mladenrakonjac

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="me.mladenrakonjac.modernandroidapp">
  
    ...

    <application
        android:name=".ModernApplication"
        ...>
       ...

mladenrakonjac

class ModernApplication : DaggerApplication(){

    override fun applicationInjector(): AndroidInjector<out DaggerApplication> {
        TODO("not implemented")
    }

}

mladenrakonjac

@Module
class AppModule{

    @Provides
    fun providesContext(application: ModernApplication): Context {
        return application.applicationContext
    }
}

mladenrakonjac

...
dependencies {
    ...
    
    implementation "com.google.dagger:dagger:2.14.1"
    implementation "com.google.dagger:dagger-android:2.14.1"
    implementation "com.google.dagger:dagger-android-support:2.14.1"
    kapt "com.google.dagger:dagger-compiler:2.14.1"
    kapt "com.google.dagger:dagger-android-processor:2.14.1"
    

mladenrakonjac

object Injection {

    private var NET_MANAGER: NetManager? = null

    private fun provideNetManager(context: Context): NetManager {
        if (NET_MANAGER == null) {
            NET_MANAGER = NetManager(context)
        }
        return NET_MANAGER!!
    }

mladenrakonjac

object Injection {
    
    private fun provideNetManager(context: Context) : NetManager {
        return NetManager(context)
    }

    private fun gitRepoRepository(netManager: NetManager) :GitRepoRepository {
        return GitRepoRepository(netManager)
    }

mladenrakonjac

class MainActivity : AppCompatActivity(), RepositoryRecyclerViewAdapter.OnItemClickListener {

    private lateinit var mainViewModelFactory: MainViewModelFactory

    override fun onCreate(savedInstanceState: Bundle?) {
        ...
      
        mainViewModelFactory = Injection.provideMainViewModelFactory(applicationContext)
        val viewModel = ViewModelProviders.of(this, mainViewModelFactory)

mladenrakonjac

object Injection {

    fun provideMainViewModelFactory(context: Context) : MainViewModelFactory{
        val netManager = NetManager(context)
        val repository = GitRepoRepository(netManager)
        return MainViewModelFactory(repository)
    }
}

mladenrakonjac

class MainActivity : AppCompatActivity(), RepositoryRecyclerViewAdapter.OnItemClickListener {
    ....

    override fun onCreate(savedInstanceState: Bundle?) {
        ...

        val repository = GitRepoRepository(NetManager(applicationContext))
        val mainViewModelFactory = MainViewModelFactory(repository)
        val viewModel = ViewModelProviders.of(this, mainViewModelFactory)
                            .get(MainViewModel::class.java)

mladenrakonjac

class MainViewModelFactory(private val repository: GitRepoRepository) 
         : ViewModelProvider.Factory {
    override fun <T : ViewModel?> create(modelClass: Class<T>): T {
        if (modelClass.isAssignableFrom(MainViewModel::class.java)) {
            return MainViewModel(repository) as T
        }

        throw IllegalArgumentException("Unknown ViewModel Class")
    }