interface EditorSession : AutoCloseable

Known direct subclasses
ListenableEditorSession

ListenableFuture-based compatibility wrapper around EditorSession's suspending methods.


Interface for manipulating watch face state during a watch face editing session. The editor should adjust userStyle and call openComplicationDataSourceChooser to configure the watch face and call close when done. This reports the updated EditorState to the EditorListeners registered via EditorServiceClient.addListener.

For EditorSessions backed by a headless instance (see createHeadlessEditorSession and EditorRequest.headlessDeviceConfig), style changes are not applied to the interactive instance and it's up to the system to apply them. For EditorSessions backed by an interactive instance style changes are applied immediately. Its possible the system might fail to persist the style changes (e.g. to data base write failure or a crash) and if this happens it's the responsibility of the system to revert the style change.

Summary

Public companion functions

EditorSession
@RequiresApi(value = 27)
@UiThread
createHeadlessEditorSession(
    activity: ComponentActivity,
    editIntent: Intent,
    headlessWatchFaceClient: HeadlessWatchFaceClient
)

Constructs an EditorSession for a remote watch face editor.

suspend EditorSession

Constructs an EditorSession for an on watch face editor.

Public companion properties

Instant

If passed renderWatchFaceToBitmap this will signal that the watch face's default preview time should be used.

Duration

Timeout allowed for waiting for creating the watch face editing session.

Public functions

Int?

Returns the ID of the complication at the given coordinates or null if there isn't one.

suspend ChosenComplicationDataSource?

Opens the complication data source chooser and returns the chosen complication data source for the specified androidx.wear.watchface.ComplicationSlot.

Bitmap
@UiThread
renderWatchFaceToBitmap(
    renderParameters: RenderParameters,
    instant: Instant,
    slotIdToComplicationData: Map<IntComplicationData>?
)

Renders the watch face to a Bitmap using the current userStyle.

Public properties

Int?

The ID of the background complication or null if there isn't one.

Boolean

Whether any changes should be committed when the session is closed (defaults to true).

StateFlow<Map<IntComplicationSlotState>>

A Flow of a Map of complication slot ids to ComplicationSlotState for each complication slot.

StateFlow<Map<IntComplicationDataSourceInfo?>>

Returns a flow of maps of androidx.wear.watchface.ComplicationSlot ids to ComplicationDataSourceInfo that represent the information available about the data source for each complication.

StateFlow<Map<IntComplicationData>>

Returns a flow of maps of androidx.wear.watchface.ComplicationSlot ids to preview ComplicationData suitable for use in rendering a preview of the watch face.

Instant

The reference preview Instant for this watch face to render previews with.

MutableStateFlow<UserStyle>

The current UserStyle.

UserStyleSchema

The watch face's UserStyleSchema.

ComponentName

The ComponentName of the watch face being edited.

WatchFaceId

Unique ID for the instance of the watch face being edited.

Inherited functions

From java.lang.AutoCloseable

Public companion functions

createHeadlessEditorSession

Added in 1.0.0
@RequiresApi(value = 27)
@UiThread
fun createHeadlessEditorSession(
    activity: ComponentActivity,
    editIntent: Intent,
    headlessWatchFaceClient: HeadlessWatchFaceClient
): EditorSession

Constructs an EditorSession for a remote watch face editor.

Caution the remote watchface must have been built with the same version of the watch face libraries.

Parameters
activity: ComponentActivity

The ComponentActivity associated with the EditorSession.

editIntent: Intent

The Intent sent by SysUI to launch the editing session.

headlessWatchFaceClient: HeadlessWatchFaceClient

The HeadlessWatchFaceClient to use for rendering etc...

Returns
EditorSession

The EditorSession or null if it could not be constructed.

createOnWatchEditorSession

@UiThread
suspend fun createOnWatchEditorSession(activity: ComponentActivity): EditorSession

Constructs an EditorSession for an on watch face editor. This registers an activity result handler and so it must be called during an Activity or Fragment initialization path. The EditorSession is lifecycle aware and will automatically close when onDestroy is received.

Parameters
activity: ComponentActivity

The ComponentActivity associated with the EditorSession.

Returns
EditorSession

Deferred which is resolved with either the EditorSession or null if it can't be constructed.

Throws
kotlinx.coroutines.TimeoutCancellationException

if it takes longer than EDITING_SESSION_TIMEOUT to create a watch face editor.

Public companion properties

DEFAULT_PREVIEW_INSTANT

val DEFAULT_PREVIEW_INSTANTInstant

If passed renderWatchFaceToBitmap this will signal that the watch face's default preview time should be used.

EDITING_SESSION_TIMEOUT

val EDITING_SESSION_TIMEOUTDuration

Timeout allowed for waiting for creating the watch face editing session.

Public functions

getComplicationSlotIdAt

Added in 1.0.0
@UiThread
fun getComplicationSlotIdAt(x: @Px Int, y: @Px Int): Int?

Returns the ID of the complication at the given coordinates or null if there isn't one. Only androidx.wear.watchface.ComplicationSlots with ComplicationSlotBoundsType.ROUND_RECT are supported by this function.

openComplicationDataSourceChooser

@UiThread
suspend fun openComplicationDataSourceChooser(complicationSlotId: Int): ChosenComplicationDataSource?

Opens the complication data source chooser and returns the chosen complication data source for the specified androidx.wear.watchface.ComplicationSlot.

The result returns null if the operation was cancelled and otherwise returned an instance of ChosenComplicationDataSource that contains information about the chosen data source.

Parameters
complicationSlotId: Int

The id of the androidx.wear.watchface.ComplicationSlot to select a complication data source for.

Throws
kotlin.IllegalStateException

if a previous invocation of openComplicationDataSourceChooser is still running when openComplicationDataSourceChooser is called.

renderWatchFaceToBitmap

@UiThread
fun renderWatchFaceToBitmap(
    renderParameters: RenderParameters,
    instant: Instant,
    slotIdToComplicationData: Map<IntComplicationData>?
): Bitmap

Renders the watch face to a Bitmap using the current userStyle.

Parameters
renderParameters: RenderParameters

The RenderParameters to render with. Must be DrawMode.INTERACTIVE

instant: Instant

The Instant to render with

slotIdToComplicationData: Map<IntComplicationData>?

The ComplicationData for each androidx.wear.watchface.ComplicationSlot to render with

Returns
Bitmap

A Bitmap containing the screen shot with the specified parameters

Public properties

backgroundComplicationSlotId

Added in 1.0.0
val backgroundComplicationSlotIdInt?

The ID of the background complication or null if there isn't one.

commitChangesOnClose

Added in 1.0.0
var commitChangesOnCloseBoolean

Whether any changes should be committed when the session is closed (defaults to true).

Note due to SysUI requirements EditorState can't reliably be sent in the activity result because there are circumstances where ComponentActivity.onStop doesn't get called but the UX requires us to commit changes.

Regardless of the value, on completion of the editor session, the original UserStyle is restored. Note we need SysUI's help to revert any complication data source changes. Caveat some complication data sources have their own config (e.g. the world clock has a timezone setting) and that config currently can't be reverted.

complicationSlotsState

Added in 1.0.0
val complicationSlotsStateStateFlow<Map<IntComplicationSlotState>>

A Flow of a Map of complication slot ids to ComplicationSlotState for each complication slot.

If accessed from java, consider using androidx.lifecycle.FlowLiveDataConversions.asLiveData to observe changes.

complicationsDataSourceInfo

Added in 1.0.0
val complicationsDataSourceInfoStateFlow<Map<IntComplicationDataSourceInfo?>>

Returns a flow of maps of androidx.wear.watchface.ComplicationSlot ids to ComplicationDataSourceInfo that represent the information available about the data source for each complication. This data is fetched asynchronously and the map will initially be empty. For watch faces without complications this will always be empty.

Note new data may be pushed as result of running openComplicationDataSourceChooser.

Note a null ComplicationDataSourceInfo will be associated with a complication slot id if the androidx.wear.watchface.ComplicationSlot is configured to show the empty complication data source.

complicationsPreviewData

Added in 1.0.0
val complicationsPreviewDataStateFlow<Map<IntComplicationData>>

Returns a flow of maps of androidx.wear.watchface.ComplicationSlot ids to preview ComplicationData suitable for use in rendering a preview of the watch face. This data is fetched asynchronously and the map will initially be empty. For watch faces without complications this will always be empty.

Note new data may be pushed as a result of running openComplicationDataSourceChooser.

Note if a slot is configured to be empty then the map will contain an instance of EmptyComplicationData for that slot. Disabled complicationSlots are included in the map.

If accessed from java, consider using androidx.lifecycle.FlowLiveDataConversions.asLiveData to observe changes.

previewReferenceInstant

Added in 1.0.0
val previewReferenceInstantInstant

The reference preview Instant for this watch face to render previews with.

userStyle

Added in 1.0.0
val userStyleMutableStateFlow<UserStyle>

The current UserStyle. Assigning to this will cause the style to update. However, styling changes to the watch face will be reverted upon exit.

If accessed from java, consider using androidx.lifecycle.FlowLiveDataConversions.asLiveData to observe changes.

userStyleSchema

Added in 1.0.0
val userStyleSchemaUserStyleSchema

The watch face's UserStyleSchema.

watchFaceComponentName

Added in 1.0.0
val watchFaceComponentNameComponentName

The ComponentName of the watch face being edited.

watchFaceId

Added in 1.0.0
val watchFaceIdWatchFaceId

Unique ID for the instance of the watch face being edited. Note each distinct ComponentName can sometimes have multiple instances. See WatchFaceId for more details.