Hilt dependency injection

app/src/main/java/com/ex2/hiltespresso/MainActivity.kt

@@ -2,7 +2,9 @@ package com.ex2.hiltespresso
 
 import androidx.appcompat.app.AppCompatActivity
 import android.os.Bundle
+import dagger.hilt.android.AndroidEntryPoint
 
+@AndroidEntryPoint
 class MainActivity : AppCompatActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)

app/src/main/java/com/ex2/hiltespresso/data/DataRepoImpl.kt

@@ -1,8 +1,9 @@
 package com.ex2.hiltespresso.data
 
 import com.ex2.hiltespresso.data.model.Profile
+import javax.inject.Inject
 
-class DataRepoImpl : DataRepository {
+class DataRepoImpl @Inject constructor() : DataRepository {
 
     override fun getProfile(): Profile =
         Profile(name = "Bruce Wayne", age = 42)

app/src/main/java/com/ex2/hiltespresso/di/ProfileModule.kt

@@ -1,4 +1,16 @@
 package com.ex2.hiltespresso.di
 
-class ProfileModule {
+import com.ex2.hiltespresso.data.DataRepoImpl
+import com.ex2.hiltespresso.data.DataRepository
+import dagger.Binds
+import dagger.Module
+import dagger.hilt.InstallIn
+import dagger.hilt.android.components.ViewModelComponent
+
+@InstallIn(ViewModelComponent::class)
+@Module
+abstract class ProfileModule {
+
+    @Binds
+    abstract fun getProfileSource(repo: DataRepoImpl): DataRepository
 }

app/src/main/java/com/ex2/hiltespresso/ui/profile/ProfileFragment.kt

@@ -7,13 +7,13 @@ import android.view.ViewGroup
 import android.widget.TextView
 import androidx.fragment.app.Fragment
 import androidx.fragment.app.viewModels
-import com.ex2.hiltespresso.data.DataRepoImpl
+import com.ex2.hiltespresso.R
+import dagger.hilt.android.AndroidEntryPoint
 
+@AndroidEntryPoint
 class ProfileFragment : Fragment() {
 
-    val viewModel by viewModels<ProfileViewModel> {
-        ProfileViewModel.Factory(repo = DataRepoImpl())
-    }
+    private val viewModel by viewModels<ProfileViewModel>()
 
     override fun onCreateView(
         inflater: LayoutInflater,

app/src/main/java/com/ex2/hiltespresso/ui/profile/ProfileViewModel.kt

@@ -1,17 +1,16 @@
 package com.ex2.hiltespresso.ui.profile
 
 import androidx.lifecycle.ViewModel
-import androidx.lifecycle.ViewModelProvider
 import com.ex2.hiltespresso.data.DataRepository
 import com.ex2.hiltespresso.data.model.Profile
+import dagger.hilt.android.lifecycle.HiltViewModel
+import javax.inject.Inject
 
-class ProfileViewModel(private val repo: DataRepository) : ViewModel() {
+@HiltViewModel
+class ProfileViewModel @Inject constructor(
+    private val repo: DataRepository
+) : ViewModel() {
 
     fun getProfile(): Profile = repo.getProfile()
 
-    class Factory(private val repo: DataRepository) : ViewModelProvider.Factory {
-        override fun <T : ViewModel?> create(modelClass: Class<T>): T {
-            return ProfileViewModel(repo) as T
-        }
-    }
 }