程序包 ohos.media.camera.device

类 CameraStateCallback

java.lang.Object

ohos.media.camera.device.CameraStateCallback

public abstract class CameraStateCallback
extends Object

Provides callbacks for camera running states.

A callback is an input parameter of CameraKit.createCamera(String, CameraStateCallback, EventHandler) and is used throughout the camera lifecycle from creation to release.

从以下版本开始:

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SystemCapability

SystemCapability.Multimedia#CAMERA

嵌套类概要

嵌套类

限定符和类型	类	说明
static interface	CameraStateCallback.ErrorCode	Defines error codes used during the camera lifecycle.

构造器概要

构造器

构造器	说明
CameraStateCallback()

方法概要

限定符和类型	方法	说明
void	onCaptureIdle(Camera camera)	Called after the camera is successfully configured, and did not start capturing or has stopped capturing.
void	onCaptureRun(Camera camera)	Called when the capture starts.
void	onConfigured(Camera camera)	Called when the camera is successfully configured by Camera#configure(CameraConfig).
void	onConfigureFailed(Camera camera, int errorCode)	Called when camera configuration fails.
void	onCreated(Camera camera)	Called when the camera is successfully created by CameraKit.createCamera(String, CameraStateCallback, EventHandler).
void	onCreateFailed(String cameraId, int errorCode)	Called when the camera fails to be created.
void	onFatalError(Camera camera, int errorCode)	Called when an error occurs throughout the camera lifecycle.
void	onPartialConfigured(Camera camera)	Called when the camera is successfully configured by Camera#configure after CameraConfig.Builder#addDeferredSurfaceSize was called to set the deferred surface size.
void	onReleased(Camera camera)	Called after the camera is released.

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

构造器详细资料

CameraStateCallback

public CameraStateCallback()

方法详细资料

onCreated

public void onCreated(Camera camera)

Called when the camera is successfully created by CameraKit.createCamera(String, CameraStateCallback, EventHandler).

参数:

camera - Indicates the camera.

从以下版本开始:

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onCreateFailed

public void onCreateFailed(String cameraId,
                           int errorCode)

Called when the camera fails to be created.

参数:

cameraId - Indicates the camera ID.

errorCode - Indicates the error code defined in CameraStateCallback.ErrorCode.

从以下版本开始:

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onConfigured

public void onConfigured(Camera camera)

Called when the camera is successfully configured by Camera#configure(CameraConfig).

参数:

camera - Indicates the camera.

从以下版本开始:

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onPartialConfigured

public void onPartialConfigured(Camera camera)

Called when the camera is successfully configured by Camera#configure after CameraConfig.Builder#addDeferredSurfaceSize was called to set the deferred surface size.

After this callback is invoked, non-deferred surfaces that have been configured can be used for frame capture by calling Camera#triggerSingleCapture, Camera#triggerMultiCapture, or Camera#triggerLoopingCapture, whereas the deferred surface cannot be used for frame capture until it is added by CameraConfig.Builder#addDeferredSurface.

参数:

camera - Indicates the camera.

从以下版本开始:

3

onConfigureFailed

public void onConfigureFailed(Camera camera,
                              int errorCode)

Called when camera configuration fails.

Configure the camera again.

参数:

camera - Indicates the camera.

errorCode - Indicates the failure error code defined in CameraStateCallback.ErrorCode.

从以下版本开始:

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onReleased

public void onReleased(Camera camera)

Called after the camera is released.

参数:

camera - Indicates the camera.

从以下版本开始:

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onFatalError

public void onFatalError(Camera camera,
                         int errorCode)

Called when an error occurs throughout the camera lifecycle.

When a fatal error occurs, the camera will release itself, and CameraStateCallback#onReleased(Camera) is called.

参数:

camera - Indicates the camera.

errorCode - Indicates the failure error code defined in CameraStateCallback.ErrorCode.

从以下版本开始:

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onCaptureRun

public void onCaptureRun(Camera camera)

Called when the capture starts.

参数:

camera - Indicates the created Camera object.

从以下版本开始:

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onCaptureIdle

public void onCaptureIdle(Camera camera)

Called after the camera is successfully configured, and did not start capturing or has stopped capturing.

参数:

camera - Indicates the created Camera object.

从以下版本开始:

3