Switched from Dagger to android Hilt DI

app/build.gradle

@@ -17,10 +17,11 @@
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
-apply plugin: 'com.android.application'
-apply plugin: 'kotlin-android'
-apply plugin: 'kotlin-android-extensions'
-apply plugin: 'kotlin-kapt'
+apply plugin: "com.android.application"
+apply plugin: "kotlin-android"
+apply plugin: "kotlin-kapt"
+apply plugin: "kotlin-android-extensions"
+apply plugin: "dagger.hilt.android.plugin"
 apply plugin: "androidx.navigation.safeargs.kotlin"
 
 android {
@@ -77,8 +78,10 @@ dependencies {
     implementation "androidx.room:room-ktx:$room_version"
     kapt "androidx.room:room-compiler:$room_version"
 
-    implementation "com.google.dagger:dagger:$dagger_version"
-    kapt "com.google.dagger:dagger-compiler:$dagger_version"
+    implementation "androidx.hilt:hilt-lifecycle-viewmodel:$hilt_viewmodel_version"
+    implementation "com.google.dagger:hilt-android:$hilt_version"
+    kapt "com.google.dagger:hilt-android-compiler:$hilt_version"
+    kapt "androidx.hilt:hilt-compiler:$hilt_viewmodel_version"
 
     implementation "com.squareup.retrofit2:retrofit:$retrofit_version"
     implementation "com.squareup.retrofit2:converter-moshi:$retrofit_version"

app/src/main/AndroidManifest.xml

@@ -33,7 +33,7 @@
         android:label="@string/app_name"
         android:theme="@style/AppTheme">
         <activity
-            android:name=".ui.MainActivity"
+            android:name=".ui.activities.MainActivity"
             android:screenOrientation="portrait">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />

app/src/main/java/com/rtbishop/look4sat/Look4SatApp.kt

@@ -20,12 +20,7 @@
 package com.rtbishop.look4sat
 
 import android.app.Application
-import com.rtbishop.look4sat.dagger.AppComponent
-import com.rtbishop.look4sat.dagger.DaggerAppComponent
+import dagger.hilt.android.HiltAndroidApp
 
-class Look4SatApp : Application() {
-
-    val appComponent: AppComponent by lazy {
-        DaggerAppComponent.factory().create(applicationContext)
-    }
-}
+@HiltAndroidApp
+class Look4SatApp : Application()

app/src/main/java/com/rtbishop/look4sat/SharedViewModel.kt

@@ -17,13 +17,12 @@
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
-package com.rtbishop.look4sat.ui
+package com.rtbishop.look4sat
 
 import android.net.Uri
-import androidx.lifecycle.LiveData
-import androidx.lifecycle.MutableLiveData
-import androidx.lifecycle.ViewModel
-import androidx.lifecycle.viewModelScope
+import androidx.hilt.Assisted
+import androidx.hilt.lifecycle.ViewModelInject
+import androidx.lifecycle.*
 import com.github.amsacode.predict4java.GroundStationPosition
 import com.rtbishop.look4sat.data.Result
 import com.rtbishop.look4sat.data.SatEntry
@@ -35,13 +34,13 @@ import com.rtbishop.look4sat.utility.PrefsManager
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
 import java.util.*
-import javax.inject.Inject
 import javax.inject.Singleton
 
 @Singleton
-class SharedViewModel @Inject constructor(
+class SharedViewModel @ViewModelInject constructor(
     private val prefsManager: PrefsManager,
-    private val repository: Repository
+    private val repository: Repository,
+    @Assisted private val savedStateHandle: SavedStateHandle
 ) : ViewModel() {
 
     private val _passes = MutableLiveData<Result<MutableList<SatPass>>>()

app/src/main/java/com/rtbishop/look4sat/dagger/AppComponent.kt

@@ -1,50 +0,0 @@
-/*
- * Look4Sat. Amateur radio and weather satellite tracker and passes predictor for Android.
- * Copyright (C) 2019, 2020 Arty Bishop (bishop.arty@gmail.com)
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-package com.rtbishop.look4sat.dagger
-
-import android.content.Context
-import com.rtbishop.look4sat.dagger.modules.*
-import com.rtbishop.look4sat.ui.MainActivity
-import com.rtbishop.look4sat.ui.fragments.EntriesFragment
-import com.rtbishop.look4sat.ui.fragments.MapFragment
-import com.rtbishop.look4sat.ui.fragments.PassesFragment
-import com.rtbishop.look4sat.ui.fragments.PolarFragment
-import dagger.BindsInstance
-import dagger.Component
-import javax.inject.Singleton
-
-@Singleton
-@Component(
-    modules = [NetworkModule::class, PersistenceModule::class,
-        RepoModule::class, UtilityModule::class, ViewModelModule::class]
-)
-interface AppComponent {
-
-    @Component.Factory
-    interface Factory {
-        fun create(@BindsInstance context: Context): AppComponent
-    }
-
-    fun inject(mainActivity: MainActivity)
-    fun inject(entriesFragment: EntriesFragment)
-    fun inject(passesFragment: PassesFragment)
-    fun inject(polarFragment: PolarFragment)
-    fun inject(mapFragment: MapFragment)
-}

app/src/main/java/com/rtbishop/look4sat/dagger/ViewModelFactory.kt

@@ -1,25 +0,0 @@
-package com.rtbishop.look4sat.dagger
-
-import androidx.lifecycle.ViewModel
-import androidx.lifecycle.ViewModelProvider
-import javax.inject.Inject
-import javax.inject.Provider
-import javax.inject.Singleton
-
-@Singleton
-class ViewModelFactory @Inject constructor(
-    private val creators: Map<Class<out ViewModel>,
-            @JvmSuppressWildcards Provider<ViewModel>>
-) : ViewModelProvider.Factory {
-    override fun <T : ViewModel?> create(modelClass: Class<T>): T {
-        val creator = creators[modelClass] ?: creators.entries.firstOrNull {
-            modelClass.isAssignableFrom(it.key)
-        }?.value ?: throw IllegalArgumentException("Unsupported ViewModel class: $modelClass")
-        try {
-            @Suppress("UNCHECKED_CAST")
-            return creator.get() as T
-        } catch (e: Exception) {
-            throw RuntimeException(e)
-        }
-    }
-}

app/src/main/java/com/rtbishop/look4sat/dagger/ViewModelKey.kt

@@ -1,14 +0,0 @@
-package com.rtbishop.look4sat.dagger
-
-import androidx.lifecycle.ViewModel
-import dagger.MapKey
-import kotlin.reflect.KClass
-
-@Target(
-    AnnotationTarget.FUNCTION,
-    AnnotationTarget.PROPERTY_GETTER,
-    AnnotationTarget.PROPERTY_SETTER
-)
-@Retention(AnnotationRetention.RUNTIME)
-@MapKey
-annotation class ViewModelKey(val value: KClass<out ViewModel>)

app/src/main/java/com/rtbishop/look4sat/dagger/modules/RepoModule.kt

@@ -1,44 +0,0 @@
-package com.rtbishop.look4sat.dagger.modules
-
-import android.content.ContentResolver
-import android.content.Context
-import com.rtbishop.look4sat.repo.DefaultRepository
-import com.rtbishop.look4sat.repo.Repository
-import com.rtbishop.look4sat.repo.local.EntriesDao
-import com.rtbishop.look4sat.repo.local.SourcesDao
-import com.rtbishop.look4sat.repo.local.TransmittersDao
-import com.rtbishop.look4sat.repo.remote.TransmittersApi
-import dagger.Module
-import dagger.Provides
-import okhttp3.OkHttpClient
-import javax.inject.Singleton
-
-@Module
-class RepoModule {
-
-    @Singleton
-    @Provides
-    fun provideContentResolver(context: Context): ContentResolver {
-        return context.applicationContext.contentResolver
-    }
-
-    @Singleton
-    @Provides
-    fun provideDefaultRepository(
-        resolver: ContentResolver,
-        client: OkHttpClient,
-        transmittersApi: TransmittersApi,
-        entriesDao: EntriesDao,
-        transmittersDao: TransmittersDao,
-        sourcesDao: SourcesDao
-    ): Repository {
-        return DefaultRepository(
-            resolver,
-            client,
-            transmittersApi,
-            entriesDao,
-            sourcesDao,
-            transmittersDao
-        )
-    }
-}

app/src/main/java/com/rtbishop/look4sat/dagger/modules/ViewModelModule.kt

@@ -1,22 +0,0 @@
-package com.rtbishop.look4sat.dagger.modules
-
-import androidx.lifecycle.ViewModel
-import androidx.lifecycle.ViewModelProvider
-import com.rtbishop.look4sat.dagger.ViewModelFactory
-import com.rtbishop.look4sat.dagger.ViewModelKey
-import com.rtbishop.look4sat.ui.SharedViewModel
-import dagger.Binds
-import dagger.Module
-import dagger.multibindings.IntoMap
-
-@Module
-abstract class ViewModelModule {
-
-    @Binds
-    @IntoMap
-    @ViewModelKey(SharedViewModel::class)
-    abstract fun bindSharedViewModel(viewModel: SharedViewModel): ViewModel
-
-    @Binds
-    abstract fun bindViewModelFactory(factory: ViewModelFactory): ViewModelProvider.Factory
-}

app/src/main/java/com/rtbishop/look4sat/di/NetworkModule.kt

@@ -17,26 +17,29 @@
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
-package com.rtbishop.look4sat.dagger.modules
+package com.rtbishop.look4sat.di
 
 import com.rtbishop.look4sat.repo.remote.TransmittersApi
 import dagger.Module
 import dagger.Provides
+import dagger.hilt.InstallIn
+import dagger.hilt.android.components.ActivityComponent
+import dagger.hilt.android.scopes.ActivityScoped
 import okhttp3.OkHttpClient
 import retrofit2.Retrofit
 import retrofit2.converter.moshi.MoshiConverterFactory
-import javax.inject.Singleton
 
 @Module
+@InstallIn(ActivityComponent::class)
 class NetworkModule {
 
-    @Singleton
+    @ActivityScoped
     @Provides
     fun provideWebClient(): OkHttpClient {
         return OkHttpClient()
     }
 
-    @Singleton
+    @ActivityScoped
     @Provides
     fun provideTransApi(): TransmittersApi {
         return Retrofit.Builder()

app/src/main/java/com/rtbishop/look4sat/di/PersistenceModule.kt

@@ -17,7 +17,7 @@
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
-package com.rtbishop.look4sat.dagger.modules
+package com.rtbishop.look4sat.di
 
 import android.content.Context
 import androidx.room.Room
@@ -27,32 +27,36 @@ import com.rtbishop.look4sat.repo.local.SourcesDao
 import com.rtbishop.look4sat.repo.local.TransmittersDao
 import dagger.Module
 import dagger.Provides
-import javax.inject.Singleton
+import dagger.hilt.InstallIn
+import dagger.hilt.android.components.ActivityComponent
+import dagger.hilt.android.qualifiers.ActivityContext
+import dagger.hilt.android.scopes.ActivityScoped
 
 @Module
+@InstallIn(ActivityComponent::class)
 class PersistenceModule {
 
-    @Singleton
+    @ActivityScoped
     @Provides
     fun provideEntriesDao(db: SatelliteDb): EntriesDao {
         return db.entriesDao()
     }
 
-    @Singleton
+    @ActivityScoped
     @Provides
     fun provideTransDao(db: SatelliteDb): TransmittersDao {
         return db.transmittersDao()
     }
 
-    @Singleton
+    @ActivityScoped
     @Provides
     fun providesSourcesDao(db: SatelliteDb): SourcesDao {
         return db.sourcesDao()
     }
 
-    @Singleton
+    @ActivityScoped
     @Provides
-    fun provideSatDb(context: Context): SatelliteDb {
+    fun provideSatDb(@ActivityContext context: Context): SatelliteDb {
         return Room.databaseBuilder(context, SatelliteDb::class.java, "satDb").build()
     }
 }

app/src/main/java/com/rtbishop/look4sat/di/RepoModule.kt

@@ -0,0 +1,67 @@
+/*
+ * Look4Sat. Amateur radio and weather satellite tracker and passes predictor for Android.
+ * Copyright (C) 2019, 2020 Arty Bishop (bishop.arty@gmail.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+package com.rtbishop.look4sat.di
+
+import android.content.ContentResolver
+import android.content.Context
+import com.rtbishop.look4sat.repo.DefaultRepository
+import com.rtbishop.look4sat.repo.Repository
+import com.rtbishop.look4sat.repo.local.EntriesDao
+import com.rtbishop.look4sat.repo.local.SourcesDao
+import com.rtbishop.look4sat.repo.local.TransmittersDao
+import com.rtbishop.look4sat.repo.remote.TransmittersApi
+import dagger.Module
+import dagger.Provides
+import dagger.hilt.InstallIn
+import dagger.hilt.android.components.ActivityComponent
+import dagger.hilt.android.qualifiers.ActivityContext
+import dagger.hilt.android.scopes.ActivityScoped
+import okhttp3.OkHttpClient
+
+@Module
+@InstallIn(ActivityComponent::class)
+class RepoModule {
+
+    @ActivityScoped
+    @Provides
+    fun provideContentResolver(@ActivityContext context: Context): ContentResolver {
+        return context.applicationContext.contentResolver
+    }
+
+    @ActivityScoped
+    @Provides
+    fun provideDefaultRepository(
+        resolver: ContentResolver,
+        client: OkHttpClient,
+        transmittersApi: TransmittersApi,
+        entriesDao: EntriesDao,
+        transmittersDao: TransmittersDao,
+        sourcesDao: SourcesDao
+    ): Repository {
+        return DefaultRepository(
+            resolver,
+            client,
+            transmittersApi,
+            entriesDao,
+            sourcesDao,
+            transmittersDao
+        )
+    }
+}

app/src/main/java/com/rtbishop/look4sat/di/UtilityModule.kt

@@ -17,7 +17,7 @@
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
-package com.rtbishop.look4sat.dagger.modules
+package com.rtbishop.look4sat.di
 
 import android.content.Context
 import android.content.SharedPreferences
@@ -26,24 +26,28 @@ import androidx.preference.PreferenceManager
 import com.rtbishop.look4sat.utility.PrefsManager
 import dagger.Module
 import dagger.Provides
-import javax.inject.Singleton
+import dagger.hilt.InstallIn
+import dagger.hilt.android.components.ActivityComponent
+import dagger.hilt.android.qualifiers.ActivityContext
+import dagger.hilt.android.scopes.ActivityScoped
 
 @Module
+@InstallIn(ActivityComponent::class)
 class UtilityModule {
 
-    @Singleton
+    @ActivityScoped
     @Provides
-    fun provideSharedPreferences(context: Context): SharedPreferences {
+    fun provideSharedPreferences(@ActivityContext context: Context): SharedPreferences {
         return PreferenceManager.getDefaultSharedPreferences(context)
     }
 
-    @Singleton
+    @ActivityScoped
     @Provides
-    fun provideLocationManager(context: Context): LocationManager {
+    fun provideLocationManager(@ActivityContext context: Context): LocationManager {
         return context.getSystemService(Context.LOCATION_SERVICE) as LocationManager
     }
 
-    @Singleton
+    @ActivityScoped
     @Provides
     fun providePrefsManager(
         sharedPreferences: SharedPreferences,

app/src/main/java/com/rtbishop/look4sat/ui/activities/MainActivity.kt

@@ -1,4 +1,4 @@
-package com.rtbishop.look4sat.ui
+package com.rtbishop.look4sat.ui.activities
 
 import android.os.Bundle
 import androidx.appcompat.app.AppCompatActivity
@@ -6,7 +6,9 @@ import androidx.navigation.fragment.NavHostFragment
 import androidx.navigation.ui.setupWithNavController
 import com.rtbishop.look4sat.R
 import com.rtbishop.look4sat.databinding.ActivityMainBinding
+import dagger.hilt.android.AndroidEntryPoint
 
+@AndroidEntryPoint
 class MainActivity : AppCompatActivity() {
 
     override fun onCreate(savedInstanceState: Bundle?) {

app/src/main/java/com/rtbishop/look4sat/ui/fragments/EntriesFragment.kt

@@ -10,23 +10,19 @@ import androidx.fragment.app.activityViewModels
 import androidx.navigation.findNavController
 import androidx.recyclerview.widget.DividerItemDecoration
 import androidx.recyclerview.widget.LinearLayoutManager
-import com.rtbishop.look4sat.Look4SatApp
 import com.rtbishop.look4sat.R
-import com.rtbishop.look4sat.dagger.ViewModelFactory
+import com.rtbishop.look4sat.SharedViewModel
 import com.rtbishop.look4sat.data.SatEntry
 import com.rtbishop.look4sat.data.TleSource
 import com.rtbishop.look4sat.databinding.FragmentEntriesBinding
-import com.rtbishop.look4sat.ui.SharedViewModel
 import com.rtbishop.look4sat.ui.adapters.EntriesAdapter
-import javax.inject.Inject
+import dagger.hilt.android.AndroidEntryPoint
 
+@AndroidEntryPoint
 class EntriesFragment : Fragment(R.layout.fragment_entries) {
 
-    @Inject
-    lateinit var factory: ViewModelFactory
-
     private lateinit var binding: FragmentEntriesBinding
-    private val viewModel: SharedViewModel by activityViewModels { factory }
+    private val viewModel: SharedViewModel by activityViewModels()
     private val pickFileReqCode = 100
     private val entriesAdapter = EntriesAdapter()
     private var tleSources = listOf<TleSource>()
@@ -34,7 +30,6 @@ class EntriesFragment : Fragment(R.layout.fragment_entries) {
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
         binding = FragmentEntriesBinding.bind(view)
-        (requireActivity().application as Look4SatApp).appComponent.inject(this)
         setupComponents()
         setupObservers()
     }

app/src/main/java/com/rtbishop/look4sat/ui/fragments/InfoFragment.kt

@@ -28,7 +28,9 @@ import androidx.fragment.app.Fragment
 import com.rtbishop.look4sat.BuildConfig
 import com.rtbishop.look4sat.R
 import com.rtbishop.look4sat.databinding.FragmentInfoBinding
+import dagger.hilt.android.AndroidEntryPoint
 
+@AndroidEntryPoint
 class InfoFragment : Fragment(R.layout.fragment_info) {
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {

app/src/main/java/com/rtbishop/look4sat/ui/fragments/MapFragment.kt

@@ -14,15 +14,14 @@ import androidx.fragment.app.activityViewModels
 import androidx.lifecycle.lifecycleScope
 import androidx.preference.PreferenceManager
 import com.github.amsacode.predict4java.GroundStationPosition
-import com.rtbishop.look4sat.Look4SatApp
 import com.rtbishop.look4sat.R
-import com.rtbishop.look4sat.dagger.ViewModelFactory
+import com.rtbishop.look4sat.SharedViewModel
 import com.rtbishop.look4sat.data.Result
 import com.rtbishop.look4sat.data.SatItem
 import com.rtbishop.look4sat.data.SatPass
 import com.rtbishop.look4sat.databinding.FragmentMapBinding
-import com.rtbishop.look4sat.ui.SharedViewModel
 import com.rtbishop.look4sat.utility.PrefsManager
+import dagger.hilt.android.AndroidEntryPoint
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.delay
 import kotlinx.coroutines.launch
@@ -40,11 +39,9 @@ import javax.inject.Inject
 import kotlin.math.pow
 import kotlin.math.sqrt
 
+@AndroidEntryPoint
 class MapFragment : Fragment(R.layout.fragment_map) {
 
-    @Inject
-    lateinit var factory: ViewModelFactory
-
     @Inject
     lateinit var prefsManager: PrefsManager
 
@@ -54,13 +51,12 @@ class MapFragment : Fragment(R.layout.fragment_map) {
     private lateinit var footprintPaint: Paint
     private lateinit var selectedPass: SatPass
     private val dateNow = Date(System.currentTimeMillis())
-    private val viewModel: SharedViewModel by activityViewModels { factory }
+    private val viewModel: SharedViewModel by activityViewModels()
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
         binding = FragmentMapBinding.bind(view)
         mainActivity = requireActivity()
-        (mainActivity.application as Look4SatApp).appComponent.inject(this)
 
         val prefs = PreferenceManager.getDefaultSharedPreferences(mainActivity.applicationContext)
         Configuration.getInstance().load(mainActivity.applicationContext, prefs)

app/src/main/java/com/rtbishop/look4sat/ui/fragments/PassesFragment.kt

@@ -29,26 +29,23 @@ import androidx.fragment.app.Fragment
 import androidx.fragment.app.activityViewModels
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.SimpleItemAnimator
-import com.rtbishop.look4sat.Look4SatApp
 import com.rtbishop.look4sat.R
-import com.rtbishop.look4sat.dagger.ViewModelFactory
+import com.rtbishop.look4sat.SharedViewModel
 import com.rtbishop.look4sat.data.Result
 import com.rtbishop.look4sat.data.SatPass
 import com.rtbishop.look4sat.databinding.FragmentPassesBinding
-import com.rtbishop.look4sat.ui.SharedViewModel
 import com.rtbishop.look4sat.ui.adapters.PassesAdapter
 import com.rtbishop.look4sat.utility.PrefsManager
 import com.rtbishop.look4sat.utility.Utilities
 import com.rtbishop.look4sat.utility.Utilities.getRotationAnimator
 import com.rtbishop.look4sat.utility.Utilities.snack
+import dagger.hilt.android.AndroidEntryPoint
 import java.util.*
 import javax.inject.Inject
 
+@AndroidEntryPoint
 class PassesFragment : Fragment(R.layout.fragment_passes) {
 
-    @Inject
-    lateinit var factory: ViewModelFactory
-
     @Inject
     lateinit var prefsManager: PrefsManager
 
@@ -56,14 +53,13 @@ class PassesFragment : Fragment(R.layout.fragment_passes) {
     private lateinit var binding: FragmentPassesBinding
     private lateinit var animator: ObjectAnimator
     private lateinit var passesAdapter: PassesAdapter
-    private val viewModel: SharedViewModel by activityViewModels { factory }
+    private val viewModel: SharedViewModel by activityViewModels()
     private var isTimerSet: Boolean = false
     private var passes = mutableListOf<SatPass>()
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
         binding = FragmentPassesBinding.bind(view)
-        (requireActivity().application as Look4SatApp).appComponent.inject(this)
         setupComponents()
         setupObservers()
     }

app/src/main/java/com/rtbishop/look4sat/ui/fragments/PolarFragment.kt

@@ -29,27 +29,24 @@ import androidx.fragment.app.activityViewModels
 import androidx.lifecycle.lifecycleScope
 import androidx.navigation.fragment.navArgs
 import androidx.recyclerview.widget.LinearLayoutManager
-import com.rtbishop.look4sat.Look4SatApp
 import com.rtbishop.look4sat.R
-import com.rtbishop.look4sat.dagger.ViewModelFactory
+import com.rtbishop.look4sat.SharedViewModel
 import com.rtbishop.look4sat.data.Result
 import com.rtbishop.look4sat.data.SatPass
 import com.rtbishop.look4sat.databinding.FragmentPolarBinding
-import com.rtbishop.look4sat.ui.SharedViewModel
 import com.rtbishop.look4sat.ui.adapters.TransAdapter
 import com.rtbishop.look4sat.ui.views.PolarView
 import com.rtbishop.look4sat.utility.PrefsManager
+import dagger.hilt.android.AndroidEntryPoint
 import kotlinx.coroutines.delay
 import kotlinx.coroutines.launch
 import java.util.*
 import javax.inject.Inject
 import kotlin.math.round
 
+@AndroidEntryPoint
 class PolarFragment : Fragment(R.layout.fragment_polar), SensorEventListener {
 
-    @Inject
-    lateinit var factory: ViewModelFactory
-
     @Inject
     lateinit var prefsManager: PrefsManager
 
@@ -57,7 +54,7 @@ class PolarFragment : Fragment(R.layout.fragment_polar), SensorEventListener {
     private lateinit var binding: FragmentPolarBinding
     private lateinit var satPass: SatPass
     private lateinit var sensorManager: SensorManager
-    private val viewModel: SharedViewModel by activityViewModels { factory }
+    private val viewModel: SharedViewModel by activityViewModels()
     private val args: PolarFragmentArgs by navArgs()
     private val transmitterAdapter = TransAdapter()
     private var magneticDeclination = 0f
@@ -67,7 +64,6 @@ class PolarFragment : Fragment(R.layout.fragment_polar), SensorEventListener {
         super.onViewCreated(view, savedInstanceState)
         mainActivity = requireActivity()
         binding = FragmentPolarBinding.bind(view)
-        (mainActivity.application as Look4SatApp).appComponent.inject(this)
         sensorManager = mainActivity.getSystemService(Context.SENSOR_SERVICE) as SensorManager
         binding.recycler.apply {
             layoutManager = LinearLayoutManager(mainActivity)

app/src/main/java/com/rtbishop/look4sat/ui/fragments/PrefsFragment.kt

@@ -27,7 +27,9 @@ import androidx.preference.PreferenceFragmentCompat
 import com.rtbishop.look4sat.R
 import com.rtbishop.look4sat.utility.PrefsManager
 import com.rtbishop.look4sat.utility.Utilities.snack
+import dagger.hilt.android.AndroidEntryPoint
 
+@AndroidEntryPoint
 class PrefsFragment : PreferenceFragmentCompat(),
     SharedPreferences.OnSharedPreferenceChangeListener {
 

app/src/main/java/com/rtbishop/look4sat/ui/fragments/SourcesDialog.kt

@@ -24,11 +24,13 @@ import android.os.Bundle
 import android.view.ViewGroup
 import androidx.appcompat.app.AppCompatDialogFragment
 import androidx.recyclerview.widget.LinearLayoutManager
+import com.rtbishop.look4sat.SharedViewModel
 import com.rtbishop.look4sat.data.TleSource
 import com.rtbishop.look4sat.databinding.DialogSourcesBinding
-import com.rtbishop.look4sat.ui.SharedViewModel
 import com.rtbishop.look4sat.ui.adapters.SourcesAdapter
+import dagger.hilt.android.AndroidEntryPoint
 
+@AndroidEntryPoint
 class SourcesDialog(sources: List<TleSource>, private val viewModel: SharedViewModel) :
     AppCompatDialogFragment() {
 

build.gradle

@@ -28,7 +28,8 @@ buildscript {
         navigation_version = '2.3.0'
         lifecycle_version = '2.2.0'
         room_version = '2.2.5'
-        dagger_version = '2.29.1'
+        hilt_version = '2.29.1-alpha'
+        hilt_viewmodel_version = '1.0.0-alpha02'
         retrofit_version = '2.9.0'
         openStreetMap_version = '6.1.8'
         predict4java_version = '1.3.1'
@@ -39,6 +40,7 @@ buildscript {
     }
     dependencies {
         classpath "com.android.tools.build:gradle:$gradle_version"
+        classpath "com.google.dagger:hilt-android-gradle-plugin:$hilt_version"
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$gradle_plugin_version"
         classpath "androidx.navigation:navigation-safe-args-gradle-plugin:$navigation_version"
     }