_password_editText) EditText newPasswordEditText; @InjectView(R.id.confirm_password_editText) EditText confirmPasswordEditText; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_forgot_password); ButterKnife.inject(this); // Instead of // newPasswordHeader = (TextView) findViewById(R.id.new_password_header); // …
8. ButterKnife @Optional @OnClick(R.id.drawer_logout_textView) public void logout() { // ... } @Optional @OnClick(R.id.drawer_login_textView) public void login() { // ... } @OnItemSelected(R.id.listView) public void onItemSelected(int position){ // ... }
9. Universal Image Loader public void displayUser(User user) { ImageLoader.getInstance().displayImage( user.getPictureUrl(), userImageView ); // ... } public void displayUser(User user) { ImageLoader.getInstance().displayImage( user.getPictureUrl(), userImageView, options, listener ); // ... }
10. Merge Adapter public class UpcomingRidesAdapter extends MergeAdapter { private TripOfferAdapter driverAdapter; private SeatBookedAdapter seatsBookedAdapter; private TripListAdapter visitedAdapter; public UpcomingRidesAdapter(Context context) { // driver trip offers sub-adapter driverAdapter = new TripOfferAdapter(context); addAdapter(driverAdapter); //booked seats seatsBookedAdapter = new SeatBookedAdapter(context); addAdapter(seatsBookedAdapter); // visited trips sub-adapter visitedAdapter = new TripListAdapter(context); addAdapter(visitedAdapter); } }
11. Retrofit A type-safe REST client for Android and Java
12. Otto public class BusManager { private static BusManager instance; public Bus bus; private BusManager() { bus = new Bus(); } public static BusManager getInstance() { if (instance == null) { instance = new BusManager(); } return instance; } }
13. Otto // Publishing BusManager.getInstance().bus.post( new NotificationCountEvent(result) );
14. Otto // Subscribing @Override public void onResume() { super.onResume(); BusManager.getInstance().bus.register(this); } @Override public void onPause() { super.onPause(); BusManager.getInstance().bus.unregister(this); } @Subscribe public void onNotificationCountEvent(NotificationCountEvent event) { // Update UI }
15. Autres... Crouton ViewPagerIndicator
16. Traductions Over The Air
17. OpenLocalization
18. openl10n.io
19. Déploiement des traductions Les traductions sont synchronisés sur openl10n Une fois éditées elles sont directement déployées en prod (S3)
20. Les traductions sont mises à jour dynamiquement à l’ ouverture de l’application
21. strings-en.json { "contact.item.text.call_phone": "Call", "contact.item.text.text_phone": "Send a SMS", ... } strings-fr.json { "contact.item.text.call_phone": "Appeler", "contact.item.text.text_phone": "Envoyer un SMS", ... }
22. ids_ext_strings.xml <item type="id" name="str_contact.item.text.call_phone"/> MainActivity.java BlablacarApplication.getExtString( this.getContext(), R.id.str_contact.item.text.call_phone); activity_main.xml <TextView typeandroid:text="@id/str_contact.item.text.call_phone"/>
23. Configuration localisée
26. GET api.blablacar.com/trips/1234 Accept-Language: fr-FR X-Currency: EUR HTTP vs Localization
27. Values-fr/context.xml <?xml version="1.0" encoding="utf-8"?> <resources> <string name="locale">fr_FR</string> <string name="cur">EUR</string> <bool name="show_date_filter_in_settings">false</bool> <bool name="show_using_highways_setting">true</bool> <bool name="is_booking">true</bool> <string name="tagmanager_container_id">GTM-XXXXXX</string> <bool name="can_select_currency">false</bool> </resources> getResources().getString(R.string.locale);
28. Now
29. Deeplink
31. blablacar://pwd
32. mobiledeeplinking.org
33. Schéma AndroidManifest.xml <activity android:name="org.mobiledeeplinking.android.MobileDeepLinking"> <intent-filter> <data android:scheme="blablacar" /> ...
34. Routes MobileDeepLinkingConfig.json { "defaultRoute": { "class": "com.comuto.v3.activity.MainActivity" }, "routes": { "search": { "class": "com.comuto.v3.activity.SearchActivity" "...":
35. Deeplink
36. Librairies
37. Exécute des requêtes asynchrones Respecte le cycle de vie des activités Cache les réponses
38. RoboSpice private SpiceManager spiceManager = new SpiceManager(SpiceService.class); @Override protected void onStart() { super.onStart(); spiceManager.start(this); } @Override protected void onStop() { spiceManager.shouldStop(); super.onStop(); } spiceManager.execute(spiceRequest, requestListener);
39. RoboSpice // Request public class MySpiceRequest extends SpiceRequest<T> { public MySpiceRequest(Class<T> clazz) { super(clazz); } @Override public T loadDataFromNetwork() throws Exception { // Background process } }
40. RoboSpice // Listener public class MyRequestListener implements RequestListener<T> { @Override public void onRequestFailure(SpiceException spiceException) { } @Override public void onRequestSuccess(T t) { } }
41. + Retrofit
42. RoboSpice + Retrofit // Interface public interface RetrofitInterface { @GET("/public_session") Session getPublicSession(); }
43. RoboSpice + Retrofit // RetrofitGsonSpiceService public class MyRetrofitSpiceService extends RetrofitGsonSpiceService { @Override public void onCreate() { super.onCreate(); addRetrofitInterface(RetrofitInterface.class); } @Override protected String getServerUrl() { return "http://www.base-url.com/"; } }
44. RoboSpice + Retrofit // Interface: public class GetPublicSessionRequest extends RetrofitSpiceRequest<Session, RetrofitInterface> { public GetPublicSessionRequest(Class<Session> clazz, Class<RetrofitInterface> interfaceClass) { super(clazz, interfaceClass); } @Override public Session loadDataFromNetwork() throws Exception { return getService().getPublicSession(); } }
45. RoboSpice + Retrofit // Callback Interfaces public interface ManagerErrorCallback { public void onFailed(BlablacarError error); public void onFailed(List<BlablacarFormError> error); public void onNoNetworkError(); } public interface ManagerCallback<T> extends ManagerErrorCallback { public void onSuccess(T result); }
46. RoboSpice + Retrofit public class BaseActivity extends Activity implements ManagerErrorCallback { // ... } public class SomeActivity extends BaseActivity implements ManagerCallback<T> { // ... }
47. RoboSpice + Retrofit public class BaseManager<T> implements RequestListener<T> { protected ManagerCallback<T> callback; protected SpiceManager spiceManager; protected BaseManager(SpiceManager spiceManager, ManagerCallback<T> callback) { this.spiceManager = spiceManager; this.callback = callback; } @Override public void onRequestFailure(SpiceException spiceException) { // Read exception and call the right callback accordingly // callback.onFailed(BlablacarError error); // callback.onFailed(List<BlablacarFormError> error); // callback.onNoNetworkError(); } @Override public void onRequestSuccess(T result) { callback.onSuccess(result); } protected void execute(RetrofitSpiceRequest request) { spiceManager.execute(request, this); } } BaseManager UserManager TripManager PaymentManager
48. RoboSpice + Retrofit public class UserManager extends BaseManager { public UserManager(SpiceManager spiceManager, ManagerCallback callback) { super(spiceManager, callback); } public void getPublicSession(){ execute(new GetPublicSessionRequest()); } } BaseManager UserManager TripManager PaymentManager
49. RoboSpice + Retrofit public class SomeActivity extends BaseActivity implements ManagerCallback<Session> { private SpiceManager spiceManager = new SpiceManager(MyRetrofitGsonSpiceService.class); private void someMethod(){ // ... UserManager userManager = new UserManager(spiceManager, this); userManager.getPublicSession(); // ... } @Override public void onSuccess(Session result) { } }
50. Performances
51. OAuth2 POST /oauth2/access_token?grant_type=password &scope=user_profile &login=username &password=userpwd { "access_token": "abcd1234567890", "expires_in": 3600, "token_type": "bearer" } Récupération d’un Access Token
52. OAuth2 Utilisation de l’Access Token GET /api/trips?fn=Paris Authorization: Bearer abcd1234567890 { "trips": [...] }
53. OAuth2 Varnish
54. OAuth2
55. Latence ?
56. OAuth2
57. OAuth2 JWT
58. http://jwt.io JSON Web Token
59. Monitoring
61. public SpiceManager(Class<? extends SpiceService> spiceServiceClass, Boolean withMonitoring) { super(spiceServiceClass); this.isMonitored.set(withMonitoring); //AtomicBoolean } @Override public synchronized void start(Context context) { super.start(context); if (this.isMonitored.get()) { MonitoringService.getInstance().start(); } } @Override public synchronized void shouldStop() { super.shouldStop(); if (isMonitored.get()) { MonitoringService.getInstance().stop(); } } Network monitoring
62. private static AtomicInteger monitoredServiceNumber ; private ConcurrentLinkedQueue<MonitoringData> inMemoryQueue ; public synchronized void start() { if ( monitoredServiceNumber.getAndIncrement() > 0) { return; } startMonitoring(); } private void flush() { int size = inMemoryQueue.size(); if (size == 0) { return; } MonitoringData[] monitoringDatas = new MonitoringData[size]; for (int i = 0; i < size; i++) { monitoringDatas[i] = inMemoryQueue.poll(); } MonitoringRequest monitoringRequest = new MonitoringRequest(monitoringDatas); spiceManager.execute(monitoringRequest, new MonitoringListener()); } Network monitoring
63. protected RestAdapter.Builder createRestAdapterBuilder() { RestAdapter.Builder bbcRestAdapter = new RestAdapter.Builder() .setProfiler(new MonitoringProfiler()); return bbcRestAdapter; } public class MonitoringProfiler implements Profiler<Object> { @Override public void afterCall(RequestInformation requestInfo, long elapsedTime, int statusCode, Object beforeCallData) { MonitoringService.getInstance().sendReq(requestInfo, elapsedTime, statusCode); } } Network monitoring
64. Source : SPDY Essentials by Will Chan Roberto Peon SPDY
65. Crashs
66. Compte-rendu quotidien sur
67. 30 jours avant déploiement total d’une nouvelle release
68. Google+ Group Plus de 150 membres dont une vingtaine de très actifs. Des retours chaque semaine sur le fonctionnement produit, des bugs ou des suggestions d’amélioration. Sélection de membres pour tester nos prochaines features.
70. Material Design
71. Wear
72. Merci @BlaBlaCarTech