Interface (CameraManager)

CameraManager implements camera management. Before calling any API in CameraManager, you must use getCameraManager to obtain a CameraManager instance.

NOTE

The initial APIs of this module are supported since API version 10. Newly added APIs will be marked with a superscript to indicate their earliest API version.

Modules to Import

import { camera } from '@kit.CameraKit';

getSupportedCameras

getSupportedCameras(): Array<CameraDevice>

Obtains the supported camera devices. This API returns the result synchronously.

Atomic service API: This API can be used in atomic services since API version 19.

System capability: SystemCapability.Multimedia.Camera.Core

Return value

Type	Description
Array<CameraDevice>	Array of camera devices supported.

Example

import { BusinessError } from '@kit.BasicServicesKit';

function getSupportedCameras(cameraManager: camera.CameraManager): Array<camera.CameraDevice> {
  let cameras: Array<camera.CameraDevice> = [];
  try {
    cameras = cameraManager.getSupportedCameras();
  } catch (error) {
    let err = error as BusinessError;
    console.error(`The getSupportedCameras call failed. error code: ${err.code}`);
  }
  return cameras;
}

getSupportedSceneModes¹¹⁺

getSupportedSceneModes(camera: CameraDevice): Array<SceneMode>

Obtains the scene modes supported by a camera device. This API returns the result synchronously.

Atomic service API: This API can be used in atomic services since API version 19.

System capability: SystemCapability.Multimedia.Camera.Core

Parameters

Name	Type	Mandatory	Description
camera	CameraDevice	Yes	CameraDevice instance, which is obtained through getSupportedCameras. Error code 7400101 is returned if the input parameter is invalid.

Return value

Type	Description
Array<SceneMode>	Array of scene modes supported.

Example

import { BusinessError } from '@kit.BasicServicesKit';

function getSupportedSceneModes(cameraManager: camera.CameraManager, camera: camera.CameraDevice): Array<camera.SceneMode> {
  let modes: Array<camera.SceneMode> = [];
  try {
    modes = cameraManager.getSupportedSceneModes(camera);
  } catch (error) {
    let err = error as BusinessError;
    console.error(`The getSupportedSceneModes call failed. error code: ${err.code}`);
  }
  return modes;
}

getSupportedOutputCapability¹¹⁺

getSupportedOutputCapability(camera: CameraDevice, mode: SceneMode): CameraOutputCapability

Obtains the output capability supported by a camera device in a given scene mode. This API returns the result synchronously.

Atomic service API: This API can be used in atomic services since API version 19.

System capability: SystemCapability.Multimedia.Camera.Core

Parameters

Name	Type	Mandatory	Description
camera	CameraDevice	Yes	CameraDevice instance, which is obtained through getSupportedCameras.
mode	SceneMode	Yes	Scene mode, which is obtained through getSupportedSceneModes.

Return value

Type	Description
CameraOutputCapability	Camera output capability obtained.

Example

function getSupportedOutputCapability(camera: camera.CameraDevice, cameraManager: camera.CameraManager, sceneMode: camera.SceneMode): camera.CameraOutputCapability {
  let cameraOutputCapability: camera.CameraOutputCapability = cameraManager.getSupportedOutputCapability(camera, sceneMode);
  return cameraOutputCapability;
}

getSupportedFullOutputCapability²³⁺

getSupportedFullOutputCapability(camera: CameraDevice, mode: SceneMode): CameraOutputCapability

Obtains the complete output capabilities supported by a specified camera in a specified mode, including YUV, HEIF, and HDR.

NOTE

Before using YUV, HEIF, or HDR, you need to explicitly call this method to ensure that the complete output capabilities are obtained.

Model restriction: This API can be used only in the stage model.

Atomic service API: This API can be used in atomic services since API version 23.

System capability: SystemCapability.Multimedia.Camera.Core

Parameters

Name	Type	Mandatory	Description
camera	CameraDevice	Yes	CameraDevice instance, which is obtained through getSupportedCameras.
mode	SceneMode	Yes	Scene mode, which is obtained through getSupportedSceneModes.

Return value

Type	Description
CameraOutputCapability	Camera output capability obtained.

Example

import { camera } from '@kit.CameraKit';

function getSupportedFullOutputCapability(camera: camera.CameraDevice, cameraManager: camera.CameraManager, sceneMode: camera.SceneMode): camera.CameraOutputCapability {
  let cameraOutputCapability: camera.CameraOutputCapability = cameraManager.getSupportedFullOutputCapability(camera, sceneMode);
  return cameraOutputCapability;
}

isCameraMuted

isCameraMuted(): boolean

Checks whether this camera is muted.

Atomic service API: This API can be used in atomic services since API version 19.

System capability: SystemCapability.Multimedia.Camera.Core

Return value

Type	Description
boolean	Check result for whether the camera is muted. true if muted, false otherwise.

Example

function isCameraMuted(cameraManager: camera.CameraManager): boolean {
  let isMuted: boolean = cameraManager.isCameraMuted();
  return isMuted;
}

createCameraInput

createCameraInput(camera: CameraDevice): CameraInput

Creates a CameraInput instance with the specified CameraDevice instance. This API returns the result synchronously.

Before calling this API, call getSupportedCameras to obtain the list of supported camera devices, select the camera device that meets the requirements based on the actual usage scenario, and then create the CameraInput instance.

Required permissions: ohos.permission.CAMERA

Atomic service API: This API can be used in atomic services since API version 19.

System capability: SystemCapability.Multimedia.Camera.Core

Parameters

Name	Type	Mandatory	Description
camera	CameraDevice	Yes	CameraDevice instance, which is obtained through getSupportedCameras.

Return value

Type	Description
CameraInput	CameraInput instance created. If the operation fails, an error code defined in CameraErrorCode is returned.

Error codes

For details about the error codes, see Camera Error Codes.

ID	Error Message
7400101	Parameter missing or parameter type incorrect.
7400102	Operation not allowed.
7400201	Camera service fatal error.

Example

import { BusinessError } from '@kit.BasicServicesKit';

function createCameraInput(camera: camera.CameraDevice, cameraManager: camera.CameraManager): camera.CameraInput|undefined {
  let cameraInput: camera.CameraInput|undefined = undefined;
  try {
    cameraInput = cameraManager.createCameraInput(camera);
  } catch (error) {
    // If the operation fails, error.code is returned and processed.
    let err = error as BusinessError;
    console.error(`The createCameraInput call failed. error code: ${err.code}`);
  }
  return cameraInput;
}

createCameraInput

createCameraInput(position: CameraPosition, type: CameraType): CameraInput

Creates a CameraInput instance with the specified camera position and type. This API returns the result synchronously.

Before calling this API, specify the camera position and type based on the usage scenario. For example, open the front camera for the selfie feature

Required permissions: ohos.permission.CAMERA

Atomic service API: This API can be used in atomic services since API version 19.

System capability: SystemCapability.Multimedia.Camera.Core

Parameters

Name	Type	Mandatory	Description
position	CameraPosition	Yes	Camera position. You need to obtain the supported camera object by calling getSupportedCameras and then obtain the device position information based on the returned camera object.
type	CameraType	Yes	Camera type. You need to obtain the supported camera object by calling getSupportedCameras and then obtain the camera type based on the returned camera object.

Return value

Type	Description
CameraInput	CameraInput instance created. If the operation fails, an error code defined in CameraErrorCode is returned.

Error codes

For details about the error codes, see Camera Error Codes.

ID	Error Message
7400101	Parameter missing or parameter type incorrect.
7400102	Operation not allowed.
7400201	Camera service fatal error.

Example

import { BusinessError } from '@kit.BasicServicesKit';

function createCameraInput(camera: camera.CameraDevice, cameraManager: camera.CameraManager): camera.CameraInput|undefined {
  let position: camera.CameraPosition = camera.cameraPosition;
  let type: camera.CameraType = camera.cameraType;
  let cameraInput: camera.CameraInput|undefined = undefined;
  try {
    cameraInput = cameraManager.createCameraInput(position, type);
  } catch (error) {
    // If the operation fails, error.code is returned and processed.
    let err = error as BusinessError;
    console.error(`The createCameraInput call failed. error code: ${err.code}`);
  }
  return cameraInput;
}

createPreviewOutput

createPreviewOutput(profile: Profile, surfaceId: string): PreviewOutput

Creates a PreviewOutput instance. This API returns the result synchronously.

Atomic service API: This API can be used in atomic services since API version 19.

System capability: SystemCapability.Multimedia.Camera.Core

Parameters

Name	Type	Mandatory	Description
profile	Profile	Yes	Supported preview profile, which is obtained through getSupportedOutputCapability.
surfaceId	string	Yes	Surface ID, which is obtained from XComponent or ImageReceiver.

Return value

Type	Description
PreviewOutput	PreviewOutput instance created. If the operation fails, an error code defined in CameraErrorCode is returned.

Error codes

For details about the error codes, see Camera Error Codes.

ID	Error Message
7400101	Parameter missing or parameter type incorrect.
7400201	Camera service fatal error.

Example

import { BusinessError } from '@kit.BasicServicesKit';

function createPreviewOutput(cameraOutputCapability: camera.CameraOutputCapability, cameraManager: camera.CameraManager, surfaceId: string): camera.PreviewOutput|undefined {
  let profile: camera.Profile = cameraOutputCapability.previewProfiles[0];
  let previewOutput: camera.PreviewOutput|undefined = undefined;
  try {
    previewOutput = cameraManager.createPreviewOutput(profile, surfaceId);
  } catch (error) {
    // If the operation fails, error.code is returned and processed.
    let err = error as BusinessError;
    console.error(`The createPreviewOutput call failed. error code: ${err.code}`);
  }
  return previewOutput;
}

createPreviewOutput¹²⁺

createPreviewOutput(surfaceId: string): PreviewOutput

Creates a PreviewOutput instance without configuration. This API returns the result synchronously. It must be used with preconfig.

Atomic service API: This API can be used in atomic services since API version 19.

System capability: SystemCapability.Multimedia.Camera.Core

Parameters

Name	Type	Mandatory	Description
surfaceId	string	Yes	Surface ID, which is obtained from XComponent or ImageReceiver.

Return value

Type	Description
PreviewOutput	PreviewOutput instance created. If the operation fails, an error code defined in CameraErrorCode is returned.

Error codes

For details about the error codes, see Camera Error Codes.

ID	Error Message
7400101	Parameter missing or parameter type incorrect.
7400201	Camera service fatal error.

Example

import { BusinessError } from '@kit.BasicServicesKit';

function createPreviewOutput(cameraManager: camera.CameraManager, surfaceId: string): camera.PreviewOutput|undefined {
  let previewOutput: camera.PreviewOutput|undefined = undefined;
  try {
    previewOutput = cameraManager.createPreviewOutput(surfaceId);
  } catch (error) {
    // If the operation fails, error.code is returned and processed.
    let err = error as BusinessError;
    console.error(`The createPreviewOutput call failed. error code: ${err.code}`);
  }
  return previewOutput;
}

createDeferredPreviewOutput²⁴⁺

createDeferredPreviewOutput(profile: Profile): PreviewOutput

Creates a deferred PreviewOutput instance and adds it, instead of a common PreviewOutput instance, to the data stream during stream configuration.

Atomic service API: This API can be used in atomic services since API version 24.

System capability: SystemCapability.Multimedia.Camera.Core

Parameters

Name	Type	Mandatory	Description
profile	Profile	Yes	Supported preview profile, which is obtained through getSupportedOutputCapability.

Return value

Type	Description
PreviewOutput	PreviewOutput instance created. If the operation fails, an error code defined in CameraErrorCode is returned.

Error codes

For details about the error codes, see Camera Error Codes.

ID	Error Message
7400101	Parameter missing or parameter type incorrect.
7400201	Camera service fatal error.

Example

import { BusinessError } from '@kit.BasicServicesKit';

function createPreviewOutput(cameraOutputCapability: camera.CameraOutputCapability, cameraManager: camera.CameraManager): camera.PreviewOutput|undefined {
  let profile: camera.Profile = cameraOutputCapability.previewProfiles[0];
  let previewOutput: camera.PreviewOutput|undefined = undefined;
  try {
    previewOutput = cameraManager.createDeferredPreviewOutput(profile);
  } catch (error) {
    // If the operation fails, error.code is returned and processed.
    let err = error as BusinessError;
    console.error(`The createPreviewOutput call failed. error code: ${err.code}`);
  }
  return previewOutput;
}

createPhotoOutput¹¹⁺

createPhotoOutput(profile?: Profile): PhotoOutput

Creates a PhotoOutput instance. This API returns the result synchronously.

Atomic service API: This API can be used in atomic services since API version 19.

System capability: SystemCapability.Multimedia.Camera.Core

Parameters

Name	Type	Mandatory	Description
profile	Profile	No	Supported photo profile, which is obtained through getSupportedOutputCapability. In API version 11, this parameter is mandatory. Starting from API version 12, it will overwrite the preconfigured parameters passed in through preconfig.

Return value

Type	Description
PhotoOutput	PhotoOutput instance created. If the operation fails, an error code defined in CameraErrorCode is returned.

Error codes

For details about the error codes, see Camera Error Codes.

ID	Error Message
7400101	Parameter missing or parameter type incorrect.
7400201	Camera service fatal error.

Example

import { BusinessError } from '@kit.BasicServicesKit';

function createPhotoOutput(cameraOutputCapability: camera.CameraOutputCapability, cameraManager: camera.CameraManager): camera.PhotoOutput|undefined {
  let profile: camera.Profile = cameraOutputCapability.photoProfiles[0];
  let photoOutput: camera.PhotoOutput|undefined = undefined;
  try {
    photoOutput = cameraManager.createPhotoOutput(profile);
  } catch (error) {
    // If the operation fails, error.code is returned and processed.
    let err = error as BusinessError;
    console.error(`The createPhotoOutput call failed. error code: ${err.code}`);
  }
  return photoOutput;
}

createVideoOutput

createVideoOutput(profile: VideoProfile, surfaceId: string): VideoOutput

Creates a VideoOutput instance. This API returns the result synchronously.

In video recording mode, if SDR or HDR VIVID is enabled, the camera format and color space must be configured according to the relationships specified in the table below. Configurations that do not match the table will cause issues such as preview exceptions.

SDR/HDR Photo Capture	CameraFormat	ColorSpace
SDR	CAMERA_FORMAT_YUV_420_SP	BT709_LIMIT
HDR_VIVID	CAMERA_FORMAT_YCRCB_P010 CAMERA_FORMAT_YCBCR_P010	BT2020_HLG_LIMIT BT2020_HLG_FULL

Atomic service API: This API can be used in atomic services since API version 19.

System capability: SystemCapability.Multimedia.Camera.Core

Parameters

Name	Type	Mandatory	Description
profile	VideoProfile	Yes	Supported video profile, which is obtained through getSupportedOutputCapability.
surfaceId	string	Yes	Surface ID, which is obtained from AVRecorder.

Return value

Type	Description
VideoOutput	VideoOutput instance created. If the operation fails, an error code defined in CameraErrorCode is returned.

Error codes

For details about the error codes, see Camera Error Codes.

ID	Error Message
7400101	Parameter missing or parameter type incorrect.
7400201	Camera service fatal error.

Example

import { BusinessError } from '@kit.BasicServicesKit';

function createVideoOutput(cameraOutputCapability: camera.CameraOutputCapability, cameraManager: camera.CameraManager, surfaceId: string): camera.VideoOutput|undefined {
  let profile: camera.VideoProfile = cameraOutputCapability.videoProfiles[0];
  let videoOutput: camera.VideoOutput|undefined = undefined;
  try {
    videoOutput = cameraManager.createVideoOutput(profile, surfaceId);
  } catch (error) {
    // If the operation fails, error.code is returned and processed.
    let err = error as BusinessError;
    console.error(`The createVideoOutput call failed. error code: ${err.code}`);
  }
  return videoOutput;
}

createVideoOutput¹²⁺

createVideoOutput(surfaceId: string): VideoOutput

Creates a VideoOutput instance without configuration. This API returns the result synchronously. It must be used with preconfig.

Atomic service API: This API can be used in atomic services since API version 19.

System capability: SystemCapability.Multimedia.Camera.Core

Parameters

Name	Type	Mandatory	Description
surfaceId	string	Yes	Surface ID, which is obtained from AVRecorder.

Return value

Type	Description
VideoOutput	VideoOutput instance created. If the operation fails, an error code defined in CameraErrorCode is returned.

Error codes

For details about the error codes, see Camera Error Codes.

ID	Error Message
7400101	Parameter missing or parameter type incorrect.
7400201	Camera service fatal error.

Example

import { BusinessError } from '@kit.BasicServicesKit';

function createVideoOutput(cameraManager: camera.CameraManager, surfaceId: string): camera.VideoOutput|undefined {
  let videoOutput: camera.VideoOutput|undefined = undefined;
  try {
    videoOutput = cameraManager.createVideoOutput(surfaceId);
  } catch (error) {
    // If the operation fails, error.code is returned and processed.
    let err = error as BusinessError;
    console.error(`The createVideoOutput call failed. error code: ${err.code}`);
  }
  return videoOutput;
}

createMetadataOutput

createMetadataOutput(metadataObjectTypes: Array<MetadataObjectType>): MetadataOutput

Creates a MetadataOutput instance. This API returns the result synchronously.

Atomic service API: This API can be used in atomic services since API version 19.

System capability: SystemCapability.Multimedia.Camera.Core

Parameters

Name	Type	Mandatory	Description
metadataObjectTypes	Array<MetadataObjectType>	Yes	Metadata object types, which are obtained through getSupportedOutputCapability.

Return value

Type	Description
MetadataOutput	MetadataOutput instance created. If the operation fails, an error code defined in CameraErrorCode is returned.

Error codes

For details about the error codes, see Camera Error Codes.

ID	Error Message
7400101	Parameter missing or parameter type incorrect.
7400201	Camera service fatal error.

Example

import { BusinessError } from '@kit.BasicServicesKit';

function createMetadataOutput(cameraManager: camera.CameraManager, cameraOutputCapability: camera.CameraOutputCapability): void {
  let metadataObjectTypes: Array<camera.MetadataObjectType> = cameraOutputCapability.supportedMetadataObjectTypes;
  let metadataOutput: camera.MetadataOutput|undefined = undefined;
  try {
    metadataOutput = cameraManager.createMetadataOutput(metadataObjectTypes);
  } catch (error) {
    // If the operation fails, error.code is returned and processed.
    let err = error as BusinessError;
    console.error(`createMetadataOutput error. error code: ${err.code}`);
  }
}

createSession¹¹⁺

createSession<T extends Session>(mode: SceneMode): T

Creates a Session instance with a given scene mode. This API returns the result synchronously.

Atomic service API: This API can be used in atomic services since API version 19.

System capability: SystemCapability.Multimedia.Camera.Core

Parameters

Name	Type	Mandatory	Description
mode	SceneMode	Yes	Scene mode. The API does not take effect if the input parameter is invalid (for example, the value is out of range, null, or undefined).

Return value

Type	Description
T	Session instance created. If the operation fails, an error code defined in CameraErrorCode is returned.

Error codes

For details about the error codes, see Camera Error Codes.

ID	Error Message
7400101	Parameter error. Possible causes: 1. Mandatory parameters are left unspecified; 2. Incorrect parameter types; 3.Parameter verification failed.
7400201	Camera service fatal error.

Example

import { BusinessError } from '@kit.BasicServicesKit';

function createSession(cameraManager: camera.CameraManager, mode: camera.SceneMode): camera.Session|undefined {
  let photoSession: camera.PhotoSession|undefined = undefined;
  try {
    photoSession = cameraManager.createSession(mode) as camera.PhotoSession;
  } catch (error) {
    // If the operation fails, error.code is returned and processed.
    let err = error as BusinessError;
    console.error(`createCaptureSession error. error code: ${err.code}`);
  }
  return photoSession;
}

on('cameraStatus')

on(type: 'cameraStatus', callback: AsyncCallback<CameraStatusInfo>): void

Subscribes to camera status events. This API uses an asynchronous callback to return the result.

NOTE

Currently, you cannot use off() to unregister the callback in the callback method of on().

Atomic service API: This API can be used in atomic services since API version 19.

System capability: SystemCapability.Multimedia.Camera.Core

Parameters

Name	Type	Mandatory	Description
type	string	Yes	Event type. The value is fixed at 'cameraStatus'. The event can be listened for when a CameraManager instance is obtained. This event is triggered and the corresponding information is returned only when the camera device is enabled or disabled.
callback	AsyncCallback<CameraStatusInfo>	Yes	Callback used to return the camera status change.

Example

import { BusinessError } from '@kit.BasicServicesKit';

function callback(err: BusinessError, cameraStatusInfo: camera.CameraStatusInfo): void {
  if (err !== undefined && err.code !== 0) {
    console.error('cameraStatus with errorCode = ' + err.code);
    return;
  }
  console.info(`camera : ${cameraStatusInfo.camera.cameraId}`);
  console.info(`status: ${cameraStatusInfo.status}`);
}

function registerCameraStatus(cameraManager: camera.CameraManager): void {
  cameraManager.on('cameraStatus', callback);
}

off('cameraStatus')

off(type: 'cameraStatus', callback?: AsyncCallback<CameraStatusInfo>): void

Unsubscribes from camera status events. This API uses an asynchronous callback to return the result.

Atomic service API: This API can be used in atomic services since API version 19.

System capability: SystemCapability.Multimedia.Camera.Core

Parameters

Name	Type	Mandatory	Description
type	string	Yes	Event type. The value is fixed at 'cameraStatus'. The event can be listened for when a CameraManager instance is obtained.
callback	AsyncCallback<CameraStatusInfo>	No	Callback used to return the result. If this parameter is specified, the subscription to the specified event with the specified callback is canceled. (The callback object cannot be an anonymous function.) Otherwise, the subscriptions to the specified event with all the callbacks are canceled.

Example

function unregisterCameraStatus(cameraManager: camera.CameraManager): void {
  cameraManager.off('cameraStatus');
}

on('foldStatusChange')¹²⁺

on(type: 'foldStatusChange', callback: AsyncCallback<FoldStatusInfo>): void

Subscribes to fold status change events of the foldable device. This API uses an asynchronous callback to return the result.

NOTE

Currently, you cannot use off() to unregister the callback in the callback method of on().

Atomic service API: This API can be used in atomic services since API version 19.

System capability: SystemCapability.Multimedia.Camera.Core

Parameters

Name	Type	Mandatory	Description
type	string	Yes	Event type. The value is fixed at 'foldStatusChange'. The event is triggered when the fold state of the foldable device changes.
callback	AsyncCallback<FoldStatusInfo>	Yes	Callback used to return the fold state information about the foldable device.

Example

import { BusinessError } from '@kit.BasicServicesKit';

function callback(err: BusinessError, foldStatusInfo: camera.FoldStatusInfo): void {
  if (err !== undefined && err.code !== 0) {
    console.error('foldStatusChange with errorCode = ' + err.code);
    return;
  }
  console.info(`camera length: ${foldStatusInfo.supportedCameras.length}`);
  console.info(`foldStatus: ${foldStatusInfo.foldStatus}`);
}

function registerFoldStatusChange(cameraManager: camera.CameraManager): void {
  cameraManager.on('foldStatusChange', callback);
}

off('foldStatusChange')¹²⁺

off(type: 'foldStatusChange', callback?: AsyncCallback<FoldStatusInfo>): void

Unsubscribes from fold state change events of the foldable device.

Atomic service API: This API can be used in atomic services since API version 19.

System capability: SystemCapability.Multimedia.Camera.Core

Parameters

Name	Type	Mandatory	Description
type	string	Yes	Event type. The value is fixed at 'foldStatusChange'. The event is triggered when the fold state of the foldable device changes.
callback	AsyncCallback<FoldStatusInfo>	No	Callback used to return the fold state information about the foldable device. If this parameter is specified, the subscription to the specified event with the specified callback is canceled. (The callback object cannot be an anonymous function.) Otherwise, the subscriptions to the specified event with all the callbacks are canceled.

Example

function unregisterFoldStatusChange(cameraManager: camera.CameraManager): void {
  cameraManager.off('foldStatusChange');
}

isTorchSupported¹¹⁺

isTorchSupported(): boolean

Checks whether the camera device supports the flashlight.

Atomic service API: This API can be used in atomic services since API version 19.

System capability: SystemCapability.Multimedia.Camera.Core

Return value

Type	Description
boolean	Whether the device supports the flashlight. true if supported, false otherwise. If false is returned, isTorchModeSupported, getTorchMode, setTorchMode, isTorchLevelControlSupported, and setTorchModeOnWithLevel do not take effect. If the API call fails, undefined is returned.

Example

function isTorchSupported(cameraManager: camera.CameraManager): boolean {
  let isSupported = cameraManager.isTorchSupported();
  return isSupported;
}

isTorchModeSupported¹¹⁺

isTorchModeSupported(mode: TorchMode): boolean

Checks whether a flashlight mode is supported.

Atomic service API: This API can be used in atomic services since API version 19.

System capability: SystemCapability.Multimedia.Camera.Core

Parameters

Name	Type	Mandatory	Description
mode	TorchMode	Yes	Flashlight mode. If the input parameter is null or undefined, it is treated as 0 and the flashlight is turned off.

Return value

Type	Description
boolean	Check result for the support of the flashlight mode. true if supported, false otherwise. If the API call fails, undefined is returned.

Example

function isTorchModeSupported(cameraManager: camera.CameraManager, torchMode: camera.TorchMode): boolean {
  let isSupported = cameraManager.isTorchModeSupported(torchMode);
  return isSupported;
}

getTorchMode¹¹⁺

getTorchMode(): TorchMode

Obtains the flashlight mode of this camera device.

Atomic service API: This API can be used in atomic services since API version 19.

System capability: SystemCapability.Multimedia.Camera.Core

Return value

Type	Description
TorchMode	Flashlight mode.

Example

function getTorchMode(cameraManager: camera.CameraManager): camera.TorchMode|undefined {
  let torchMode: camera.TorchMode|undefined = undefined;
  torchMode = cameraManager.getTorchMode();
  return torchMode;
}

setTorchMode¹¹⁺

setTorchMode(mode: TorchMode): void

Sets the flashlight mode.

Atomic service API: This API can be used in atomic services since API version 19.

System capability: SystemCapability.Multimedia.Camera.Core

Parameters

Name	Type	Mandatory	Description
mode	TorchMode	Yes	Flashlight mode. If the input parameter is null or undefined, it is treated as 0 and the flashlight is turned off.

Error codes

For details about the error codes, see Camera Error Codes.

ID	Error Message
7400102	Operation not allowed.
7400201	Camera service fatal error.

Example

import { BusinessError } from '@kit.BasicServicesKit';

function setTorchMode(cameraManager: camera.CameraManager, torchMode: camera.TorchMode): void {
  try {
    cameraManager.setTorchMode(torchMode);
  } catch (error) {
    // If the operation fails, error.code is returned and processed.
    let err = error as BusinessError;
    console.error(`The setTorchMode call failed. error code: ${err.code}`);
  }
}

on('torchStatusChange')¹¹⁺

on(type: 'torchStatusChange', callback: AsyncCallback<TorchStatusInfo>): void

Subscribes to flashlight status change events. This API uses an asynchronous callback to return the result.

NOTE

Currently, you cannot use off() to unregister the callback in the callback method of on().

Atomic service API: This API can be used in atomic services since API version 19.

System capability: SystemCapability.Multimedia.Camera.Core

Parameters

Name	Type	Mandatory	Description
type	string	Yes	Event type. The value is fixed at 'torchStatusChange'. The event can be listened for when a CameraManager instance is obtained. Currently, this event is triggered only in the following scenarios: The flashlight is turned on or turned off, or becomes unavailable or available.
callback	AsyncCallback<TorchStatusInfo>	Yes	Callback used to return the flashlight status.

Example

import { BusinessError } from '@kit.BasicServicesKit';

function callback(err: BusinessError, torchStatusInfo: camera.TorchStatusInfo): void {
  if (err !== undefined && err.code !== 0) {
    console.error(`Callback Error, errorCode: ${err.code}`);
    return;
  }
  console.info(`onTorchStatusChange, isTorchAvailable: ${torchStatusInfo.isTorchAvailable}, isTorchActive: ${torchStatusInfo.isTorchActive}, level: ${torchStatusInfo.torchLevel}`);
}

function registerTorchStatusChange(cameraManager: camera.CameraManager): void {
  cameraManager.on('torchStatusChange', callback);
}

off('torchStatusChange')¹¹⁺

off(type: 'torchStatusChange', callback?: AsyncCallback<TorchStatusInfo>): void

Unsubscribes from flashlight status change events. This API uses an asynchronous callback to return the result.

Atomic service API: This API can be used in atomic services since API version 19.

System capability: SystemCapability.Multimedia.Camera.Core

Parameters

Name	Type	Mandatory	Description
type	string	Yes	Event type. The value is fixed at 'torchStatusChange'. The event can be listened for when a CameraManager instance is obtained.
callback	AsyncCallback<TorchStatusInfo>	No	Callback used to return the result. If this parameter is specified, the subscription to the specified event with the specified callback is canceled. (The callback object cannot be an anonymous function.) Otherwise, the subscriptions to the specified event with all the callbacks are canceled.

Example

function unregisterTorchStatusChange(cameraManager: camera.CameraManager): void {
  cameraManager.off('torchStatusChange');
}

isTorchLevelControlSupported

isTorchLevelControlSupported(): boolean

Checks whether the device supports flashlight brightness control.

Since: 26.0.0

Model restriction: This API can be used only in the stage model.

Atomic service API: This API can be used in atomic services since API version 26.

System capability: SystemCapability.Multimedia.Camera.Core

Return value

Type	Description
boolean	Whether the device supports flashlight brightness control. Returns true if supported, false if not. If the API call fails, undefined is returned.

Example

function isTorchLevelControlSupported(cameraManager: camera.CameraManager): boolean {
  let isSupported = cameraManager.isTorchLevelControlSupported();
  return isSupported;
}

SetTorchModeOnWithLevel

SetTorchModeOnWithLevel(torchLevel: number): void

Sets the specified brightness level for the flashlight.

Since: 26.0.0

Model restriction: This API can be used only in the stage model.

Atomic service API: This API can be used in atomic services since API version 26.

System capability: SystemCapability.Multimedia.Camera.Core

Parameters

Name	Type	Mandatory	Description
torchLevel	number	Yes	Flashlight brightness level. The value range is [0.0, 1.0] (0.0 indicates the darkest, and 1.0 indicates the brightest).

Error codes

For details about the error codes, see Camera Error Codes.

ID	Error Message
7400201	Camera service fatal error.
7400102	Operation not allowed.

Example

function SetTorchModeOnWithLevel(cameraManager: camera.CameraManager, torchLevel: number): void {
  cameraManager.setTorchModeOnWithLevel(torchLevel);
  return ;
}

getCameraDevice¹⁸⁺

getCameraDevice(position: CameraPosition, type: CameraType): CameraDevice

Obtains the specified camera based on the camera position and type.

Obtains the camera lens of the specified CameraPosition and CameraType. If the returned result is undefined, the camera lens is not found on the current device.

Atomic service API: This API can be used in atomic services since API version 19.

System capability: SystemCapability.Multimedia.Camera.Core

Parameters

Name	Type	Mandatory	Description
position	CameraPosition	Yes	Camera position.
type	CameraType	Yes	Camera type.

Return value

Type	Description
CameraDevice	Camera obtained.

Error codes

For details about the error codes, see Camera Error Codes.

ID	Error Message
7400201	Camera service fatal error.

Example

import { camera } from '@kit.CameraKit';
import { BusinessError } from '@kit.BasicServicesKit';

function getCameraDevice(cameraManager: camera.CameraManager, position: camera.CameraPosition, type: camera.CameraType): void {
  try {
    let curCameraDev: camera.CameraDevice|undefined = undefined;
    curCameraDev = cameraManager.getCameraDevice(position, type);
  } catch (error) {
    // If the operation fails, an error code is returned and processed.
    let err = error as BusinessError;
    console.error(`The getCameraDevice call failed. error code: ${err.code}`);
  }
}

getCameraDevices²³⁺

getCameraDevices(position: CameraPosition, types: Array<CameraType>, connectType: ConnectionType): Array<CameraDevice>

Obtains the list of cameras that meet the search criteria based on the camera position, camera types, and connection type.

Atomic service API: This API can be used in atomic services since API version 23.

System capability: SystemCapability.Multimedia.Camera.Core

Parameters

Name	Type	Mandatory	Description
position	CameraPosition	Yes	Camera position.
types	Array<CameraType>	Yes	Array of camera types.
connectType	ConnectionType	Yes	Camera connection type.

Return value

Type	Description
Array<CameraDevice>	Array of cameras that meet the search criteria.

Error codes

For details about the error codes, see Camera Error Codes.

ID	Error Message
7400201	Camera service fatal error.

Example

import { camera } from '@kit.CameraKit';
import { BusinessError } from '@kit.BasicServicesKit';

function getCameraDevices(cameraManager: camera.CameraManager, position: camera.CameraPosition, types: Array<camera.CameraType>, connectType: camera.ConnectionType): void {
  try {
    let cameraDevs: Array<camera.CameraDevice> = [];
    cameraDevs = cameraManager.getCameraDevices(position, types, connectType);
  } catch (error) {
    // If the operation fails, an error code is returned and processed.
    let err = error as BusinessError;
    console.error(`The getCameraDevices call failed. error code: ${err.code}`);
  }
}

getCameraConcurrentInfos¹⁸⁺

getCameraConcurrentInfos(cameras: Array<CameraDevice>): Array<CameraConcurrentInfo>

Obtains the concurrency information of the specified cameras. If the return value is an empty array, concurrency is not supported.

Atomic service API: This API can be used in atomic services since API version 19.

System capability: SystemCapability.Multimedia.Camera.Core

Parameters

Name	Type	Mandatory	Description
cameras	Array<CameraDevice>	Yes	Array of CameraDevice objects. You are advised to use the front and rear cameras obtained by calling getCameraDevice.

Return value

Type	Description
Array<CameraConcurrentInfo>	Array of concurrency information corresponding to the provided CameraDevice objects, with a one-to-one mapping.

Error codes

For details about the error codes, see Camera Error Codes.

ID	Error Message
7400201	Camera service fatal error.

Example

import { camera } from '@kit.CameraKit';
import { BusinessError } from '@kit.BasicServicesKit';

function getCameraConcurrentInfos(cameraManager: camera.CameraManager,
  cameraDeviceArray: Array<camera.CameraDevice>): Array<camera.CameraConcurrentInfo> {
  let cameraConcurrentInfos: Array<camera.CameraConcurrentInfo> = [];
  try {
    cameraConcurrentInfos = cameraManager.getCameraConcurrentInfos(cameraDeviceArray);
  } catch (error) {
    // If the operation fails, an error code is returned and processed.
    let err = error as BusinessError;
    console.error(`The getCameraConcurrentInfos call failed. error code: ${err.code}`);
  }
  return cameraConcurrentInfos;
}

getSupportedOutputCapability^(deprecated)

getSupportedOutputCapability(camera: CameraDevice): CameraOutputCapability

Obtains the output capability supported by a camera device. This API returns the result synchronously.

NOTE This API is supported since API version 10 and deprecated since API version 11. You are advised to use getSupportedOutputCapability instead.

System capability: SystemCapability.Multimedia.Camera.Core

Parameters

Name	Type	Mandatory	Description
camera	CameraDevice	Yes	CameraDevice instance, which is obtained through getSupportedCameras. An error code is returned if the input parameter is invalid.

Return value

Type	Description
CameraOutputCapability	Camera output capability obtained.

Example

function getSupportedOutputCapability(camera: camera.CameraDevice, cameraManager: camera.CameraManager): camera.CameraOutputCapability {
  let cameraOutputCapability: camera.CameraOutputCapability = cameraManager.getSupportedOutputCapability(camera);
  return cameraOutputCapability;
}

createPhotoOutput^(deprecated)

createPhotoOutput(profile: Profile, surfaceId: string): PhotoOutput

Creates a PhotoOutput instance. This API returns the result synchronously.

NOTE

This API is supported since API version 10 and deprecated since API version 11. You are advised to use createPhotoOutput instead.

This API can only be used to create a PhotoOutput object in JPEG format.

System capability: SystemCapability.Multimedia.Camera.Core

Parameters

Name	Type	Mandatory	Description
profile	Profile	Yes	Supported photo profile, which is obtained through getSupportedOutputCapability.
surfaceId	string	Yes	Surface ID, which is obtained from ImageReceiver.

Return value

Type	Description
PhotoOutput	PhotoOutput instance created. If the operation fails, an error code defined in CameraErrorCode is returned.

Error codes

For details about the error codes, see Camera Error Codes.

ID	Error Message
7400101	Parameter missing or parameter type incorrect.

import { BusinessError } from '@kit.BasicServicesKit';

function createPhotoOutput(cameraOutputCapability: camera.CameraOutputCapability, cameraManager: camera.CameraManager, surfaceId: string): camera.PhotoOutput|undefined {
  let profile: camera.Profile = cameraOutputCapability.photoProfiles[0];
  let photoOutput: camera.PhotoOutput|undefined = undefined;
  try {
    photoOutput = cameraManager.createPhotoOutput(profile, surfaceId);
  } catch (error) {
    // If the operation fails, error.code is returned and processed.
    let err = error as BusinessError;
    console.error(`The createPhotoOutput call failed. error code: ${err.code}`);
  }
  return photoOutput;
}

createCaptureSession^(deprecated)

createCaptureSession(): CaptureSession

Creates a CaptureSession instance. This API returns the result synchronously.

NOTE This API is supported since API version 10 and deprecated since API version 11. You are advised to use createSession instead.

System capability: SystemCapability.Multimedia.Camera.Core

Return value

Type	Description
CaptureSession	CaptureSession instance created. If the operation fails, an error code defined in CameraErrorCode is returned.

Error codes

For details about the error codes, see Camera Error Codes.

ID	Error Message
7400201	Camera service fatal error.

Example

import { BusinessError } from '@kit.BasicServicesKit';

function createCaptureSession(cameraManager: camera.CameraManager): camera.CaptureSession|undefined {
  let captureSession: camera.CaptureSession|undefined = undefined;
  try {
    captureSession = cameraManager.createCaptureSession();
  } catch (error) {
    // If the operation fails, error.code is returned and processed.
    let err = error as BusinessError;
    console.error(`createCaptureSession error. error code: ${err.code}`);
  }
  return captureSession;
}

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Interface (CameraManager)

Modules to Import

getSupportedCameras

getSupportedSceneModes¹¹⁺

getSupportedOutputCapability¹¹⁺

getSupportedFullOutputCapability²³⁺

isCameraMuted

createCameraInput

createCameraInput

createPreviewOutput

createPreviewOutput¹²⁺

createDeferredPreviewOutput²⁴⁺

createPhotoOutput¹¹⁺

createVideoOutput

createVideoOutput¹²⁺

createMetadataOutput

createSession¹¹⁺

on('cameraStatus')

off('cameraStatus')

on('foldStatusChange')¹²⁺

off('foldStatusChange')¹²⁺

isTorchSupported¹¹⁺

isTorchModeSupported¹¹⁺

getTorchMode¹¹⁺

setTorchMode¹¹⁺

on('torchStatusChange')¹¹⁺

off('torchStatusChange')¹¹⁺

isTorchLevelControlSupported

SetTorchModeOnWithLevel

getCameraDevice¹⁸⁺

getCameraDevices²³⁺

getCameraConcurrentInfos¹⁸⁺

getSupportedOutputCapability^(deprecated)

createPhotoOutput^(deprecated)

createCaptureSession^(deprecated)

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最热博客

最新博客

Interface (CameraManager)

Modules to Import

getSupportedCameras

getSupportedSceneModes11+

getSupportedOutputCapability11+

getSupportedFullOutputCapability23+

isCameraMuted

createCameraInput

createCameraInput

createPreviewOutput

createPreviewOutput12+

createDeferredPreviewOutput24+

createPhotoOutput11+

createVideoOutput

createVideoOutput12+

createMetadataOutput

createSession11+

on('cameraStatus')

off('cameraStatus')

on('foldStatusChange')12+

off('foldStatusChange')12+

isTorchSupported11+

isTorchModeSupported11+

getTorchMode11+

setTorchMode11+

on('torchStatusChange')11+

off('torchStatusChange')11+

isTorchLevelControlSupported

SetTorchModeOnWithLevel

getCameraDevice18+

getCameraDevices23+

getCameraConcurrentInfos18+

getSupportedOutputCapability(deprecated)

createPhotoOutput(deprecated)

createCaptureSession(deprecated)

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最新博客

getSupportedSceneModes¹¹⁺

getSupportedOutputCapability¹¹⁺

getSupportedFullOutputCapability²³⁺

createPreviewOutput¹²⁺

createDeferredPreviewOutput²⁴⁺

createPhotoOutput¹¹⁺

createVideoOutput¹²⁺

createSession¹¹⁺

on('foldStatusChange')¹²⁺

off('foldStatusChange')¹²⁺

isTorchSupported¹¹⁺

isTorchModeSupported¹¹⁺

getTorchMode¹¹⁺

setTorchMode¹¹⁺

on('torchStatusChange')¹¹⁺

off('torchStatusChange')¹¹⁺

getCameraDevice¹⁸⁺

getCameraDevices²³⁺

getCameraConcurrentInfos¹⁸⁺

getSupportedOutputCapability^(deprecated)

createPhotoOutput^(deprecated)

createCaptureSession^(deprecated)