DaggerAutoInject

Inject automatically your Activities & Fragments, just with a simple annotation

@InjectActivity
public class MainActivity extends AppCompatActivity {

    @Inject
    SharedPreferences sharedPreferences;

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }

    @Override
    protected void onStart() {
        super.onStart();
        sharedPreferences.edit()
                 .putString("androidVerions", "O")
                 .apply();
    }

}

Download

In your module

def dagger_version = "2.11-rc2"

dependencies {
    compile 'com.github.florent37:dagger-auto-inject:1.0.0'
    annotationProcessor 'com.github.florent37:dagger-auto-inject-compiler:1.0.0'

    //dagger2
    compile "com.google.dagger:dagger:$dagger_version"
    compile "com.google.dagger:dagger-android:$dagger_version"
    compile "com.google.dagger:dagger-android-support:$dagger_version"

    annotationProcessor "com.google.dagger:dagger-android-processor:$dagger_version"
    annotationProcessor "com.google.dagger:dagger-compiler:$dagger_version"
}

Component

Just add generated ActivityModule.class and FragmentModule.class into your Dagger's component

@Singleton
@Component(modules = {
        AppModule.class,

        AndroidInjectionModule.class,
        AndroidSupportInjectionModule.class,

        ActivityModule.class,
        FragmentModule.class,
})
public interface AppComponent {
    void inject(MainApplication application);

    @Component.Builder
    interface Builder {
        @BindsInstance
        Builder application(Application application);
        AppComponent build();
    }
}

Setup Application

Just annotate your application with @InjectApplication givin your Component, then call DaggerAutoInject.init(this);

Don't forget to implement HasActivityInjector as follow

@InjectApplication(component = AppComponent.class)
public class MainApplication extends Application implements HasActivityInjector {

    @Inject
    DispatchingAndroidInjector<Activity> activityAndroidInjector;

    @Override
    public void onCreate() {
        super.onCreate();
        
        final AppComponent appComponent = DaggerAppComponent.builder()
                        .application(this)
                        .build();
        
        DaggerAutoInject.init(this, appComponent);
    }

    @Override
    public AndroidInjector<Activity> activityInjector() {
        return activityAndroidInjector;
    }
}

Inject Fragment

Just add @InjectFragment to your fragment

@InjectFragment
public class MainFragment extends Fragment {

    @Inject
    SharedPreferences sharedPreferences;

    public static MainFragment newInstance() {
        return new MainFragment();
    }

    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        return inflater.inflate(R.layout.fragment_main, container, false);
    }

    @Override
    public void onActivityCreated(@Nullable Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        System.out.println(sharedPreferences.getAll());
    }
}

Then in your Activity / BaseActivity, implements HasSupportFragmentInjector

public class BaseActivity extends AppCompatActivity implements HasSupportFragmentInjector {

    @Inject
    DispatchingAndroidInjector<Fragment> dispatchingFragmentInjector;

    @Override
    public AndroidInjector<Fragment> supportFragmentInjector() {
        return dispatchingFragmentInjector;
    }
}

Credits

Author: Florent Champigny

License

Copyright 2017 florent37, Inc.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.