diff --git a/app/src/androidTest/java/com/google/android/samples/socialite/ExampleInstrumentedTest.kt b/app/src/androidTest/kotlin/com/google/android/samples/socialite/ExampleInstrumentedTest.kt similarity index 100% rename from app/src/androidTest/java/com/google/android/samples/socialite/ExampleInstrumentedTest.kt rename to app/src/androidTest/kotlin/com/google/android/samples/socialite/ExampleInstrumentedTest.kt diff --git a/app/src/androidTest/java/com/google/android/samples/socialite/ReceiveTurbine.kt b/app/src/androidTest/kotlin/com/google/android/samples/socialite/ReceiveTurbine.kt similarity index 100% rename from app/src/androidTest/java/com/google/android/samples/socialite/ReceiveTurbine.kt rename to app/src/androidTest/kotlin/com/google/android/samples/socialite/ReceiveTurbine.kt diff --git a/app/src/androidTest/java/com/google/android/samples/socialite/data/AppDatabaseTest.kt b/app/src/androidTest/kotlin/com/google/android/samples/socialite/data/AppDatabaseTest.kt similarity index 100% rename from app/src/androidTest/java/com/google/android/samples/socialite/data/AppDatabaseTest.kt rename to app/src/androidTest/kotlin/com/google/android/samples/socialite/data/AppDatabaseTest.kt diff --git a/app/src/androidTest/java/com/google/android/samples/socialite/data/ChatDaoTest.kt b/app/src/androidTest/kotlin/com/google/android/samples/socialite/data/ChatDaoTest.kt similarity index 100% rename from app/src/androidTest/java/com/google/android/samples/socialite/data/ChatDaoTest.kt rename to app/src/androidTest/kotlin/com/google/android/samples/socialite/data/ChatDaoTest.kt diff --git a/app/src/androidTest/java/com/google/android/samples/socialite/data/TestDatabase.kt b/app/src/androidTest/kotlin/com/google/android/samples/socialite/data/TestDatabase.kt similarity index 100% rename from app/src/androidTest/java/com/google/android/samples/socialite/data/TestDatabase.kt rename to app/src/androidTest/kotlin/com/google/android/samples/socialite/data/TestDatabase.kt diff --git a/app/src/androidTest/java/com/google/android/samples/socialite/repository/ChatRepositoryTest.kt b/app/src/androidTest/kotlin/com/google/android/samples/socialite/repository/ChatRepositoryTest.kt similarity index 100% rename from app/src/androidTest/java/com/google/android/samples/socialite/repository/ChatRepositoryTest.kt rename to app/src/androidTest/kotlin/com/google/android/samples/socialite/repository/ChatRepositoryTest.kt diff --git a/app/src/androidTest/java/com/google/android/samples/socialite/repository/TestRepository.kt b/app/src/androidTest/kotlin/com/google/android/samples/socialite/repository/TestRepository.kt similarity index 100% rename from app/src/androidTest/java/com/google/android/samples/socialite/repository/TestRepository.kt rename to app/src/androidTest/kotlin/com/google/android/samples/socialite/repository/TestRepository.kt diff --git a/app/src/androidTest/java/com/google/android/samples/socialite/ui/chat/ChatViewModelTest.kt b/app/src/androidTest/kotlin/com/google/android/samples/socialite/ui/chat/ChatViewModelTest.kt similarity index 100% rename from app/src/androidTest/java/com/google/android/samples/socialite/ui/chat/ChatViewModelTest.kt rename to app/src/androidTest/kotlin/com/google/android/samples/socialite/ui/chat/ChatViewModelTest.kt diff --git a/app/src/androidTest/java/com/google/android/samples/socialite/ui/home/HomeViewModelTest.kt b/app/src/androidTest/kotlin/com/google/android/samples/socialite/ui/home/HomeViewModelTest.kt similarity index 100% rename from app/src/androidTest/java/com/google/android/samples/socialite/ui/home/HomeViewModelTest.kt rename to app/src/androidTest/kotlin/com/google/android/samples/socialite/ui/home/HomeViewModelTest.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/AssetFileProvider.kt b/app/src/main/kotlin/com/google/android/samples/socialite/AssetFileProvider.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/AssetFileProvider.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/AssetFileProvider.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/BubbleActivity.kt b/app/src/main/kotlin/com/google/android/samples/socialite/BubbleActivity.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/BubbleActivity.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/BubbleActivity.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/MainActivity.kt b/app/src/main/kotlin/com/google/android/samples/socialite/MainActivity.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/MainActivity.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/MainActivity.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/ReplyReceiver.kt b/app/src/main/kotlin/com/google/android/samples/socialite/ReplyReceiver.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/ReplyReceiver.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/ReplyReceiver.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/SocialApp.kt b/app/src/main/kotlin/com/google/android/samples/socialite/SocialApp.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/SocialApp.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/SocialApp.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/data/AppDatabase.kt b/app/src/main/kotlin/com/google/android/samples/socialite/data/AppDatabase.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/data/AppDatabase.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/data/AppDatabase.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/data/ChatDao.kt b/app/src/main/kotlin/com/google/android/samples/socialite/data/ChatDao.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/data/ChatDao.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/data/ChatDao.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/data/ChatWithLastMessage.kt b/app/src/main/kotlin/com/google/android/samples/socialite/data/ChatWithLastMessage.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/data/ChatWithLastMessage.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/data/ChatWithLastMessage.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/data/ContactDao.kt b/app/src/main/kotlin/com/google/android/samples/socialite/data/ContactDao.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/data/ContactDao.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/data/ContactDao.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/data/DatabaseManager.kt b/app/src/main/kotlin/com/google/android/samples/socialite/data/DatabaseManager.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/data/DatabaseManager.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/data/DatabaseManager.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/data/MessageDao.kt b/app/src/main/kotlin/com/google/android/samples/socialite/data/MessageDao.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/data/MessageDao.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/data/MessageDao.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/data/utils/ExtensionFunctions.kt b/app/src/main/kotlin/com/google/android/samples/socialite/data/utils/ExtensionFunctions.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/data/utils/ExtensionFunctions.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/data/utils/ExtensionFunctions.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/di/DatabaseModule.kt b/app/src/main/kotlin/com/google/android/samples/socialite/di/DatabaseModule.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/di/DatabaseModule.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/di/DatabaseModule.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/model/Chat.kt b/app/src/main/kotlin/com/google/android/samples/socialite/model/Chat.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/model/Chat.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/model/Chat.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/model/ChatDetail.kt b/app/src/main/kotlin/com/google/android/samples/socialite/model/ChatDetail.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/model/ChatDetail.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/model/ChatDetail.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/model/Contact.kt b/app/src/main/kotlin/com/google/android/samples/socialite/model/Contact.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/model/Contact.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/model/Contact.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/model/Message.kt b/app/src/main/kotlin/com/google/android/samples/socialite/model/Message.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/model/Message.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/model/Message.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/repository/ChatRepository.kt b/app/src/main/kotlin/com/google/android/samples/socialite/repository/ChatRepository.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/repository/ChatRepository.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/repository/ChatRepository.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/repository/NotificationHelper.kt b/app/src/main/kotlin/com/google/android/samples/socialite/repository/NotificationHelper.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/repository/NotificationHelper.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/repository/NotificationHelper.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/ui/Bubble.kt b/app/src/main/kotlin/com/google/android/samples/socialite/ui/Bubble.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/ui/Bubble.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/ui/Bubble.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/ui/Color.kt b/app/src/main/kotlin/com/google/android/samples/socialite/ui/Color.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/ui/Color.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/ui/Color.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/ui/ContactRow.kt b/app/src/main/kotlin/com/google/android/samples/socialite/ui/ContactRow.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/ui/ContactRow.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/ui/ContactRow.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/ui/Flow.kt b/app/src/main/kotlin/com/google/android/samples/socialite/ui/Flow.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/ui/Flow.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/ui/Flow.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/ui/IconPainter.kt b/app/src/main/kotlin/com/google/android/samples/socialite/ui/IconPainter.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/ui/IconPainter.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/ui/IconPainter.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/ui/Main.kt b/app/src/main/kotlin/com/google/android/samples/socialite/ui/Main.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/ui/Main.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/ui/Main.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/ui/Theme.kt b/app/src/main/kotlin/com/google/android/samples/socialite/ui/Theme.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/ui/Theme.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/ui/Theme.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/ui/camera/Camera.kt b/app/src/main/kotlin/com/google/android/samples/socialite/ui/camera/Camera.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/ui/camera/Camera.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/ui/camera/Camera.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/ui/camera/CameraAndRecordAudioPermission.kt b/app/src/main/kotlin/com/google/android/samples/socialite/ui/camera/CameraAndRecordAudioPermission.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/ui/camera/CameraAndRecordAudioPermission.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/ui/camera/CameraAndRecordAudioPermission.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/ui/camera/CameraProviderManager.kt b/app/src/main/kotlin/com/google/android/samples/socialite/ui/camera/CameraProviderManager.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/ui/camera/CameraProviderManager.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/ui/camera/CameraProviderManager.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/ui/camera/CameraViewModel.kt b/app/src/main/kotlin/com/google/android/samples/socialite/ui/camera/CameraViewModel.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/ui/camera/CameraViewModel.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/ui/camera/CameraViewModel.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/ui/camera/CameraXViewfinder.kt b/app/src/main/kotlin/com/google/android/samples/socialite/ui/camera/CameraXViewfinder.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/ui/camera/CameraXViewfinder.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/ui/camera/CameraXViewfinder.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/ui/camera/Media.kt b/app/src/main/kotlin/com/google/android/samples/socialite/ui/camera/Media.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/ui/camera/Media.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/ui/camera/Media.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/ui/camera/ViewFinder.kt b/app/src/main/kotlin/com/google/android/samples/socialite/ui/camera/ViewFinder.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/ui/camera/ViewFinder.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/ui/camera/ViewFinder.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/ui/camera/di/CameraProviderBindingModule.kt b/app/src/main/kotlin/com/google/android/samples/socialite/ui/camera/di/CameraProviderBindingModule.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/ui/camera/di/CameraProviderBindingModule.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/ui/camera/di/CameraProviderBindingModule.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/ui/chat/ChatMessage.kt b/app/src/main/kotlin/com/google/android/samples/socialite/ui/chat/ChatMessage.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/ui/chat/ChatMessage.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/ui/chat/ChatMessage.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/ui/chat/ChatScreen.kt b/app/src/main/kotlin/com/google/android/samples/socialite/ui/chat/ChatScreen.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/ui/chat/ChatScreen.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/ui/chat/ChatScreen.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/ui/chat/ChatViewModel.kt b/app/src/main/kotlin/com/google/android/samples/socialite/ui/chat/ChatViewModel.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/ui/chat/ChatViewModel.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/ui/chat/ChatViewModel.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/ui/home/ChatList.kt b/app/src/main/kotlin/com/google/android/samples/socialite/ui/home/ChatList.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/ui/home/ChatList.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/ui/home/ChatList.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/ui/home/Home.kt b/app/src/main/kotlin/com/google/android/samples/socialite/ui/home/Home.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/ui/home/Home.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/ui/home/Home.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/ui/home/HomeBackground.kt b/app/src/main/kotlin/com/google/android/samples/socialite/ui/home/HomeBackground.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/ui/home/HomeBackground.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/ui/home/HomeBackground.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/ui/home/HomeViewModel.kt b/app/src/main/kotlin/com/google/android/samples/socialite/ui/home/HomeViewModel.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/ui/home/HomeViewModel.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/ui/home/HomeViewModel.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/ui/home/Settings.kt b/app/src/main/kotlin/com/google/android/samples/socialite/ui/home/Settings.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/ui/home/Settings.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/ui/home/Settings.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/ui/home/SettingsViewModel.kt b/app/src/main/kotlin/com/google/android/samples/socialite/ui/home/SettingsViewModel.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/ui/home/SettingsViewModel.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/ui/home/SettingsViewModel.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/ui/home/timeline/Timeline.kt b/app/src/main/kotlin/com/google/android/samples/socialite/ui/home/timeline/Timeline.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/ui/home/timeline/Timeline.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/ui/home/timeline/Timeline.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/ui/home/timeline/TimelineMediaItem.kt b/app/src/main/kotlin/com/google/android/samples/socialite/ui/home/timeline/TimelineMediaItem.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/ui/home/timeline/TimelineMediaItem.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/ui/home/timeline/TimelineMediaItem.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/ui/home/timeline/TimelineViewModel.kt b/app/src/main/kotlin/com/google/android/samples/socialite/ui/home/timeline/TimelineViewModel.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/ui/home/timeline/TimelineViewModel.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/ui/home/timeline/TimelineViewModel.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/ui/photopicker/PhotoPickerViewModel.kt b/app/src/main/kotlin/com/google/android/samples/socialite/ui/photopicker/PhotoPickerViewModel.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/ui/photopicker/PhotoPickerViewModel.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/ui/photopicker/PhotoPickerViewModel.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/ui/photopicker/di/PhotoPickerModule.kt b/app/src/main/kotlin/com/google/android/samples/socialite/ui/photopicker/di/PhotoPickerModule.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/ui/photopicker/di/PhotoPickerModule.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/ui/photopicker/di/PhotoPickerModule.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/ui/photopicker/navigation/PhotoPickerNavigation.kt b/app/src/main/kotlin/com/google/android/samples/socialite/ui/photopicker/navigation/PhotoPickerNavigation.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/ui/photopicker/navigation/PhotoPickerNavigation.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/ui/photopicker/navigation/PhotoPickerNavigation.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/ui/photopicker/navigation/PhotoPickerRoute.kt b/app/src/main/kotlin/com/google/android/samples/socialite/ui/photopicker/navigation/PhotoPickerRoute.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/ui/photopicker/navigation/PhotoPickerRoute.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/ui/photopicker/navigation/PhotoPickerRoute.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/ui/player/RemoteActions.kt b/app/src/main/kotlin/com/google/android/samples/socialite/ui/player/RemoteActions.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/ui/player/RemoteActions.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/ui/player/RemoteActions.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/ui/player/VideoPlayerScreen.kt b/app/src/main/kotlin/com/google/android/samples/socialite/ui/player/VideoPlayerScreen.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/ui/player/VideoPlayerScreen.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/ui/player/VideoPlayerScreen.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/ui/player/VideoPlayerScreenViewModel.kt b/app/src/main/kotlin/com/google/android/samples/socialite/ui/player/VideoPlayerScreenViewModel.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/ui/player/VideoPlayerScreenViewModel.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/ui/player/VideoPlayerScreenViewModel.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/ui/videoedit/VideoEditScreen.kt b/app/src/main/kotlin/com/google/android/samples/socialite/ui/videoedit/VideoEditScreen.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/ui/videoedit/VideoEditScreen.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/ui/videoedit/VideoEditScreen.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/ui/videoedit/VideoEditScreenViewModel.kt b/app/src/main/kotlin/com/google/android/samples/socialite/ui/videoedit/VideoEditScreenViewModel.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/ui/videoedit/VideoEditScreenViewModel.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/ui/videoedit/VideoEditScreenViewModel.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/widget/SociaLiteAppWidget.kt b/app/src/main/kotlin/com/google/android/samples/socialite/widget/SociaLiteAppWidget.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/widget/SociaLiteAppWidget.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/widget/SociaLiteAppWidget.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/widget/SociaLiteAppWidgetConfigActivity.kt b/app/src/main/kotlin/com/google/android/samples/socialite/widget/SociaLiteAppWidgetConfigActivity.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/widget/SociaLiteAppWidgetConfigActivity.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/widget/SociaLiteAppWidgetConfigActivity.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/widget/SociaLiteAppWidgetReceiver.kt b/app/src/main/kotlin/com/google/android/samples/socialite/widget/SociaLiteAppWidgetReceiver.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/widget/SociaLiteAppWidgetReceiver.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/widget/SociaLiteAppWidgetReceiver.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/widget/model/WidgetModel.kt b/app/src/main/kotlin/com/google/android/samples/socialite/widget/model/WidgetModel.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/widget/model/WidgetModel.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/widget/model/WidgetModel.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/widget/model/WidgetModelDao.kt b/app/src/main/kotlin/com/google/android/samples/socialite/widget/model/WidgetModelDao.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/widget/model/WidgetModelDao.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/widget/model/WidgetModelDao.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/widget/model/WidgetModelRepository.kt b/app/src/main/kotlin/com/google/android/samples/socialite/widget/model/WidgetModelRepository.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/widget/model/WidgetModelRepository.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/widget/model/WidgetModelRepository.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/widget/ui/FavoriteContact.kt b/app/src/main/kotlin/com/google/android/samples/socialite/widget/ui/FavoriteContact.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/widget/ui/FavoriteContact.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/widget/ui/FavoriteContact.kt diff --git a/app/src/main/java/com/google/android/samples/socialite/widget/ui/ZeroState.kt b/app/src/main/kotlin/com/google/android/samples/socialite/widget/ui/ZeroState.kt similarity index 100% rename from app/src/main/java/com/google/android/samples/socialite/widget/ui/ZeroState.kt rename to app/src/main/kotlin/com/google/android/samples/socialite/widget/ui/ZeroState.kt diff --git a/app/src/test/java/com/google/android/samples/socialite/ExampleUnitTest.kt b/app/src/test/kotlin/com/google/android/samples/socialite/ExampleUnitTest.kt similarity index 100% rename from app/src/test/java/com/google/android/samples/socialite/ExampleUnitTest.kt rename to app/src/test/kotlin/com/google/android/samples/socialite/ExampleUnitTest.kt diff --git a/baselineprofile/src/main/java/com/google/android/samples/socialite/baselineprofile/BaselineProfileGenerator.kt b/baselineprofile/src/main/kotlin/com/google/android/samples/socialite/baselineprofile/BaselineProfileGenerator.kt similarity index 100% rename from baselineprofile/src/main/java/com/google/android/samples/socialite/baselineprofile/BaselineProfileGenerator.kt rename to baselineprofile/src/main/kotlin/com/google/android/samples/socialite/baselineprofile/BaselineProfileGenerator.kt diff --git a/baselineprofile/src/main/java/com/google/android/samples/socialite/baselineprofile/StartupBenchmarks.kt b/baselineprofile/src/main/kotlin/com/google/android/samples/socialite/baselineprofile/StartupBenchmarks.kt similarity index 100% rename from baselineprofile/src/main/java/com/google/android/samples/socialite/baselineprofile/StartupBenchmarks.kt rename to baselineprofile/src/main/kotlin/com/google/android/samples/socialite/baselineprofile/StartupBenchmarks.kt