Use dependency injection for most singletons

appsearch/build.gradle.kts

@@ -48,6 +48,8 @@ dependencies {
 
     implementation(libs.guava)
 
+    implementation(libs.koin.android)
+
     implementation(project(":search"))
     implementation(project(":base"))
     implementation(project(":icons"))

appsearch/src/main/java/de/mm20/launcher2/appsearch/AppSearchRepository.kt

@@ -16,14 +16,17 @@ import kotlinx.coroutines.withContext
 import java.util.concurrent.Executors
 import kotlin.coroutines.suspendCoroutine
 
-class AppSearchRepository private constructor(val context: Context) : BaseSearchableRepository() {
+class AppSearchRepository(
+    val context: Context,
+    hiddenItemsRepository: HiddenItemsRepository
+    ) : BaseSearchableRepository() {
 
     private var session: GlobalSearchSession? = null
 
     val appSearchResults = MediatorLiveData<List<AppSearchResult>?>()
 
     private val allAppSearchResults = MutableLiveData<List<AppSearchResult>?>(emptyList())
-    private val hiddenItemKeys = HiddenItemsRepository.getInstance(context).hiddenItemsKeys
+    private val hiddenItemKeys = hiddenItemsRepository.hiddenItemsKeys
 
     init {
         appSearchResults.addSource(hiddenItemKeys) { keys ->
@@ -57,13 +60,4 @@ class AppSearchRepository private constructor(val context: Context) : BaseSearch
         }
         allAppSearchResults.value = results
     }
-
-    companion object {
-        private lateinit var instance: AppSearchRepository
-        fun getInstance(context: Context): AppSearchRepository {
-            if (!::instance.isInitialized) instance = AppSearchRepository(context.applicationContext)
-            return instance
-        }
-    }
-
 }

appsearch/src/main/java/de/mm20/launcher2/appsearch/AppSearchViewModel.kt

@@ -3,9 +3,11 @@ package de.mm20.launcher2.appsearch
 import android.app.Application
 import androidx.lifecycle.AndroidViewModel
 import androidx.lifecycle.LiveData
+import androidx.lifecycle.ViewModel
 import de.mm20.launcher2.search.data.AppSearchResult
 
-class AppSearchViewModel(app: Application) : AndroidViewModel(app) {
-    private val repository = AppSearchRepository.getInstance(app)
-    private val appSearch: LiveData<List<AppSearchResult>?> = repository.appSearchResults
+class AppSearchViewModel(
+    appSearchRepository: AppSearchRepository
+) : ViewModel() {
+    private val appSearch: LiveData<List<AppSearchResult>?> = appSearchRepository.appSearchResults
 }

appsearch/src/main/java/de/mm20/launcher2/appsearch/Module.kt

@@ -0,0 +1,10 @@
+package de.mm20.launcher2.appsearch
+
+import org.koin.android.ext.koin.androidContext
+import org.koin.androidx.viewmodel.dsl.viewModel
+import org.koin.dsl.module
+
+val appSearchModule = module {
+    single { AppSearchRepository(androidContext(), get()) }
+    viewModel { AppSearchViewModel(get()) }
+}