TP-Mobile-Era-2016-final-compressed.pdf

Introduction to Toothpick: a fresh approach to DI
(Java / Android)

Transcript

1. A FRESH APPROACH TO DI TOOTHPICK https://github.com/stephanenicolas/toothpick/
2. ABOUT US Senior Android Dev @ Groupon ~20 years of Java coding OSS: Dart, TP STEPHANE NICOLAS DANIEL MOLINERO REGUERA Android Dev @ Groupon Best level 3 ever OSS: Dart, +stephane)nicolas @D_Lemures
3. 5IF
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 jobs.groupon.com/careers/
4. THE TALK WHY DI ? WHY TOOTHPICK? TOOTHPICK FEATURES 
 ADVANCED FEATURES 
 
 CONCLUSION SCOPE MODULES & BINDINGS SCOPE TREE SCOPE SINGLETONS MVP & STATE PRESERVATION MULTIPLE ACTIVITIES FLOWS
5. WHY DI ? DECOUPLE REUSE TEST USES USES USES MOCK USES
6. WHY TOOTHPICK? SIMPLER BETTER TEST SUPPORT EVEN FASTER
7. TOOTHPICK FEATURES public class SmoothieMachine {
 
 @Inject IceMachine iceMachine;
 
 public void doSmoothie() {
 iceMachine.makeIce();
 }
 } @Singleton
 public class IceMachine {
 Foo foo;
 
 @Inject
 public IceMachine(Foo foo) {
 this.foo = foo;
 }
 JSR 330 annotations→nothing new here
8. TOOTHPICK FEATURES SCOPE SCOPE MAKE INJECTIONS public class MyApplication extends Application { @Inject Machine machine;
 
 @Override protected void onCreate() {
 super.onCreate();
 
 Scope appScope = Toothpick.openScope(this); appScope.installModules(…); Toothpick.inject(this, appScope);
 } }
9. TOOTHPICK FEATURES SCOPE, MODULES & BINDINGS SCOPE BINDINGS MODULES public class MyApplication extends Application { @Inject Machine machine;
 
 @Override protected void onCreate() {
 super.onCreate();
 
 Scope appScope = Toothpick.openScope(this); appScope.installModules(new Module() {{
 bind(Machine.class).to(IceMachine.class); }});
 Toothpick.inject(this, appScope);
 } }
10. TOOTHPICK FEATURES APPLICATION
 SCOPE ACTIVITY 1
 SCOPE ACTIVITY 2
 SCOPE SERVICE 1
 SCOPE FRAGMENT 3
 SCOPE FRAGMENT 1
 SCOPE FRAGMENT 2
 SCOPE SCOPE TREE
11. TOOTHPICK FEATURES public class LemonActivity extends Activity {
 
 @Inject SmoothieMachine smoothieMachine;
 
 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 Scope scope = Toothpick.openScopes(getApplication(), this);
 scope.installModules(…);
 Toothpick.inject(this, scope);
 } } SCOPE TREE APPLICATION
 SCOPE ACTIVITY
 SCOPE
12. TOOTHPICK FEATURES APPLICATION
 SCOPE ACTIVITY
 SCOPE APP SINGLETONS ACTIVITY SINGLETONS SCOPE SINGLETONS
13. TOOTHPICK FEATURES public class Module extends Module {
 public Module1() {
 bind(Machine.class).toInstance(new IceMachine());
 }
 } SCOPE SINGLETONS SINGLETONS CAN BE DEFINED IN MODULES
14. TOOTHPICK FEATURES @Singleton
 public class IceMachine {
 } @ActivitySingleton
 public class SmoothieMachine {
 } APPLICATION
 SCOPE ACTIVITY
 SCOPE SCOPE SINGLETONS OR USING ANNOTATIONS
15. ADVANCED TOOTHPICK FEATURES MVP & STATE PRESERVATION
16. ADVANCED TOOTHPICK FEATURES MVP & STATE PRESERVATION Landscape Portrait
17. PRESENTER INSTANCE APPLICATION SCOPE PRESENTER SCOPE ADVANCED TOOTHPICK FEATURES MVP & STATE PRESERVATION ACTIVITY SCOPE
18. ADVANCED TOOTHPICK FEATURES MVP & STATE PRESERVATION public class MyActivity extends Activity {
 
 @Inject MyPresenter presenter; 
 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 Scope scope = openScopes(getApplication(), 
 PresenterSingleton.class, 
 this);
 Toothpick.inject(this, scope);
 } }
19. @PresenterSingleton
 public class MyPresenter {
 String dealId;
 int quantity;
 } PRESENTER SCOPE MVP & STATE PRESERVATION ADVANCED TOOTHPICK FEATURES
20. ACTIVITY 1 ADVANCED TOOTHPICK FEATURES ACTIVITY 3 ACTIVITY 2 MULTI ACTIVITY FLOWS Purchase Flow !
21. APPLICATION SCOPE ACTIVITY 1 SCOPE ADVANCED TOOTHPICK FEATURES FLOW SCOPE ACTIVITY 3 SCOPE ACTIVITY 2 SCOPE MULTI ACTIVITY FLOWS
22. ADVANCED TOOTHPICK FEATURES MVP & STATE PRESERVATION public class MyActivity extends Activity {
 
 @Inject ShoppingCart shoppingCart; 
 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 Scope scope = openScopes(getApplication(), 
 FlowSingleton.class, 
 this);
 Toothpick.inject(this, scope);
 } }
23. @FlowSingleton
 public class ShoppingCart {
 List<PurchaseItem> purchases…
 } FLOW SCOPE MULTI ACTIVITY FLOWS ADVANCED TOOTHPICK FEATURES
24. CONCLUSION QUESTIONS ? COMMENTS ?
25. A FRESH APPROACH TO DI TOOTHPICK https://github.com/stephanenicolas/toothpick/ +stephane)nicolas @D_Lemures