Classes: R

RRect

RadioButton

RadioButtonListItem

RadioGroupBindingAdapter

Radius

Range

Rating

Rating2

RatingBarBindingAdapter

RatingCompat

RawDocumentFile

RawDragGestureDetector

RawQuery

RawRes

RawScaleGestureDetector

ReceivedKeyedAppState

RecommendationExtender

Recompose

Recomposer

RecordingInputConnection

Recreator

Rect

RectEvaluator

RectHelper

RectangleShape

RecursiveTraversal

RecyclerView

RecyclerViewAccessibilityDelegate

RecyclerViewActions

RecyclerViewFlingWatcher

RecyclerViewParallax

ReferenceCountedImageProxy

ReflectionUtil

ReflectiveGenericLifecycleObserver

Region

RegisteredMediaRouteProvider

RegisteredMediaRouteProviderWatcher

Relation

RelativizableFile

RemoteActionCompat

RemoteCallable

RemoteCallback

RemoteCallbackProcessor

RemoteControlClientCompat

RemoteDescriptor

RemoteDescriptorRegistry

RemoteEspressoException

RemoteInput

RemoteInputView

RemoteInteraction

RemoteInteractionRegistry

RemoteMessageDeserializer

RemoteMessageSerializer

RemotePlaybackClient

RemoteProtocolException

RemoteResult

RemoteSessionPlayer

RenderComparison

RenderIntent

RenderersFactory

RepaintBoundary

RepeatActionUntilViewState

ReplaceTextAction

ReportFragment

RequestPermissionCallable

RequiresApi

RequiresDevice

RequiresFeature

RequiresPermission

RescheduleReceiver

ResetManager

Resettable

ResettingStubber

ResettingStubberImpl

ResizingTextView

ResolvableFuture

ResolvedIntent

ResolvedIntentImpl

ResourceBundle

ResourceCursorAdapter

ResourceExpr

ResourceManager

ResourceManagerInternal

Resources

ResourcesCompat

ResourcesFlusher

ResourcesUtil

ResourcesWrapper

RestrictTo

ResultReceiver

ResultWriter

Rgb

RichText

RichTextElement

Ripple

RippleEffect

RippleEffectFactory

RippleTheme

RoleManagerCompat

Room

RoomDatabase

RoomMasterTable

RoomOpenHelper

RoomSQLiteQuery

RoomTrackingLiveData

RoomWarnings

Root

RootMatchers

RootViewPicker

RootViewPickerScope

RootsOracle

RoundRectDrawable

RoundRectDrawableWithShadow

RoundedBitmapDrawable

RoundedBitmapDrawable21

RoundedBitmapDrawableFactory

RoundedCornerShape

RoundedDrawable

RoundedRectHelper

RoundedRectHelperApi21

RouteMediaPlayer

RouteMediaPlayerConnector

RoutePlayer

RoutePlayer2

Row

RowContainerView

RowContent

RowHeaderPresenter

RowHeaderView

RowPresenter

RowStyle

RowView

RowsFragment

RowsSupportFragment

RtlSpacingHelper

RunAfters

RunBefores

RunnerArgs

RxPagedList

RxPagedListBuilder

RxRoom

RxWorker