Dagger2 Starter

#Dagger2 Links
https://github.com/google/dagger

#installers
    def dagger_version = 2.29
    api "com.google.dagger:dagger:$dagger_version"
    annotationProcessor "com.google.dagger:dagger-compiler:$dagger_version"


    api "com.google.dagger:dagger-android:$dagger_version"
    api "com.google.dagger:dagger-android-support:$dagger_version" // if you use the support libraries
    annotationProcessor "com.google.dagger:dagger-android-processor:$dagger_version"
    
#1st
need to create a BaseApplication.class

```
public class BaseApplication extends DaggerApplication {
    @Override
    protected AndroidInjector<? extends DaggerApplication> applicationInjector() {
        return DaggerAppComponent
                .builder()
                .application(this)
                .build();
    }
```

#2nd 
need to create an interface AppComponent.java

```
@Component(
        modules = {
                AndroidSupportInjectionModule.class
        }
)
public interface AppComponent extends AndroidInjector<BaseApplication> {

    @Component.Builder
    interface Builder {

        @BindsInstance
        Builder application(Application application);

        AppComponent build();
    }

}
```

#3rd 
Need to create AppModule 
for accessing objects in everywhere in the application.
Example: Glide
```
@Module
public class AppModule {

    @Provides
    static RequestOptions provideRequestOptions() {
        return RequestOptions
                .placeholderOf(R.drawable.ic_launcher_background)
                .error(R.drawable.ic_launcher_background);
    }

    @Provides
    static RequestManager provideGlideInstance(Application application, RequestOptions requestOptions) {
        return Glide.with(application)
                .setDefaultRequestOptions(requestOptions);

    }
}

```

From activity

just Inject and use
```
    @Inject
    RequestManager requestManager;

    public void setLogo(){
        requestManager
                .load(R.drawable.loader)
                .into((ImageView)findViewById(R.id.login_logo));
    }

```