├── .gitignore ├── CONTRIBUTING.md ├── LICENSE ├── README.md ├── app ├── .gitignore ├── build.gradle └── src │ ├── androidTest │ └── java │ │ └── com │ │ └── example │ │ └── android │ │ └── hilt │ │ └── AppTest.kt │ └── main │ ├── AndroidManifest.xml │ ├── java │ └── com │ │ └── example │ │ └── android │ │ └── hilt │ │ ├── LogApplication.kt │ │ ├── ServiceLocator.kt │ │ ├── data │ │ ├── AppDatabase.kt │ │ ├── Log.kt │ │ ├── LogDao.kt │ │ └── LoggerLocalDataSource.kt │ │ ├── navigator │ │ ├── AppNavigator.kt │ │ └── AppNavigatorImpl.kt │ │ ├── ui │ │ ├── ButtonsFragment.kt │ │ ├── LogsFragment.kt │ │ └── MainActivity.kt │ │ └── util │ │ └── DateFormatter.kt │ └── res │ ├── drawable-v24 │ └── ic_launcher_foreground.xml │ ├── drawable │ └── ic_launcher_background.xml │ ├── layout │ ├── activity_main.xml │ ├── fragment_buttons.xml │ ├── fragment_logs.xml │ └── text_row_item.xml │ ├── mipmap-anydpi-v26 │ ├── ic_launcher.xml │ └── ic_launcher_round.xml │ ├── mipmap-hdpi │ ├── ic_launcher.png │ └── ic_launcher_round.png │ ├── mipmap-mdpi │ ├── ic_launcher.png │ └── ic_launcher_round.png │ ├── mipmap-xhdpi │ ├── ic_launcher.png │ └── ic_launcher_round.png │ ├── mipmap-xxhdpi │ ├── ic_launcher.png │ └── ic_launcher_round.png │ ├── mipmap-xxxhdpi │ ├── ic_launcher.png │ └── ic_launcher_round.png │ └── values │ ├── colors.xml │ ├── strings.xml │ └── styles.xml ├── build.gradle ├── gradle.properties ├── gradle └── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── gradlew ├── gradlew.bat └── settings.gradle /.gitignore: -------------------------------------------------------------------------------- 1 | *.iml 2 | .gradle 3 | /local.properties 4 | /.idea 5 | .DS_Store 6 | /build 7 | /captures 8 | .externalNativeBuild 9 | -------------------------------------------------------------------------------- /CONTRIBUTING.md: -------------------------------------------------------------------------------- 1 | # How to become a contributor and submit your own code 2 | 3 | ## Contributor License Agreements 4 | 5 | We'd love to accept your sample apps and patches! 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We also recommend that a 187 | file or class name and description of purpose be included on the 188 | same "printed page" as the copyright notice for easier 189 | identification within third-party archives. 190 | 191 | Copyright {yyyy} {name of copyright owner} 192 | 193 | Licensed under the Apache License, Version 2.0 (the "License"); 194 | you may not use this file except in compliance with the License. 195 | You may obtain a copy of the License at 196 | 197 | http://www.apache.org/licenses/LICENSE-2.0 198 | 199 | Unless required by applicable law or agreed to in writing, software 200 | distributed under the License is distributed on an "AS IS" BASIS, 201 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 202 | See the License for the specific language governing permissions and 203 | limitations under the License. -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # Using Hilt in your Android app 2 | 3 | This folder contains the source code for the "Using Hilt in your Android app" codelab. 4 | 5 | The codelab is built in multiple GitHub branches: 6 | * `main` is the codelab's starting point. 7 | * `solution` contains the solution to this codelab. 8 | 9 | 10 | # Introduction 11 | Dependency injection is a technique widely used in programming and well suited 12 | to Android development. By following the principles of dependency injection, you 13 | lay the groundwork for a good app architecture. 14 | 15 | Implementing dependency injection provides you with the following advantages: 16 | * Reusability of code. 17 | * Ease of refactoring. 18 | * Ease of testing. 19 | 20 | 21 | # Pre-requisites 22 | * Experience with Kotlin syntax. 23 | * You understand Dependency Injection. 24 | 25 | # Getting Started 26 | 1. Install Android Studio, if you don't already have it. 27 | 2. Download the sample. 28 | 3. Import the sample into Android Studio. 29 | 4. Build and run the sample. 30 | 31 | 32 | # Comparison between different branches 33 | * [Full codelab comparison](https://github.com/googlecodelabs/android-hilt/compare/main...solution) 34 | 35 | 36 | # License 37 | 38 | ``` 39 | Copyright (C) 2020 The Android Open Source Project 40 | 41 | Licensed under the Apache License, Version 2.0 (the "License"); 42 | you may not use this file except in compliance with the License. 43 | You may obtain a copy of the License at 44 | 45 | https://www.apache.org/licenses/LICENSE-2.0 46 | 47 | Unless required by applicable law or agreed to in writing, software 48 | distributed under the License is distributed on an "AS IS" BASIS, 49 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 50 | See the License for the specific language governing permissions and 51 | limitations under the License. 52 | ``` -------------------------------------------------------------------------------- /app/.gitignore: -------------------------------------------------------------------------------- 1 | *.iml 2 | .gradle 3 | /local.properties 4 | /.idea/caches 5 | /.idea/libraries 6 | /.idea/modules.xml 7 | /.idea/workspace.xml 8 | /.idea/navEditor.xml 9 | /.idea/assetWizardSettings.xml 10 | .DS_Store 11 | /build 12 | /captures 13 | .externalNativeBuild 14 | .cxx 15 | -------------------------------------------------------------------------------- /app/build.gradle: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (C) 2020 The Android Open Source Project 3 | * 4 | * Licensed under the Apache License, Version 2.0 (the "License"); 5 | * you may not use this file except in compliance with the License. 6 | * You may obtain a copy of the License at 7 | * 8 | * http://www.apache.org/licenses/LICENSE-2.0 9 | * 10 | * Unless required by applicable law or agreed to in writing, software 11 | * distributed under the License is distributed on an "AS IS" BASIS, 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | * See the License for the specific language governing permissions and 14 | * limitations under the License. 15 | */ 16 | 17 | plugins { 18 | id 'com.android.application' 19 | id 'kotlin-android' 20 | id 'kotlin-parcelize' 21 | id 'kotlin-kapt' 22 | id 'dagger.hilt.android.plugin' 23 | } 24 | 25 | android { 26 | compileSdkVersion 33 27 | 28 | 29 | defaultConfig { 30 | applicationId "com.example.android.hilt" 31 | minSdkVersion 16 32 | targetSdkVersion 33 33 | versionCode 1 34 | versionName "1.0" 35 | 36 | testInstrumentationRunner 'androidx.test.runner.AndroidJUnitRunner' 37 | 38 | javaCompileOptions { 39 | annotationProcessorOptions { 40 | arguments["room.incremental"] = "true" 41 | } 42 | } 43 | } 44 | 45 | compileOptions { 46 | sourceCompatibility 1.8 47 | targetCompatibility 1.8 48 | } 49 | } 50 | 51 | dependencies { 52 | 53 | implementation 'androidx.appcompat:appcompat:1.5.1' 54 | implementation 'androidx.core:core-ktx:1.9.0' 55 | implementation 'androidx.constraintlayout:constraintlayout:2.1.4' 56 | implementation 'androidx.recyclerview:recyclerview:1.2.1' 57 | 58 | // Room 59 | implementation "androidx.room:room-runtime:2.4.3" 60 | kapt "androidx.room:room-compiler:2.4.3" 61 | 62 | // Testing dependencies 63 | androidTestImplementation "junit:junit:4.13.2" 64 | androidTestImplementation "androidx.test:core-ktx:1.4.0" 65 | androidTestImplementation "androidx.test.ext:junit-ktx:1.1.3" 66 | androidTestImplementation "androidx.test:rules:1.4.0" 67 | androidTestImplementation "androidx.test.espresso:espresso-core:3.4.0" 68 | 69 | // Hilt dependencies 70 | implementation "com.google.dagger:hilt-android:$hilt_version" 71 | kapt "com.google.dagger:hilt-android-compiler:$hilt_version" 72 | } 73 | -------------------------------------------------------------------------------- /app/src/androidTest/java/com/example/android/hilt/AppTest.kt: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (C) 2020 The Android Open Source Project 3 | * 4 | * Licensed under the Apache License, Version 2.0 (the "License"); 5 | * you may not use this file except in compliance with the License. 6 | * You may obtain a copy of the License at 7 | * 8 | * http://www.apache.org/licenses/LICENSE-2.0 9 | * 10 | * Unless required by applicable law or agreed to in writing, software 11 | * distributed under the License is distributed on an "AS IS" BASIS, 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | * See the License for the specific language governing permissions and 14 | * limitations under the License. 15 | */ 16 | 17 | package com.example.android.hilt 18 | 19 | import androidx.test.core.app.ActivityScenario 20 | import androidx.test.espresso.Espresso.onView 21 | import androidx.test.espresso.action.ViewActions.click 22 | import androidx.test.espresso.assertion.ViewAssertions.matches 23 | import androidx.test.espresso.matcher.ViewMatchers.isDisplayed 24 | import androidx.test.espresso.matcher.ViewMatchers.withId 25 | import androidx.test.espresso.matcher.ViewMatchers.withText 26 | import androidx.test.ext.junit.runners.AndroidJUnit4 27 | import androidx.test.platform.app.InstrumentationRegistry.getInstrumentation 28 | import com.example.android.hilt.ui.MainActivity 29 | import org.hamcrest.Matchers.containsString 30 | import org.junit.After 31 | import org.junit.Test 32 | import org.junit.runner.RunWith 33 | 34 | @RunWith(AndroidJUnit4::class) 35 | class AppTest { 36 | 37 | @After 38 | fun tearDown() { 39 | // Remove logs after the test finishes 40 | ServiceLocator(getInstrumentation().targetContext).loggerLocalDataSource.removeLogs() 41 | } 42 | 43 | @Test 44 | fun happyPath() { 45 | ActivityScenario.launch(MainActivity::class.java) 46 | 47 | // Check Buttons fragment screen is displayed 48 | onView(withId(R.id.textView)).check(matches(isDisplayed())) 49 | 50 | // Tap on Button 1 51 | onView(withId(R.id.button1)).perform(click()) 52 | 53 | // Navigate to Logs screen 54 | onView(withId(R.id.all_logs)).perform(click()) 55 | 56 | // Check Logs fragment screen is displayed 57 | onView(withText(containsString("Interaction with 'Button 1'"))) 58 | .check(matches(isDisplayed())) 59 | } 60 | } 61 | -------------------------------------------------------------------------------- /app/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 16 | 17 | 20 | 21 | 29 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | -------------------------------------------------------------------------------- /app/src/main/java/com/example/android/hilt/LogApplication.kt: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (C) 2020 The Android Open Source Project 3 | * 4 | * Licensed under the Apache License, Version 2.0 (the "License"); 5 | * you may not use this file except in compliance with the License. 6 | * You may obtain a copy of the License at 7 | * 8 | * http://www.apache.org/licenses/LICENSE-2.0 9 | * 10 | * Unless required by applicable law or agreed to in writing, software 11 | * distributed under the License is distributed on an "AS IS" BASIS, 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | * See the License for the specific language governing permissions and 14 | * limitations under the License. 15 | */ 16 | 17 | package com.example.android.hilt 18 | 19 | import android.app.Application 20 | 21 | class LogApplication : Application() { 22 | 23 | lateinit var serviceLocator: ServiceLocator 24 | 25 | override fun onCreate() { 26 | super.onCreate() 27 | serviceLocator = ServiceLocator(applicationContext) 28 | } 29 | } 30 | -------------------------------------------------------------------------------- /app/src/main/java/com/example/android/hilt/ServiceLocator.kt: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (C) 2020 The Android Open Source Project 3 | * 4 | * Licensed under the Apache License, Version 2.0 (the "License"); 5 | * you may not use this file except in compliance with the License. 6 | * You may obtain a copy of the License at 7 | * 8 | * http://www.apache.org/licenses/LICENSE-2.0 9 | * 10 | * Unless required by applicable law or agreed to in writing, software 11 | * distributed under the License is distributed on an "AS IS" BASIS, 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | * See the License for the specific language governing permissions and 14 | * limitations under the License. 15 | */ 16 | 17 | package com.example.android.hilt 18 | 19 | import android.content.Context 20 | import androidx.fragment.app.FragmentActivity 21 | import androidx.room.Room 22 | import com.example.android.hilt.data.AppDatabase 23 | import com.example.android.hilt.data.LoggerLocalDataSource 24 | import com.example.android.hilt.navigator.AppNavigator 25 | import com.example.android.hilt.navigator.AppNavigatorImpl 26 | import com.example.android.hilt.util.DateFormatter 27 | 28 | class ServiceLocator(applicationContext: Context) { 29 | 30 | private val logsDatabase = Room.databaseBuilder( 31 | applicationContext, 32 | AppDatabase::class.java, 33 | "logging.db" 34 | ).build() 35 | 36 | val loggerLocalDataSource = LoggerLocalDataSource(logsDatabase.logDao()) 37 | 38 | fun provideDateFormatter() = DateFormatter() 39 | 40 | fun provideNavigator(activity: FragmentActivity): AppNavigator { 41 | return AppNavigatorImpl(activity) 42 | } 43 | } 44 | -------------------------------------------------------------------------------- /app/src/main/java/com/example/android/hilt/data/AppDatabase.kt: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (C) 2020 The Android Open Source Project 3 | * 4 | * Licensed under the Apache License, Version 2.0 (the "License"); 5 | * you may not use this file except in compliance with the License. 6 | * You may obtain a copy of the License at 7 | * 8 | * http://www.apache.org/licenses/LICENSE-2.0 9 | * 10 | * Unless required by applicable law or agreed to in writing, software 11 | * distributed under the License is distributed on an "AS IS" BASIS, 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | * See the License for the specific language governing permissions and 14 | * limitations under the License. 15 | */ 16 | 17 | package com.example.android.hilt.data 18 | 19 | import androidx.room.Database 20 | import androidx.room.RoomDatabase 21 | 22 | /** 23 | * SQLite Database for storing the logs. 24 | */ 25 | @Database(entities = arrayOf(Log::class), version = 1, exportSchema = false) 26 | abstract class AppDatabase : RoomDatabase() { 27 | abstract fun logDao(): LogDao 28 | } 29 | -------------------------------------------------------------------------------- /app/src/main/java/com/example/android/hilt/data/Log.kt: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (C) 2020 The Android Open Source Project 3 | * 4 | * Licensed under the Apache License, Version 2.0 (the "License"); 5 | * you may not use this file except in compliance with the License. 6 | * You may obtain a copy of the License at 7 | * 8 | * http://www.apache.org/licenses/LICENSE-2.0 9 | * 10 | * Unless required by applicable law or agreed to in writing, software 11 | * distributed under the License is distributed on an "AS IS" BASIS, 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | * See the License for the specific language governing permissions and 14 | * limitations under the License. 15 | */ 16 | 17 | package com.example.android.hilt.data 18 | 19 | import androidx.room.Entity 20 | import androidx.room.PrimaryKey 21 | 22 | /** 23 | * Data class that represent the a table in the database. 24 | */ 25 | @Entity(tableName = "logs") 26 | data class Log(val msg: String, val timestamp: Long) { 27 | 28 | @PrimaryKey(autoGenerate = true) 29 | var id: Long = 0 30 | } 31 | -------------------------------------------------------------------------------- /app/src/main/java/com/example/android/hilt/data/LogDao.kt: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (C) 2020 The Android Open Source Project 3 | * 4 | * Licensed under the Apache License, Version 2.0 (the "License"); 5 | * you may not use this file except in compliance with the License. 6 | * You may obtain a copy of the License at 7 | * 8 | * http://www.apache.org/licenses/LICENSE-2.0 9 | * 10 | * Unless required by applicable law or agreed to in writing, software 11 | * distributed under the License is distributed on an "AS IS" BASIS, 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | * See the License for the specific language governing permissions and 14 | * limitations under the License. 15 | */ 16 | 17 | package com.example.android.hilt.data 18 | 19 | import androidx.room.Dao 20 | import androidx.room.Insert 21 | import androidx.room.Query 22 | 23 | /** 24 | * Data access object to query the database. 25 | */ 26 | @Dao 27 | interface LogDao { 28 | 29 | @Query("SELECT * FROM logs ORDER BY id DESC") 30 | fun getAll(): List 31 | 32 | @Insert 33 | fun insertAll(vararg logs: Log) 34 | 35 | @Query("DELETE FROM logs") 36 | fun nukeTable() 37 | } 38 | -------------------------------------------------------------------------------- /app/src/main/java/com/example/android/hilt/data/LoggerLocalDataSource.kt: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (C) 2020 The Android Open Source Project 3 | * 4 | * Licensed under the Apache License, Version 2.0 (the "License"); 5 | * you may not use this file except in compliance with the License. 6 | * You may obtain a copy of the License at 7 | * 8 | * http://www.apache.org/licenses/LICENSE-2.0 9 | * 10 | * Unless required by applicable law or agreed to in writing, software 11 | * distributed under the License is distributed on an "AS IS" BASIS, 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | * See the License for the specific language governing permissions and 14 | * limitations under the License. 15 | */ 16 | 17 | package com.example.android.hilt.data 18 | 19 | import android.os.Handler 20 | import android.os.Looper 21 | import java.util.concurrent.ExecutorService 22 | import java.util.concurrent.Executors 23 | 24 | /** 25 | * Data manager class that handles data manipulation between the database and the UI. 26 | */ 27 | class LoggerLocalDataSource(private val logDao: LogDao) { 28 | 29 | private val executorService: ExecutorService = Executors.newFixedThreadPool(4) 30 | private val mainThreadHandler by lazy { 31 | Handler(Looper.getMainLooper()) 32 | } 33 | 34 | fun addLog(msg: String) { 35 | executorService.execute { 36 | logDao.insertAll( 37 | Log( 38 | msg, 39 | System.currentTimeMillis() 40 | ) 41 | ) 42 | } 43 | } 44 | 45 | fun getAllLogs(callback: (List) -> Unit) { 46 | executorService.execute { 47 | val logs = logDao.getAll() 48 | mainThreadHandler.post { callback(logs) } 49 | } 50 | } 51 | 52 | fun removeLogs() { 53 | executorService.execute { 54 | logDao.nukeTable() 55 | } 56 | } 57 | } 58 | -------------------------------------------------------------------------------- /app/src/main/java/com/example/android/hilt/navigator/AppNavigator.kt: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (C) 2020 The Android Open Source Project 3 | * 4 | * Licensed under the Apache License, Version 2.0 (the "License"); 5 | * you may not use this file except in compliance with the License. 6 | * You may obtain a copy of the License at 7 | * 8 | * http://www.apache.org/licenses/LICENSE-2.0 9 | * 10 | * Unless required by applicable law or agreed to in writing, software 11 | * distributed under the License is distributed on an "AS IS" BASIS, 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | * See the License for the specific language governing permissions and 14 | * limitations under the License. 15 | */ 16 | 17 | package com.example.android.hilt.navigator 18 | 19 | /** 20 | * Available screens. 21 | */ 22 | enum class Screens { 23 | BUTTONS, 24 | LOGS 25 | } 26 | 27 | /** 28 | * Interfaces that defines an app navigator. 29 | */ 30 | interface AppNavigator { 31 | // Navigate to a given screen. 32 | fun navigateTo(screen: Screens) 33 | } 34 | -------------------------------------------------------------------------------- /app/src/main/java/com/example/android/hilt/navigator/AppNavigatorImpl.kt: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (C) 2020 The Android Open Source Project 3 | * 4 | * Licensed under the Apache License, Version 2.0 (the "License"); 5 | * you may not use this file except in compliance with the License. 6 | * You may obtain a copy of the License at 7 | * 8 | * http://www.apache.org/licenses/LICENSE-2.0 9 | * 10 | * Unless required by applicable law or agreed to in writing, software 11 | * distributed under the License is distributed on an "AS IS" BASIS, 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | * See the License for the specific language governing permissions and 14 | * limitations under the License. 15 | */ 16 | 17 | package com.example.android.hilt.navigator 18 | 19 | import androidx.fragment.app.FragmentActivity 20 | import com.example.android.hilt.R 21 | import com.example.android.hilt.ui.ButtonsFragment 22 | import com.example.android.hilt.ui.LogsFragment 23 | 24 | /** 25 | * Navigator implementation. 26 | */ 27 | class AppNavigatorImpl(private val activity: FragmentActivity) : AppNavigator { 28 | 29 | override fun navigateTo(screen: Screens) { 30 | val fragment = when (screen) { 31 | Screens.BUTTONS -> ButtonsFragment() 32 | Screens.LOGS -> LogsFragment() 33 | } 34 | 35 | activity.supportFragmentManager.beginTransaction() 36 | .replace(R.id.main_container, fragment) 37 | .addToBackStack(fragment::class.java.canonicalName) 38 | .commit() 39 | } 40 | } 41 | -------------------------------------------------------------------------------- /app/src/main/java/com/example/android/hilt/ui/ButtonsFragment.kt: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (C) 2020 The Android Open Source Project 3 | * 4 | * Licensed under the Apache License, Version 2.0 (the "License"); 5 | * you may not use this file except in compliance with the License. 6 | * You may obtain a copy of the License at 7 | * 8 | * http://www.apache.org/licenses/LICENSE-2.0 9 | * 10 | * Unless required by applicable law or agreed to in writing, software 11 | * distributed under the License is distributed on an "AS IS" BASIS, 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | * See the License for the specific language governing permissions and 14 | * limitations under the License. 15 | */ 16 | 17 | package com.example.android.hilt.ui 18 | 19 | import android.content.Context 20 | import android.os.Bundle 21 | import android.view.LayoutInflater 22 | import android.view.View 23 | import android.view.ViewGroup 24 | import android.widget.Button 25 | import androidx.fragment.app.Fragment 26 | import com.example.android.hilt.LogApplication 27 | import com.example.android.hilt.R 28 | import com.example.android.hilt.data.LoggerLocalDataSource 29 | import com.example.android.hilt.navigator.AppNavigator 30 | import com.example.android.hilt.navigator.Screens 31 | 32 | /** 33 | * Fragment that displays buttons whose interactions are recorded. 34 | */ 35 | class ButtonsFragment : Fragment() { 36 | 37 | private lateinit var logger: LoggerLocalDataSource 38 | private lateinit var navigator: AppNavigator 39 | 40 | override fun onCreateView( 41 | inflater: LayoutInflater, 42 | container: ViewGroup?, 43 | savedInstanceState: Bundle? 44 | ): View? { 45 | return inflater.inflate(R.layout.fragment_buttons, container, false) 46 | } 47 | 48 | override fun onAttach(context: Context) { 49 | super.onAttach(context) 50 | 51 | populateFields(context) 52 | } 53 | 54 | private fun populateFields(context: Context) { 55 | logger = (context.applicationContext as LogApplication). 56 | serviceLocator.loggerLocalDataSource 57 | 58 | navigator = (context.applicationContext as LogApplication). 59 | serviceLocator.provideNavigator(requireActivity()) 60 | } 61 | 62 | override fun onViewCreated(view: View, savedInstanceState: Bundle?) { 63 | view.findViewById