Inject CodeViewModel with Hilt

Author: MihaiCristianCondrea

app/src/main/java/com/d4rk/androidtutorials/java/di/AppModule.java

@@ -8,6 +8,7 @@
 import com.d4rk.androidtutorials.java.data.repository.DefaultMainRepository;
 import com.d4rk.androidtutorials.java.data.repository.DefaultSupportRepository;
 import com.d4rk.androidtutorials.java.data.repository.HomeRepository;
+import com.d4rk.androidtutorials.java.data.repository.LessonRepository;
 import com.d4rk.androidtutorials.java.data.repository.MainRepository;
 import com.d4rk.androidtutorials.java.data.repository.SupportRepository;
 import com.d4rk.androidtutorials.java.data.source.DefaultHomeLocalDataSource;
@@ -16,6 +17,7 @@
 import com.d4rk.androidtutorials.java.data.source.HomeRemoteDataSource;
 import com.d4rk.androidtutorials.java.domain.about.GetCurrentYearUseCase;
 import com.d4rk.androidtutorials.java.domain.about.GetVersionStringUseCase;
+import com.d4rk.androidtutorials.java.domain.android.GetLessonUseCase;
 import com.d4rk.androidtutorials.java.domain.help.LaunchReviewFlowUseCase;
 import com.d4rk.androidtutorials.java.domain.help.RequestReviewFlowUseCase;
 import com.d4rk.androidtutorials.java.domain.home.GetAppPlayStoreUrlUseCase;
@@ -262,4 +264,15 @@ public RequestReviewFlowUseCase provideRequestReviewFlowUseCase(HelpRepository r
     public LaunchReviewFlowUseCase provideLaunchReviewFlowUseCase(HelpRepository repository) {
         return new LaunchReviewFlowUseCase(repository);
     }
+
+    @Provides
+    @Singleton
+    public LessonRepository provideLessonRepository() {
+        return new com.d4rk.androidtutorials.java.ui.screens.android.repository.LessonRepository();
+    }
+
+    @Provides
+    public GetLessonUseCase provideGetLessonUseCase(LessonRepository repository) {
+        return new GetLessonUseCase(repository);
+    }
 }

app/src/main/java/com/d4rk/androidtutorials/java/ui/screens/android/CodeActivity.java

@@ -8,15 +8,18 @@
 import androidx.viewpager2.adapter.FragmentStateAdapter;
 
 import com.d4rk.androidtutorials.java.R;
+import com.d4rk.androidtutorials.java.data.repository.LessonRepository;
 import com.d4rk.androidtutorials.java.databinding.ActivityTabLayoutBinding;
 import com.d4rk.androidtutorials.java.ui.components.navigation.UpNavigationActivity;
-import com.d4rk.androidtutorials.java.ui.screens.android.repository.LessonRepository;
 import com.d4rk.androidtutorials.java.ui.screens.android.tabs.CodeFragment;
 import com.d4rk.androidtutorials.java.ui.screens.android.tabs.LayoutFragment;
 import com.d4rk.androidtutorials.java.ui.screens.android.tabs.NoCodeFragment;
 import com.d4rk.androidtutorials.java.utils.EdgeToEdgeDelegate;
 import com.google.android.material.tabs.TabLayoutMediator;
 
+import dagger.hilt.android.AndroidEntryPoint;
+
+@AndroidEntryPoint
 public class CodeActivity extends UpNavigationActivity {
     private ActivityTabLayoutBinding binding;
 

app/src/main/java/com/d4rk/androidtutorials/java/ui/screens/android/CodeViewModel.java

@@ -4,13 +4,22 @@
 import androidx.lifecycle.MutableLiveData;
 import androidx.lifecycle.ViewModel;
 
+import com.d4rk.androidtutorials.java.data.repository.LessonRepository;
 import com.d4rk.androidtutorials.java.domain.android.GetLessonUseCase;
-import com.d4rk.androidtutorials.java.ui.screens.android.repository.LessonRepository;
 
+import javax.inject.Inject;
+
+import dagger.hilt.android.lifecycle.HiltViewModel;
+
+@HiltViewModel
 public class CodeViewModel extends ViewModel {
     private final MutableLiveData<LessonRepository.Lesson> lesson = new MutableLiveData<>();
-    private final LessonRepository repository = new LessonRepository();
-    private final GetLessonUseCase getLessonUseCase = new GetLessonUseCase(repository);
+    private final GetLessonUseCase getLessonUseCase;
+
+    @Inject
+    public CodeViewModel(GetLessonUseCase getLessonUseCase) {
+        this.getLessonUseCase = getLessonUseCase;
+    }
 
     public void setLessonName(String lessonName) {
         lesson.setValue(getLessonUseCase.invoke(lessonName));