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TP-Mobile-Era-2016-final-compressed.pdf
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stephanenicolas
November 04, 2016
Programming
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TP-Mobile-Era-2016-final-compressed.pdf
Introduction to Toothpick: a fresh approach to DI
(Java / Android)
stephanenicolas
November 04, 2016
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Transcript
A FRESH APPROACH TO DI TOOTHPICK https://github.com/stephanenicolas/toothpick/
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
5IF"OESPJE5FBNJT)JSJOH jobs.groupon.com/careers/
THE TALK WHY DI ? WHY TOOTHPICK? TOOTHPICK FEATURES
ADVANCED FEATURES CONCLUSION SCOPE MODULES & BINDINGS SCOPE TREE SCOPE SINGLETONS MVP & STATE PRESERVATION MULTIPLE ACTIVITIES FLOWS
WHY DI ? DECOUPLE REUSE TEST USES USES USES MOCK
USES
WHY TOOTHPICK? SIMPLER BETTER TEST SUPPORT EVEN FASTER
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
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); } }
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); } }
TOOTHPICK FEATURES APPLICATION SCOPE ACTIVITY 1 SCOPE ACTIVITY 2 SCOPE
SERVICE 1 SCOPE FRAGMENT 3 SCOPE FRAGMENT 1 SCOPE FRAGMENT 2 SCOPE SCOPE TREE
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
TOOTHPICK FEATURES APPLICATION SCOPE ACTIVITY SCOPE APP SINGLETONS ACTIVITY SINGLETONS
SCOPE SINGLETONS
TOOTHPICK FEATURES public class Module extends Module { public Module1()
{ bind(Machine.class).toInstance(new IceMachine()); } } SCOPE SINGLETONS SINGLETONS CAN BE DEFINED IN MODULES
TOOTHPICK FEATURES @Singleton public class IceMachine { } @ActivitySingleton public
class SmoothieMachine { } APPLICATION SCOPE ACTIVITY SCOPE SCOPE SINGLETONS OR USING ANNOTATIONS
ADVANCED TOOTHPICK FEATURES MVP & STATE PRESERVATION
ADVANCED TOOTHPICK FEATURES MVP & STATE PRESERVATION Landscape Portrait
PRESENTER INSTANCE APPLICATION SCOPE PRESENTER SCOPE ADVANCED TOOTHPICK FEATURES MVP
& STATE PRESERVATION ACTIVITY SCOPE
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); } }
@PresenterSingleton public class MyPresenter { String dealId; int quantity; }
PRESENTER SCOPE MVP & STATE PRESERVATION ADVANCED TOOTHPICK FEATURES
ACTIVITY 1 ADVANCED TOOTHPICK FEATURES ACTIVITY 3 ACTIVITY 2 MULTI
ACTIVITY FLOWS Purchase Flow !
APPLICATION SCOPE ACTIVITY 1 SCOPE ADVANCED TOOTHPICK FEATURES FLOW SCOPE
ACTIVITY 3 SCOPE ACTIVITY 2 SCOPE MULTI ACTIVITY FLOWS
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); } }
@FlowSingleton public class ShoppingCart { List<PurchaseItem> purchases… } FLOW SCOPE
MULTI ACTIVITY FLOWS ADVANCED TOOTHPICK FEATURES
CONCLUSION QUESTIONS ? COMMENTS ?
A FRESH APPROACH TO DI TOOTHPICK https://github.com/stephanenicolas/toothpick/ +stephane)nicolas @D_Lemures