refactor: 뷰모델 팩토리 방식 변경

android/app/src/main/java/com/zzang/chongdae/presentation/view/detail/OfferingDetailActivity.kt

@@ -20,7 +20,7 @@ class OfferingDetailActivity : AppCompatActivity() {
         obtainOfferingId()
     }
     private val viewModel: OfferingDetailViewModel by viewModels {
-        OfferingDetailViewModelFactory(
+        OfferingDetailViewModel.getFactory(
             offeringId,
             OfferingDetailRepositoryImpl(
                 OfferingDetailDataSourceImpl(NetworkManager.offeringDetailService()),

android/app/src/main/java/com/zzang/chongdae/presentation/view/detail/OfferingDetailViewModel.kt

@@ -4,7 +4,9 @@ import android.util.Log
 import androidx.lifecycle.LiveData
 import androidx.lifecycle.MutableLiveData
 import androidx.lifecycle.ViewModel
+import androidx.lifecycle.ViewModelProvider
 import androidx.lifecycle.viewModelScope
+import androidx.lifecycle.viewmodel.CreationExtras
 import com.zzang.chongdae.BuildConfig
 import com.zzang.chongdae.domain.model.OfferingCondition
 import com.zzang.chongdae.domain.model.OfferingCondition.Companion.isAvailable
@@ -71,7 +73,7 @@ class OfferingDetailViewModel(
             ).onSuccess {
                 _isParticipated.value = true
                 _isAvailable.value = false
-                _commentDetailEvent.setValue(offeringDetail.value?.title ?: "")
+                _commentDetailEvent.setValue(offeringDetail.value?.title ?: DEFAULT_TITLE)
             }.onFailure {
                 Log.e("Error", it.message.toString())
             }
@@ -88,5 +90,21 @@ class OfferingDetailViewModel(
 
     companion object {
         private const val DEFAULT_TITLE = ""
+
+        @Suppress("UNCHECKED_CAST")
+        fun getFactory(
+            articleId: Long,
+            offeringDetailRepository: OfferingDetailRepository,
+        ) = object : ViewModelProvider.Factory {
+            override fun <T : ViewModel> create(
+                modelClass: Class<T>,
+                extras: CreationExtras,
+            ): T {
+                return OfferingDetailViewModel(
+                    articleId,
+                    offeringDetailRepository,
+                ) as T
+            }
+        }
     }
 }

android/app/src/main/java/com/zzang/chongdae/presentation/view/home/HomeFragment.kt

@@ -21,7 +21,7 @@ class HomeFragment : Fragment(), OnArticleClickListener {
     private val binding get() = _binding!!
     private lateinit var offeringAdapter: OfferingAdapter
     private val viewModel: OfferingViewModel by viewModels {
-        OfferingViewModeFactory(
+        OfferingViewModel.getFactory(
             OfferingsRepositoryImpl(
                 OfferingsDataSourceImpl(NetworkManager.offeringsService()),
             ),

android/app/src/main/java/com/zzang/chongdae/presentation/view/home/OfferingViewModel.kt

@@ -2,7 +2,9 @@ package com.zzang.chongdae.presentation.view.home
 
 import androidx.lifecycle.LiveData
 import androidx.lifecycle.ViewModel
+import androidx.lifecycle.ViewModelProvider
 import androidx.lifecycle.viewModelScope
+import androidx.lifecycle.viewmodel.CreationExtras
 import androidx.paging.Pager
 import androidx.paging.PagingConfig
 import androidx.paging.PagingData
@@ -24,5 +26,18 @@ class OfferingViewModel(
 
     companion object {
         private const val PAGE_SIZE = 10
+
+        @Suppress("UNCHECKED_CAST")
+        fun getFactory(offeringsRepository: OfferingsRepository) =
+            object : ViewModelProvider.Factory {
+                override fun <T : ViewModel> create(
+                    modelClass: Class<T>,
+                    extras: CreationExtras,
+                ): T {
+                    return OfferingViewModel(
+                        offeringsRepository,
+                    ) as T
+                }
+            }
     }
 }