PowerPoint Presentation
Dagger2:
?
public class NetworkClient {
}private static final class NetworkClientHolder { static
NetworkClient INSTANCE = new NetworkClient();}public FutureTask
execute(Request request) { ...}public NetworkClient() { this.client
= new OkHttpClient();}public static NetworkClient getInstance() {
return NetworkClientHolder.INSTANCE;}
public static NetworkClient getInstance() { return
NetworkClientHolder.INSTANCE;}public class MyFragment extends
Fragment {
}
@Override public void onResume() { super.onResume();
updateFeed(); }
private void updateFeed() { NetworkClient client =
NetworkClient.getInstance(); FutureTask response =
client.execute(request); ...}
public static NetworkClient getInstance() { return
NetworkClientHolder.INSTANCE;}.
- - :
MyActivityNetworkClientOkHttpClientMyActivityOkHttpClientNetworkClient
public class NetworkClient {
}public FutureTask execute(Request request) { ...}public
NetworkClient(Client client) { this.client = client;}
public class MyFragment extends Fragment {
@Override public void onResume() { super.onResume();
updateFeed(); }
}
private void updateFeed() { NetworkClient client =
NetworkClient.getInstance(); FutureTask response =
client.execute(request); ...}private void updateFeed() { Client
client = new OkHttpClient(); NetworkClient client = new
NetworkClient(client); FutureTask response =
client.execute(request); ...}
c Dagger2
@Modulepublic class NetworkModule {
}@Provides@SingletonClient provideOkHttpClient() { return new
OkHttpClient();}
-
NetworkClient constructor injectionpublic class NetworkClient
{
}public FutureTask execute(Request request) { ...}public
NetworkClient(Client client) { this.client =
client;}@Inject@Singletonprivate final Client client;
NetworkClient setter injectionpublic class NetworkClient {
}public FutureTask execute(Request request) { ...}public void
setClient(Client client) { this.client =
client;}@Inject@Singletonpublic NetworkClient() {
}@Injectprivate final Client client;private Client client;
NetworkClient Dagger2public class MyFragment extends Fragment
{
}
private void updateFeed() { Client client = new OkHttpClient();
NetworkClient client = new NetworkClient(client); FutureTask
response = client.execute(request); ...}private void updateFeed() {
FutureTask response = client.execute(request); ...}@Inject
NetworkClient client;@Overridepublic void onActivityCreated(Bundle
state) { super.onActivityCreated(state);
getComponent().inject(this);}
Injection
@Component
@Component(modules = { NetworkModule.class })public interface
AppComponent {
}@Singleton
?@Generated("dagger.internal.codegen.ComponentProcessor")public
final class MyFragment_MembersInjector implements MembersInjector {
private final MembersInjector supertypeInjector; private final
Provider clientProvider;
public MyFragment_MembersInjector(MembersInjector
supertypeInjector, Provider clientProvider) { assert
supertypeInjector != null; this.supertypeInjector =
supertypeInjector; assert clientProvider != null;
this.clientProvider = clientProvider; }
@Override public void injectMembers(MyFragment instance) { if
(instance == null) { throw new NullPointerException("Cannot inject
members into a null reference"); }
supertypeInjector.injectMembers(instance); instance.client =
clientProvider.get(); }
public static MembersInjector create(MembersInjector
supertypeInjector, Provider clientProvider) { return new
MyFragment_MembersInjector(supertypeInjector, clientProvider);
}}
@Component vs @Subcomponent@PerActivity@Subcomponent(modules =
ActivityModule.class)public interface ActivitySubcomponent {
}
@Component(modules = { NetworkModule.class })public interface
AppComponent {
ActivitySubcomponent plus(ActivityModule module);}
@Subcomponent
plus()
, !
@Qualifier@Modulepublic class NetworkModule {
@Provides @Singleton NetworkClient taxiClient(Client client) {
return new NetworkClient(client, "https://taxi.yandex.ru/api");
}
@Provides @Singleton NetworkClient mapsClient(Client client) {
return new NetworkClient(client, "https://maps.yandex.ru/api");
}}@Named("taxi")@Named("maps")
@Qualifier@Inject@Named("taxi")NetworkClient taxiClient;
@Inject@Named("maps")NetworkClient mapsClient;
Dagger IntelliJ
Pluginhttps://github.com/square/dagger-intellij-plugin
?
Proguard
Dagger1: http://square.github.io/dagger/
Dagger2: http://google.github.io/dagger
(U2020 Dagger2): https://clck.ru/9aSsV
: https://clck.ru/9aVu4
DAGGER 2 - A New Type of dependency injection:
http://www.youtube.com/watch?v=oK_XtfXPkqw
! @[email protected]
