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class AnimatorExtension {
  
    // Skipping the initialization
    private val animator: Animator? = null

    // Normal Usage
    fun normalAnimationListener() {
        animator?.addListener(
                onStart = {

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class HomeActivity : DaggerAppCompatActivity() {

    @Inject
    lateinit var apiService: ApiService

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        
        // init UI
        // Your apiService instance is ready to use.

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@Module
abstract class ActivityModule {

    @ContributesAndroidInjector
    internal abstract fun contributeHomeActivity(): HomeActivity
}

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class MyApplication : DaggerApplication() {

    override fun onCreate() {
        super.onCreate()

        initializeTimber()
    }

    private fun initializeTimber() {
        if (BuildConfig.DEBUG) {

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@Component(modules = [AndroidSupportInjectionModule::class, AppModule::class, ActivityModule::class])
interface AppComponent : AndroidInjector<DaggerApplication> {

    @Component.Builder
    interface Builder {
        @BindsInstance
        fun application(application: Application): Builder

        fun build(): AppComponent
    }

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interface ApiService {

    @GET("api")
    fun getUsers(@Query("result") result: Int): Observable<RandomUserResponse>
}

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apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
apply plugin: 'kotlin-android-extensions'
apply plugin: 'kotlin-kapt'

android {
    compileSdkVersion 27
    defaultConfig {
        applicationId "com.simform.android.dagger2advanced"
        minSdkVersion 16

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public class BaseRecyclerAdapter<T, MVH extends BaseViewHolder<T>, EVH extends BaseViewHolder<T>> extends RecyclerView.Adapter<BaseViewHolder<T>> {

    private static final int VIEW_TYPE_EMPTY = 0;
    private static final int VIEW_TYPE_DATA = 1;
    private List<T> list = new ArrayList<>();
    @LayoutRes
    private int emptyViewLayoutResource;
    private Class<EVH> emptyViewHolder;
    @LayoutRes
    private int dataLayoutResource;

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public class BaseRecyclerAdapter<T, MVH extends BaseViewHolder<T>, EVH extends BaseViewHolder<T>> extends RecyclerView.Adapter<BaseViewHolder<T>> {

    private static final int VIEW_TYPE_EMPTY = 0;
    private static final int VIEW_TYPE_DATA = 1;
    private List<T> list = new ArrayList<>();
    @LayoutRes
    private int emptyViewLayoutResource;
    private Class<EVH> emptyViewHolder;
    @LayoutRes
    private int dataLayoutResource;

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public class ScrollingActivity extends AppCompatActivity {

    private SectionsPagerAdapter mSectionsPagerAdapter;

    private ViewPager mViewPager;

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