!23759 【cameraFramework】js改ts

Merge pull request !23759 from 章超123/master

zh-cn/application-dev/media/camera-performance-improvement.md

@@ -33,7 +33,7 @@
 
 [各类Context的获取方式](../application-models/application-context-stage.md)
 
-```js
+```ts
 import camera from '@ohos.multimedia.camera';
 import featureAbility from '@ohos.ability.featureAbility';
 
@@ -83,7 +83,7 @@ async function preview(context: featureAbility.Context, cameraInfo: camera.Camer
 ![](figures/quick-thumbnail-sequence-diagram.png)
 
 [各类Context的获取方式](../application-models/application-context-stage.md)
-```js
+```ts
 import camera from '@ohos.multimedia.camera';
 import { BusinessError } from '@ohos.base';
 import image from '@ohos.multimedia.image';
@@ -152,7 +152,7 @@ function showOrSavePicture(pixelMap: image.PixelMap): void {
 
 - **桌面应用**
 
-  ```js
+  ```ts
   import camera from '@ohos.multimedia.camera';
   import { BusinessError } from '@ohos.base';
   import featureAbility from '@ohos.ability.featureAbility';
@@ -174,7 +174,7 @@ function showOrSavePicture(pixelMap: image.PixelMap): void {
 
   具体申请方式及校验方式，请参考[访问控制授权申请指导](../security/accesstoken-guidelines.md)。
 
-  ```js
+  ```ts
   import camera from '@ohos.multimedia.camera';
   import { BusinessError } from '@ohos.base';
   import featureAbility from '@ohos.ability.featureAbility';

zh-cn/application-dev/reference/apis/js-apis-camera.md

@@ -6,13 +6,13 @@
 
 ## 导入模块
 
-```js
+```ts
 import camera from '@ohos.multimedia.camera';
 ```
 
 ## camera.getCameraManager
 
-getCameraManager(context: Context): CameraManager
+getCameraManager(context: featureAbility.Context): CameraManager
 
 获取相机管理器实例，同步返回结果。
 
@@ -41,12 +41,24 @@ getCameraManager(context: Context): CameraManager
 
 **示例：**
 
-```js
-let cameraManager = camera.getCameraManager(context);
+```ts
+import featureAbility from '@ohos.ability.featureAbility';
+import { BusinessError } from '@ohos.base';
+
+function getCameraManager(context: featureAbility.Context): camera.CameraManager {
+  let cameraManager: camera.CameraManager;
+  try {
+    cameraManager = camera.getCameraManager(context);
+  } catch (error) {
+    let err = error as BusinessError;
+    console.error(`The getCameraManager call failed. error code: ${err.code}`);
+  }
+  return cameraManager;
+}
 ```
 ## camera.getModeManager
 
-getModeManager(context: Context): ModeManager
+getModeManager(context: featureAbility.Context): ModeManager
 
 获取模式化管理器实例，同步返回结果。
 
@@ -79,8 +91,20 @@ getModeManager(context: Context): ModeManager
 
 **示例：**
 
-```js
-let modeManager = camera.getModeManager(context);
+```ts
+import featureAbility from '@ohos.ability.featureAbility';
+import { BusinessError } from '@ohos.base';
+
+function getModeManager(context: featureAbility.Context): camera.ModeManager {
+  let modeManager: camera.ModeManager;
+  try {
+    modeManager = camera.getModeManager(context);
+  } catch (error) {
+    let err = error as BusinessError;
+    console.error(`The getModeManager call failed. error code: ${err.code}`);
+  }
+  return modeManager;
+}
 ```
 
 ## CameraStatus
@@ -241,9 +265,19 @@ getSupportedCameras(): Array\<CameraDevice\>
 
 **示例：**
 
-```js
-let cameras = cameraManager.getSupportedCameras();
+```ts
+import { BusinessError } from '@ohos.base';
 
+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;
+}
 ```
 
 ### getSupportedOutputCapability
@@ -268,11 +302,11 @@ getSupportedOutputCapability(camera:CameraDevice): CameraOutputCapability
 
 **示例：**
 
-```js
-let cameras = cameraManager.getSupportedCameras();
-let cameraDevice = cameras[0];
-let cameraOutputCapability = cameraManager.getSupportedOutputCapability(cameraDevice);
-
+```ts
+function getSupportedOutputCapability(cameraDevice: camera.CameraDevice, cameraManager: camera.CameraManager): camera.CameraOutputCapability {
+  let cameraOutputCapability: camera.CameraOutputCapability = cameraManager.getSupportedOutputCapability(cameraDevice);
+  return cameraOutputCapability;
+}
 ```
 
 ### isCameraMuted
@@ -293,8 +327,11 @@ isCameraMuted(): boolean
 
 **示例：**
 
-```js
-let ismuted = cameraManager.isCameraMuted();
+```ts
+function isCameraMuted(cameraManager: camera.CameraManager): boolean {
+  let isMuted: boolean = cameraManager.isCameraMuted();
+  return isMuted;
+}
 ```
 
 ### isCameraMuteSupported
@@ -315,8 +352,11 @@ isCameraMuteSupported(): boolean
 
 **示例：**
 
-```js
-let ismutesuppotred = cameraManager.isCameraMuteSupported();
+```ts
+function isCameraMuteSupported(cameraManager: camera.CameraManager): boolean {
+  let isMuteSupported: boolean = cameraManager.isCameraMuteSupported();
+  return isMuteSupported;
+}
 ```
 
 ### muteCamera
@@ -337,9 +377,11 @@ muteCamera(mute: boolean): void
 
 **示例：**
 
-```js
-let mute = true;
-cameraManager.muteCamera(mute);
+```ts
+function muteCamera(cameraManager: camera.CameraManager): void {
+  let mute: boolean = true;
+  cameraManager.muteCamera(mute);
+}
 ```
 
 ### createCameraInput
@@ -374,14 +416,19 @@ createCameraInput(camera: CameraDevice): CameraInput
 
 **示例：**
 
-```js
-let cameraDevice = cameras[0];
-let cameraInput;
-try {
-	cameraInput = cameraManager.createCameraInput(cameraDevice);
-} catch (error) {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function createCameraInput(cameraDevice: camera.CameraDevice, cameraManager: camera.CameraManager): camera.CameraInput {
+  let cameraInput: camera.CameraInput;
+  try {
+    cameraInput = cameraManager.createCameraInput(cameraDevice);
+  } catch (error) {
     // 失败返回错误码error.code并处理
-    console.log(error.code);
+    let err = error as BusinessError;
+    console.error(`The createCameraInput call failed. error code: ${err.code}`);
+  }
+  return cameraInput;
 }
 ```
 
@@ -418,16 +465,21 @@ createCameraInput(position: CameraPosition, type: CameraType): CameraInput
 
 **示例：**
 
-```js
-let cameraDevice = cameras[0];
-let position = cameraDevice.cameraPosition;
-let type = cameraDevice.cameraType;
-let cameraInput;
-try {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function createCameraInput(cameraDevice: camera.CameraDevice, cameraManager: camera.CameraManager): camera.CameraInput {
+  let position: camera.CameraPosition = cameraDevice.cameraPosition;
+  let type: camera.CameraType = cameraDevice.cameraType;
+  let cameraInput: camera.CameraInput;
+  try {
     cameraInput = cameraManager.createCameraInput(position, type);
-} catch (error) {
+  } catch (error) {
     // 失败返回错误码error.code并处理
-    console.log(error.code);
+    let err = error as BusinessError;
+    console.log(`The createCameraInput call failed. error code: ${err.code}`);
+  }
+  return cameraInput;
 }
 ```
 
@@ -462,14 +514,20 @@ createPreviewOutput(profile: Profile, surfaceId: string): PreviewOutput
 
 **示例：**
 
-```js
-let profile = cameraOutputCapability.previewProfiles[0];
-let previewOutput;
-try {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function createPreviewOutput(cameraOutputCapability: camera.CameraOutputCapability, cameraManager: camera.CameraManager, surfaceId: string): camera.PreviewOutput {
+  let profile: camera.Profile = cameraOutputCapability.previewProfiles[0];
+  let previewOutput: camera.PreviewOutput;
+  try {
     previewOutput = cameraManager.createPreviewOutput(profile, surfaceId);
-} catch (error) {
+  } catch (error) {
     // 失败返回错误码error.code并处理
-    console.log(error.code);
+    let err = error as BusinessError;
+    console.log(`The createPreviewOutput call failed. error code: ${err.code}`);
+  }
+  return previewOutput;
 }
 ```
 
@@ -504,14 +562,20 @@ createPhotoOutput(profile: Profile, surfaceId: string): PhotoOutput
 
 **示例：**
 
-```js
-let profile = cameraOutputCapability.photoProfiles[0];
-let photoOutput;
-try {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function createPhotoOutput(cameraOutputCapability: camera.CameraOutputCapability, cameraManager: camera.CameraManager, surfaceId: string): camera.PhotoOutput {
+  let profile: camera.Profile = cameraOutputCapability.photoProfiles[0];
+  let photoOutput: camera.PhotoOutput;
+  try {
     photoOutput = cameraManager.createPhotoOutput(profile, surfaceId);
-} catch (error) {
+  } catch (error) {
     // 失败返回错误码error.code并处理
-    console.log(error.code);
+    let err = error as BusinessError;
+    console.log(`The createPhotoOutput call failed. error code: ${err.code}`);
+  }
+  return photoOutput;
 }
 ```
 
@@ -546,14 +610,20 @@ createVideoOutput(profile: VideoProfile, surfaceId: string): VideoOutput
 
 **示例：**
 
-```js
-let profile = cameraOutputCapability.videoProfiles[0];
-let videoOutput;
-try {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function createVideoOutput(cameraOutputCapability: camera.CameraOutputCapability, cameraManager: camera.CameraManager, surfaceId: string): camera.VideoOutput {
+  let profile: camera.VideoProfile = cameraOutputCapability.videoProfiles[0];
+  let videoOutput: camera.VideoOutput;
+  try {
     videoOutput = cameraManager.createVideoOutput(profile, surfaceId);
-} catch (error) {
+  } catch (error) {
     // 失败返回错误码error.code并处理
-    console.log(error.code);
+    let err = error as BusinessError;
+    console.log(`The createPhotoOutput call failed. error code: ${err.code}`);
+  }
+  return videoOutput;
 }
 ```
 
@@ -587,14 +657,19 @@ createMetadataOutput(metadataObjectTypes:Array\<MetadataObjectType\>): MetadataO
 
 **示例：**
 
-```js
-let metadataObjectTypes = cameraOutputCapability.supportedMetadataObjectTypes;
-let metadataOutput;
-try {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function createMetadataOutput(cameraManager: camera.CameraManager, cameraOutputCapability: camera.CameraOutputCapability): void {
+  let metadataObjectTypes: Array<camera.MetadataObjectType> = cameraOutputCapability.supportedMetadataObjectTypes;
+  let metadataOutput: camera.MetadataOutput;
+  try {
     metadataOutput = cameraManager.createMetadataOutput(metadataObjectTypes);
-} catch (error) {
+  } catch (error) {
     // 失败返回错误码error.code并处理
-    console.log(error.code);
+    let err = error as BusinessError;
+    console.log(`createMetadataOutput error. error code: ${err.code}`);
+  }
 }
 ```
 
@@ -622,13 +697,19 @@ createCaptureSession(): CaptureSession
 
 **示例：**
 
-```js
-let captureSession;
-try {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function createCaptureSession(cameraManager: camera.CameraManager): camera.CaptureSession {
+  let captureSession: camera.CaptureSession;
+  try {
     captureSession = cameraManager.createCaptureSession();
-} catch (error) {
+  } catch (error) {
     // 失败返回错误码error.code并处理
-    console.log(error.code);
+    let err = error as BusinessError;
+    console.log(`createCaptureSession error. error code: ${err.code}`);
+  }
+  return captureSession;
 }
 ```
 
@@ -649,11 +730,15 @@ on(type: 'cameraStatus', callback: AsyncCallback\<CameraStatusInfo\>): void
 
 **示例：**
 
-```js
-cameraManager.on('cameraStatus', (err, cameraStatusInfo) => {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function registerCameraStatus(cameraManager: camera.CameraManager): void {
+  cameraManager.on('cameraStatus', (err: BusinessError, cameraStatusInfo: camera.CameraStatusInfo) => {
     console.log(`camera : ${cameraStatusInfo.camera.cameraId}`);
     console.log(`status: ${cameraStatusInfo.status}`);
-})
+  });
+}
 ```
 
 ### off('cameraStatus')
@@ -673,8 +758,10 @@ off(type: 'cameraStatus', callback?: AsyncCallback\<CameraStatusInfo\>): void
 
 **示例：**
 
-```js
-cameraManager.off('cameraStatus')
+```ts
+function unregisterCameraStatus(cameraManager: camera.CameraManager): void {
+  cameraManager.off('cameraStatus');
+}
 ```
 
 ### on('cameraMute')
@@ -696,10 +783,15 @@ on(type: 'cameraMute', callback: AsyncCallback\<boolean\>): void
 
 **示例：**
 
-```js
-cameraManager.on('cameraMute', (err, curMuetd) => {
-    let isMuted = curMuetd;
-})
+```ts
+import { BusinessError } from '@ohos.base';
+
+function registerCameraMute(cameraManager: camera.CameraManager): void {
+  cameraManager.on('cameraMute', (err: BusinessError, curMuted: boolean) => {
+    let isMuted: boolean = curMuted;
+    console.log(`cameraMute status: ${isMuted}`);
+  })
+}
 ```
 
 ### off('cameraMute')
@@ -721,12 +813,17 @@ off(type: 'cameraMute', callback?: AsyncCallback\<boolean\>): void
 
 **示例：**
 
-```js
-func(err, curMuetd) {
-    let isMuted = curMuetd;
+```ts
+import { BusinessError } from '@ohos.base';
+
+function callback(err: BusinessError, curMuetd: boolean): void {
+  let isMuted: boolean = curMuetd;
+}
+
+function unregisterCameraMute(cameraManager: camera.CameraManager): void {
+  cameraManager.on('cameraMute', callback);
+  cameraManager.off('cameraMute', callback);
 }
-cameraManager.on('cameraMute', func)
-cameraManager.off('cameraMute', func)
 ```
 
 ### isPrelaunchSupported
@@ -761,11 +858,15 @@ isPrelaunchSupported(camera: CameraDevice): boolean
 
 **示例：**
 
-```js
-this.cameraManager = camera.getCameraManager(globalThis.abilityContext);
-let cameras = this.cameraManager.getSupportedCameras()
-if(this.cameraManager.isPrelaunchSupported(cameras[0])) {
-     this.cameraManager.setPrelaunchConfig({cameraDevice: cameras[0]});
+```ts
+import featureAbility from '@ohos.ability.featureAbility';
+
+function isPreLaunchSupported(context: featureAbility.Context): boolean {
+  let cameraManager: camera.CameraManager = camera.getCameraManager(context);
+  let cameras: Array<camera.CameraDevice> = cameraManager.getSupportedCameras();
+  let isSupported: boolean = cameraManager.isPrelaunchSupported(cameras[0]);
+  console.log(`PreLaunch supported states: ${isSupported}`);
+  return isSupported;
 }
 ```
 
@@ -796,15 +897,21 @@ setPrelaunchConfig(prelaunchConfig: PrelaunchConfig): void
 
 **示例：**
 
-```js
-this.cameraManager = camera.getCameraManager(globalThis.abilityContext);
-let cameras = this.cameraManager.getSupportedCameras()
-if(this.cameraManager.isPrelaunchSupported(cameras[0])) {
+```ts
+import featureAbility from '@ohos.ability.featureAbility';
+import { BusinessError } from '@ohos.base';
+
+function setPrelaunchConfig(context: featureAbility.Context): void {
+  let cameraManager: camera.CameraManager = camera.getCameraManager(context);
+  let cameras: Array<camera.CameraDevice> = cameraManager.getSupportedCameras();
+  if(cameraManager.isPrelaunchSupported(cameras[0])) {
     try {
-      this.cameraManager.setPrelaunchConfig({cameraDevice: cameras[0]});
+      cameraManager.setPrelaunchConfig({cameraDevice: cameras[0]});
     } catch (error) {
-       console.error(`catch error: Code: ${error.code}, message: ${error.message}`);
+      let err = error as BusinessError;
+      console.error(`setPrelaunchConfig error. Code: ${err.code}, message: ${err.message}`);
     }
+  }
 }
 ```
 
@@ -820,12 +927,18 @@ prelaunch(): void
 
 **示例：**
 
-```js
-this.cameraManager = camera.getCameraManager(globalThis.abilityContext);
-try {
-  this.cameraManager.prelaunch();
-} catch (error) {
-  console.error(`catch error: Code: ${error.code}, message: ${error.message}`);
+```ts
+import featureAbility from '@ohos.ability.featureAbility';
+import { BusinessError } from '@ohos.base';
+
+function preLaunch(context: featureAbility.Context): void {
+  let cameraManager: camera.CameraManager = camera.getCameraManager(context);
+  try {
+    cameraManager.prelaunch();
+  } catch (error) {
+    let err = error as BusinessError;
+    console.error(`prelaunch error. Code: ${error.code}, message: ${error.message}`);
+  }
 }
 ```
 
@@ -861,10 +974,10 @@ createDeferredPreviewOutput(profile: Profile): PreviewOutput
 
 **示例：**
 
-```js
-function getDeferredPreviewOutput(context: Context, previewProfile: camera.Profile): Promise<PreviewOutput> {
-  const cameraManager = camera.getCameraManager(context);
-  const output: Promise<PreviewOutput> = cameraManager.createDeferredPreviewOutput(previewProfile);
+```ts
+function getDeferredPreviewOutput(context: Context, previewProfile: camera.Profile): camera.PreviewOutput {
+  const cameraManager: camera.CameraManager = camera.getCameraManager(context);
+  const output: camera.PreviewOutput = cameraManager.createDeferredPreviewOutput(previewProfile);
   return output;
 }
 ```
@@ -896,9 +1009,11 @@ getSupportedModes(device: CameraDevice): Array\<CameraMode\>
 
 **示例：**
 
-```js
-let cameraModes = cameraManager.getSupportedModes(cameraDevices[0]);
-
+```ts
+function getSupportedModes(cameraManager: camera.CameraManager, cameraDevice: camera.CameraDevice): Array<camera.CameraMode> {
+  let cameraModes: Array<camera.CameraMode> = cameraManager.getSupportedModes(cameraDevice);
+  return cameraModes;
+}
 ```
 
 ### getSupportedOutputCapability
@@ -926,13 +1041,21 @@ getSupportedOutputCapability(device:CameraDevice, mode: CameraMode): CameraOutpu
 
 **示例：**
 
-```js
-let cameras = cameraManager.getSupportedCameras();
-let cameraDevice = cameras[0];
-let cameraModes = modeManager.getSupportedModes(cameraDevice);
-let mode = cameraModes[0]
-let cameraOutputCapability = modeManager.getSupportedOutputCapability(cameraDevice, mode);
-
+```ts
+function getSupportedOutputCapability(cameraManager: camera.CameraManager, modeManager: camera.ModeManager): camera.CameraOutputCapability {
+  let cameras: Array<camera.CameraDevice> = cameraManager.getSupportedCameras();
+  if (cameras == undefined || cameras.length <= 0) {
+    return;
+  }
+  let cameraDevice: camera.CameraDevice = cameras[0];
+  let cameraModes: Array<camera.CameraMode> = modeManager.getSupportedModes(cameraDevice);
+  if (cameraModes === undefined || cameraModes.length <= 0) {
+    return;
+  }
+  let mode: camera.CameraMode = cameraModes[0];
+  let cameraOutputCapability: camera.CameraOutputCapability = modeManager.getSupportedOutputCapability(cameraDevice, mode);
+  return cameraOutputCapability;
+}
 ```
 ### createCaptureSession
 
@@ -958,13 +1081,29 @@ createCaptureSession(mode: CameraMode): CaptureSession
 
 **示例：**
 
-```js
-let cameras = cameraManager.getSupportedCameras();
-let cameraDevice = cameras[0];
-let cameraModes = modeManager.getSupportedModes(cameraDevice);
-let mode = cameraModes[0]
-let captureSession = modeManager.createCaptureSession(mode);
-
+```ts
+import { BusinessError } from '@ohos.base';
+
+function createCaptureSession(cameraManager: camera.CameraManager, modeManager: camera.ModeManager): camera.CaptureSession {
+  let cameras: Array<camera.CameraDevice> = cameraManager.getSupportedCameras();
+  if (cameras == undefined || cameras.length <= 0) {
+    return;
+  }
+  let cameraDevice: camera.CameraDevice = cameras[0];
+  let cameraModes: Array<camera.CameraMode> = modeManager.getSupportedModes(cameraDevice);
+  if (cameraModes === undefined || cameraModes.length <= 0) {
+    return;
+  }
+  let mode: camera.CameraMode = cameraModes[0];
+  let captureSession: camera.CaptureSession
+  try {
+    captureSession = modeManager.createCaptureSession(mode);
+  } catch (error) {
+    let err = error as BusinessError;
+    console.error(`The createCaptureSession call failed. error code: ${err.code}`);
+  }
+  return captureSession;
+}
 ```
 
 ## PrelaunchConfig
@@ -1123,14 +1262,18 @@ open\(callback: AsyncCallback\<void\>\): void
 
 **示例：**
 
-```js
-cameraInput.open((err) => {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function openCameraInput(cameraInput: camera.CameraInput): void {
+  cameraInput.open((err: BusinessError) => {
     if (err) {
-        console.error(`Failed to open the camera. ${err.code}`);
-        return;
+      console.error(`Failed to open the camera. ${err.code}`);
+      return;
     }
     console.log('Callback returned with camera opened.');
-})
+  });
+}
 ```
 
 ### open
@@ -1159,12 +1302,16 @@ open(): Promise\<void\>
 
 **示例：**
 
-```js
-cameraInput.open().then(() => {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function openCameraInput(cameraInput: camera.CameraInput): void {
+  cameraInput.open().then(() => {
     console.log('Promise returned with camera opened.');
-}).catch((err) => {
+  }).catch((err: BusinessError) => {
     console.error(`Failed to open the camera. ${err.code}`);
-});
+  });
+}
 ```
 
 ### close
@@ -1191,14 +1338,18 @@ close\(callback: AsyncCallback\<void\>\): void
 
 **示例：**
 
-```js
-cameraInput.close((err) => {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function closeCameraInput(cameraInput: camera.CameraInput): void {
+  cameraInput.close((err: BusinessError) => {
     if (err) {
-        console.error(`Failed to close the cameras. ${err.code}`);
-        return;
+      console.error(`Failed to close the cameras. ${err.code}`);
+      return;
     }
     console.log('Callback returned with camera closed.');
-})
+  });
+}
 ```
 
 ### close
@@ -1225,12 +1376,16 @@ close(): Promise\<void\>
 
 **示例：**
 
-```js
-cameraInput.close().then(() => {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function closeCameraInput(cameraInput: camera.CameraInput): void {
+  cameraInput.close().then(() => {
     console.log('Promise returned with camera closed.');
-}).catch((err) => {
+  }).catch((err: BusinessError) => {
     console.error(`Failed to close the cameras. ${err.code}`);
-});
+  });
+}
 ```
 
 ### on('error')
@@ -1251,10 +1406,14 @@ on(type: 'error', camera:CameraDevice, callback: ErrorCallback): void
 
 **示例：**
 
-```js
-cameraInput.on('error', cameraDevice, (error) => {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function registerCameraInputError(cameraInput: camera.CameraInput, cameraDevice: camera.CameraDevice): void {
+  cameraInput.on('error', cameraDevice, (error: BusinessError) => {
     console.log(`Camera input error code: ${error.code}`);
-})
+  });
+}
 ```
 
 ### off('error')
@@ -1275,8 +1434,11 @@ off(type: 'error', camera:CameraDevice, callback?: ErrorCallback): void
 
 **示例：**
 
-```js
-cameraInput.off('error', cameraDevice)
+```ts
+
+function unregisterCameraInputError(cameraInput: camera.CameraInput, cameraDevice: camera.CameraDevice): void {
+  cameraInput.off('error', cameraDevice);
+}
 ```
 
 ## FlashMode
@@ -1371,12 +1533,17 @@ beginConfig(): void
 
 **示例：**
 
-```js
-try {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function beginConfig(captureSession: camera.CaptureSession): void {
+  try {
     captureSession.beginConfig();
-} catch (error) {
+  } catch (error) {
     // 失败返回错误码error.code并处理
-    console.log(error.code);
+    let err = error as BusinessError;
+    console.error(`The beginConfig call failed. error code: ${err.code}`);
+  }
 }
 ```
 
@@ -1405,14 +1572,18 @@ commitConfig(callback: AsyncCallback\<void\>): void
 
 **示例：**
 
-```js
-captureSession.commitConfig((err) => {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function commitConfig(captureSession: camera.CaptureSession): void {
+  captureSession.commitConfig((err: BusinessError) => {
     if (err) {
-        console.log('Failed to commitConfig '+ err.code);
-        return;
+      console.error(`The commitConfig call failed. error code: ${err.code}`);
+      return;
     }
     console.log('Callback invoked to indicate the commit config success.');
-});
+  });
+}
 ```
 
 ### commitConfig
@@ -1440,13 +1611,17 @@ commitConfig(): Promise\<void\>
 
 **示例：**
 
-```js
-captureSession.commitConfig().then(() => {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function commitConfig(captureSession: camera.CaptureSession): void {
+  captureSession.commitConfig().then(() => {
     console.log('Promise returned to indicate the commit config success.');
-}).catch((err) => {
+  }).catch((err: BusinessError) => {
     // 失败返回错误码error.code并处理
-    console.log('Failed to commitConfig '+ err.code);
-});
+    console.error(`The commitConfig call failed. error code: ${err.code}`);
+  });
+}
 ```
 
 ### addInput
@@ -1480,12 +1655,17 @@ addInput(cameraInput: CameraInput): void
 
 **示例：**
 
-```js
-try {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function addInput(captureSession: camera.CaptureSession, cameraInput: camera.CameraInput): void {
+  try {
     captureSession.addInput(cameraInput);
-} catch (error) {
+  } catch (error) {
     // 失败返回错误码error.code并处理
-    console.log(error.code);
+    let err = error as BusinessError;
+    console.log(`The addInput call failed. error code: ${err.code}`);
+  }
 }
 ```
 
@@ -1520,12 +1700,17 @@ removeInput(cameraInput: CameraInput): void
 
 **示例：**
 
-```js
-try {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function removeInput(captureSession: camera.CaptureSession, cameraInput: camera.CameraInput): void {
+  try {
     captureSession.removeInput(cameraInput);
-} catch (error) {
+  } catch (error) {
     // 失败返回错误码error.code并处理
-    console.log(error.code);
+    let err = error as BusinessError;
+    console.log(`The removeInput call failed. error code: ${err.code}`);
+  }
 }
 ```
 
@@ -1560,12 +1745,17 @@ addOutput(cameraOutput: CameraOutput): void
 
 **示例：**
 
-```js
-try {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function addOutput(captureSession: camera.CaptureSession, cameraOutput: camera.CameraOutput): void {
+  try {
     captureSession.addOutput(cameraOutput);
-} catch (error) {
+  } catch (error) {
     // 失败返回错误码error.code并处理
-    console.log(error.code);
+    let err = error as BusinessError;
+    console.log(`The addOutput call failed. error code: ${err.code}`);
+  }
 }
 ```
 
@@ -1600,12 +1790,17 @@ removeOutput(cameraOutput: CameraOutput): void
 
 **示例：**
 
-```js
-try {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function removeOutput(captureSession: camera.CaptureSession, previewOutput: camera.PreviewOutput): void {
+  try {
     captureSession.removeOutput(previewOutput);
-} catch (error) {
+  } catch (error) {
     // 失败返回错误码error.code并处理
-    console.log(error.code);
+    let err = error as BusinessError;
+    console.log(`The removeOutput call failed. error code: ${err.code}`);
+  }
 }
 ```
 
@@ -1634,14 +1829,18 @@ start\(callback: AsyncCallback\<void\>\): void
 
 **示例：**
 
-```js
-captureSession.start((err) => {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function startCaptureSession(captureSession: camera.CaptureSession): void {
+  captureSession.start((err: BusinessError) => {
     if (err) {
-        console.error(`Failed to start the session ${err.code}`);
-        return;
+      console.error(`Failed to start the session ${err.code}`);
+      return;
     }
     console.log('Callback invoked to indicate the session start success.');
-});
+  });
+}
 ```
 
 ### start
@@ -1669,12 +1868,16 @@ start\(\): Promise\<void\>
 
 **示例：**
 
-```js
-captureSession.start().then(() => {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function startCaptureSession(captureSession: camera.CaptureSession): void {
+  captureSession.start().then(() => {
     console.log('Promise returned to indicate the session start success.');
-}).catch((err) => {
+  }).catch((err: BusinessError) => {
     console.error(`Failed to start the session ${err.code}`);
-});
+  });
+}
 ```
 
 ### stop
@@ -1701,14 +1904,18 @@ stop\(callback: AsyncCallback\<void\>\): void
 
 **示例：**
 
-```js
-captureSession.stop((err) => {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function stopCaptureSession(captureSession: camera.CaptureSession): void {
+  captureSession.stop((err: BusinessError) => {
     if (err) {
-        console.error(`Failed to stop the session ${err.code}`);
-        return;
+      console.error(`Failed to stop the session ${err.code}`);
+      return;
     }
     console.log('Callback invoked to indicate the session stop success.');
-});
+  });
+}
 ```
 
 ### stop
@@ -1735,12 +1942,16 @@ stop(): Promise\<void\>
 
 **示例：**
 
-```js
-captureSession.stop().then(() => {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function stopCaptureSession(captureSession: camera.CaptureSession): void {
+  captureSession.stop().then(() => {
     console.log('Promise returned to indicate the session stop success.');
-}).catch((err) => {
+  }).catch((err: BusinessError) => {
     console.error(`Failed to stop the session ${err.code}`);
-});
+  });
+}
 ```
 
 ### release
@@ -1767,14 +1978,18 @@ release\(callback: AsyncCallback\<void\>\): void
 
 **示例：**
 
-```js
-captureSession.release((err) => {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function releaseCaptureSession(captureSession: camera.CaptureSession): void {
+  captureSession.release((err: BusinessError) => {
     if (err) {
-        console.error(`Failed to release the CaptureSession instance ${err.code}`);
-        return;
+      console.error(`Failed to release the CaptureSession instance ${err.code}`);
+      return;
     }
     console.log('Callback invoked to indicate that the CaptureSession instance is released successfully.');
-});
+  });
+}
 ```
 
 ### release
@@ -1801,12 +2016,16 @@ release(): Promise\<void\>
 
 **示例：**
 
-```js
-captureSession.release().then(() => {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function releaseCaptureSession(captureSession: camera.CaptureSession): void {
+  captureSession.release().then(() => {
     console.log('Promise returned to indicate that the CaptureSession instance is released successfully.');
-}).catch((err) => {
+  }).catch((err: BusinessError) => {
     console.error(`Failed to release the CaptureSession instance ${err.code}`);
-});
+  });
+}
 ```
 
 ### hasFlash
@@ -1833,12 +2052,19 @@ hasFlash(): boolean
 
 **示例：**
 
-```js
-try {
-    let status = captureSession.hasFlash();
-} catch (error) {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function hasFlash(captureSession: camera.CaptureSession): boolean {
+  let status: boolean = false;
+  try {
+    status = captureSession.hasFlash();
+  } catch (error) {
     // 失败返回错误码error.code并处理
-    console.log(error.code);
+    let err = error as BusinessError;
+    console.error(`The hasFlash call failed. error code: ${err.code}`);
+  }
+  return status;
 }
 ```
 
@@ -1872,12 +2098,19 @@ isFlashModeSupported(flashMode: FlashMode): boolean
 
 **示例：**
 
-```js
-try {
-    let status = captureSession.isFlashModeSupported(camera.FlashMode.FLASH_MODE_AUTO);
-} catch (error) {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function isFlashModeSupported(captureSession: camera.CaptureSession): boolean {
+  let status: boolean = false;
+  try {
+    status = captureSession.isFlashModeSupported(camera.FlashMode.FLASH_MODE_AUTO);
+  } catch (error) {
     // 失败返回错误码error.code并处理
-    console.log(error.code);
+    let err = error as BusinessError;
+    console.error(`The isFlashModeSupported call failed. error code: ${err.code}`);
+  }
+  return status;
 }
 ```
 
@@ -1916,12 +2149,17 @@ setFlashMode(flashMode: FlashMode): void
 
 **示例：**
 
-```js
-try {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function setFlashMode(captureSession: camera.CaptureSession): void {
+  try {
     captureSession.setFlashMode(camera.FlashMode.FLASH_MODE_AUTO);
-} catch (error) {
+  } catch (error) {
     // 失败返回错误码error.code并处理
-    console.log(error.code);
+    let err = error as BusinessError;
+    console.error(`The setFlashMode call failed. error code: ${err.code}`);
+  }
 }
 ```
 
@@ -1949,12 +2187,19 @@ getFlashMode(): FlashMode
 
 **示例：**
 
-```js
-try {
-    let flashMode = captureSession.getFlashMode();
-} catch (error) {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function getFlashMode(captureSession: camera.CaptureSession): camera.FlashMode {
+  let flashMode: camera.FlashMode;
+  try {
+    flashMode = captureSession.getFlashMode();
+  } catch (error) {
     // 失败返回错误码error.code并处理
-    console.log(error.code);
+    let err = error as BusinessError;
+    console.error(`The getFlashMode call failed.error code: ${err.code}`);
+  }
+  return flashMode;
 }
 ```
 
@@ -1988,12 +2233,19 @@ isExposureModeSupported(aeMode: ExposureMode): boolean;
 
 **示例：**
 
-```js
-try {
-    let isSupported = captureSession.isExposureModeSupported(camera.ExposureMode.EXPOSURE_MODE_LOCKED);
-} catch (error) {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function isExposureModeSupported(captureSession: camera.CaptureSession): boolean {
+  let isSupported: boolean;
+  try {
+    isSupported = captureSession.isExposureModeSupported(camera.ExposureMode.EXPOSURE_MODE_LOCKED);
+  } catch (error) {
     // 失败返回错误码error.code并处理
-    console.log(error.code);
+    let err = error as BusinessError;
+    console.error(`The isExposureModeSupported call failed. error code: ${err.code}`);
+  }
+  return isSupported;
 }
 ```
 
@@ -2021,12 +2273,19 @@ getExposureMode(): ExposureMode
 
 **示例：**
 
-```js
-try {
-    let exposureMode = captureSession.getExposureMode();
-} catch (error) {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function getExposureMode(captureSession: camera.CaptureSession): camera.ExposureMode {
+  let exposureMode: camera.ExposureMode;
+  try {
+    exposureMode = captureSession.getExposureMode();
+  } catch (error) {
     // 失败返回错误码error.code并处理
-    console.log(error.code);
+    let err = error as BusinessError;
+    console.error(`The getExposureMode call failed. error code: ${err.code}`);
+  }
+  return exposureMode;
 }
 ```
 
@@ -2060,12 +2319,17 @@ setExposureMode(aeMode: ExposureMode): void
 
 **示例：**
 
-```js
-try {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function setExposureMode(captureSession: camera.CaptureSession): void {
+  try {
     captureSession.setExposureMode(camera.ExposureMode.EXPOSURE_MODE_LOCKED);
-} catch (error) {
+  } catch (error) {
     // 失败返回错误码error.code并处理
-    console.log(error.code);
+    let err = error as BusinessError;
+    console.error(`The setExposureMode call failed. error code: ${err.code}`);
+  }
 }
 ```
 
@@ -2093,12 +2357,19 @@ getMeteringPoint(): Point
 
 **示例：**
 
-```js
-try {
-    let exposurePoint = captureSession.getMeteringPoint();
-} catch (error) {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function getMeteringPoint(captureSession: camera.CaptureSession): camera.Point {
+  let exposurePoint: camera.Point;
+  try {
+    exposurePoint = captureSession.getMeteringPoint();
+  } catch (error) {
     // 失败返回错误码error.code并处理
-    console.log(error.code);
+    let err = error as BusinessError;
+    console.error(`The getMeteringPoint call failed. error code: ${err.code}`);
+  }
+  return exposurePoint;
 }
 ```
 
@@ -2135,13 +2406,18 @@ setMeteringPoint(point: Point): void
 
 **示例：**
 
-```js
-const exposurePoint = {x: 1, y: 1};
-try {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function setMeteringPoint(captureSession: camera.CaptureSession): void {
+  const exposurePoint: camera.Point = {x: 1, y: 1};
+  try {
     captureSession.setMeteringPoint(exposurePoint);
-} catch (error) {
+  } catch (error) {
     // 失败返回错误码error.code并处理
-    console.log(error.code);
+    let err = error as BusinessError;
+    console.error(`The setMeteringPoint call failed. error code: ${err.code}`);
+  }
 }
 ```
 
@@ -2169,12 +2445,19 @@ getExposureBiasRange(): Array\<number\>
 
 **示例：**
 
-```js
-try {
-    let biasRangeArray = captureSession.getExposureBiasRange();
-} catch (error) {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function getExposureBiasRange(captureSession: camera.CaptureSession): Array<number> {
+  let biasRangeArray: Array<number>;
+  try {
+    biasRangeArray = captureSession.getExposureBiasRange();
+  } catch (error) {
     // 失败返回错误码error.code并处理
-    console.log(error.code);
+    let err = error as BusinessError;
+    console.error(`The getExposureBiasRange call failed. error code: ${err.code}`);
+  }
+  return biasRangeArray;
 }
 ```
 
@@ -2204,13 +2487,18 @@ setExposureBias(exposureBias: number): void
 
 **示例：**
 
-```js
-let exposureBias = biasRangeArray[0];
-try {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function setExposureBias(captureSession: camera.CaptureSession, biasRangeArray: Array<number>): void {
+  let exposureBias = biasRangeArray[0];
+  try {
     captureSession.setExposureBias(exposureBias);
-} catch (error) {
+  } catch (error) {
     // 失败返回错误码error.code并处理
-    console.log(error.code);
+    let err = error as BusinessError;
+    console.error(`The setExposureBias call failed. error code: ${err.code}`);
+  }
 }
 ```
 
@@ -2238,12 +2526,19 @@ getExposureValue(): number
 
 **示例：**
 
-```js
-try {
-    let exposureValue = captureSession.getExposureValue();
-} catch (error) {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function getExposureValue(captureSession: camera.CaptureSession): number {
+  let exposureValue: number;
+  try {
+    exposureValue = captureSession.getExposureValue();
+  } catch (error) {
     // 失败返回错误码error.code并处理
-    console.log(error.code);
+    let err = error as BusinessError;
+    console.error(`The getExposureValue call failed. error code: ${err.code}`);
+  }
+  return exposureValue;
 }
 ```
 
@@ -2277,12 +2572,19 @@ isFocusModeSupported(afMode: FocusMode): boolean
 
 **示例：**
 
-```js
-try {
-    let status = captureSession.isFocusModeSupported(camera.FocusMode.FOCUS_MODE_AUTO);
-} catch (error) {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function isFocusModeSupported(captureSession: camera.CaptureSession): boolean {
+  let status: boolean = false;
+  try {
+    status = captureSession.isFocusModeSupported(camera.FocusMode.FOCUS_MODE_AUTO);
+  } catch (error) {
     // 失败返回错误码error.code并处理
-    console.log(error.code);
+    let err = error as BusinessError;
+    console.error(`The isFocusModeSupported call failed. error code: ${err.code}`);
+  }
+  return status;
 }
 ```
 
@@ -2318,12 +2620,17 @@ setFocusMode(afMode: FocusMode): void
 
 **示例：**
 
-```js
-try {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function setFocusMode(captureSession: camera.CaptureSession): void {
+  try {
     captureSession.setFocusMode(camera.FocusMode.FOCUS_MODE_AUTO);
-} catch (error) {
+  } catch (error) {
     // 失败返回错误码error.code并处理
-    console.log(error.code);
+    let err = error as BusinessError;
+    console.error(`The setFocusMode call failed. error code: ${err.code}`);
+  }
 }
 ```
 
@@ -2351,12 +2658,19 @@ getFocusMode(): FocusMode
 
 **示例：**
 
-```js
-try {
-    let afMode = captureSession.getFocusMode();
-} catch (error) {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function getFocusMode(captureSession: camera.CaptureSession): camera.FocusMode {
+  let afMode: camera.FocusMode;
+  try {
+    afMode = captureSession.getFocusMode();
+  } catch (error) {
     // 失败返回错误码error.code并处理
-    console.log(error.code);
+    let err = error as BusinessError;
+    console.error(`The getFocusMode call failed. error code: ${err.code}`);
+  }
+  return afMode;
 }
 ```
 
@@ -2393,13 +2707,18 @@ setFocusPoint(point: Point): void
 
 **示例：**
 
-```js
-const Point1 = {x: 1, y: 1};
-try {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function setFocusPoint(captureSession: camera.CaptureSession): void {
+  const Point1: camera.Point = {x: 1, y: 1};
+  try {
     captureSession.setFocusPoint(Point1);
-} catch (error) {
+  } catch (error) {
     // 失败返回错误码error.code并处理
-    console.log(error.code);
+    let err = error as BusinessError;
+    console.error(`The setFocusPoint call failed. error code: ${err.code}`);
+  }
 }
 ```
 
@@ -2427,12 +2746,19 @@ getFocusPoint(): Point
 
 **示例：**
 
-```js
-try {
-    let point = captureSession.getFocusPoint();
-} catch (error) {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function getFocusPoint(captureSession: camera.CaptureSession): camera.Point {
+  let point: camera.Point;
+  try {
+    point = captureSession.getFocusPoint();
+  } catch (error) {
     // 失败返回错误码error.code并处理
-    console.log(error.code);
+    let err = error as BusinessError;
+    console.error(`The getFocusPoint call failed. error code: ${err.code}`);
+  }
+  return point;
 }
 ```
 
@@ -2460,12 +2786,19 @@ getFocalLength(): number
 
 **示例：**
 
-```js
-try {
-    let focalLength = captureSession.getFocalLength();
-} catch (error) {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function getFocalLength(captureSession: camera.CaptureSession): number {
+  let focalLength: number;
+  try {
+    focalLength = captureSession.getFocalLength();
+  } catch (error) {
     // 失败返回错误码error.code并处理
-    console.log(error.code);
+    let err = error as BusinessError;
+    console.error(`The getFocalLength call failed. error code: ${err.code}`);
+  }
+  return focalLength;
 }
 ```
 
@@ -2493,12 +2826,19 @@ getZoomRatioRange(): Array\<number\>
 
 **示例：**
 
-```js
-try {
-    let zoomRatioRange = captureSession.getZoomRatioRange();
-} catch (error) {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function getZoomRatioRange(captureSession: camera.CaptureSession): Array<number> {
+  let zoomRatioRange: Array<number>;
+  try {
+    zoomRatioRange = captureSession.getZoomRatioRange();
+  } catch (error) {
     // 失败返回错误码error.code并处理
-    console.log(error.code);
+    let err = error as BusinessError;
+    console.error(`The getZoomRatioRange call failed. error code: ${err.code}`);
+  }
+  return zoomRatioRange;
 }
 ```
 
@@ -2532,13 +2872,21 @@ setZoomRatio(zoomRatio: number): void
 
 **示例：**
 
-```js
-let zoomRatio = zoomRatioRange[0];
-try {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function setZoomRatio(captureSession: camera.CaptureSession, zoomRatioRange: Array<number>): void {
+  if (zoomRatioRange === undefined || zoomRatioRange.length <= 0) {
+    return;
+  }
+  let zoomRatio = zoomRatioRange[0];
+  try {
     captureSession.setZoomRatio(zoomRatio);
-} catch (error) {
+  } catch (error) {
     // 失败返回错误码error.code并处理
-    console.log(error.code);
+    let err = error as BusinessError;
+    console.error(`The setZoomRatio call failed. error code: ${err.code}`);
+  }
 }
 ```
 
@@ -2566,12 +2914,19 @@ getZoomRatio(): number
 
 **示例：**
 
-```js
-try {
-    let zoomRatio = captureSession.getZoomRatio();
-} catch (error) {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function getZoomRatio(captureSession: camera.CaptureSession): number {
+  let zoomRatio: number;
+  try {
+    zoomRatio = captureSession.getZoomRatio();
+  } catch (error) {
     // 失败返回错误码error.code并处理
-    console.log(error.code);
+    let err = error as BusinessError;
+    console.error(`The getZoomRatio call failed. error code: ${err.code}`);
+  }
+  return zoomRatio;
 }
 ```
 
@@ -2605,12 +2960,19 @@ isVideoStabilizationModeSupported(vsMode: VideoStabilizationMode): boolean
 
 **示例：**
 
-```js
-try {
-    let isSupported = captureSession.isVideoStabilizationModeSupported(camera.VideoStabilizationMode.OFF);
-} catch (error) {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function isVideoStabilizationModeSupported(captureSession: camera.CaptureSession): boolean {
+  let isSupported: boolean = false;
+  try {
+    isSupported = captureSession.isVideoStabilizationModeSupported(camera.VideoStabilizationMode.OFF);
+  } catch (error) {
     // 失败返回错误码error.code并处理
-    console.log(error.code);
+    let err = error as BusinessError;
+    console.error(`The isVideoStabilizationModeSupported call failed. error code: ${err.code}`);
+  }
+  return isSupported;
 }
 ```
 
@@ -2638,12 +3000,19 @@ getActiveVideoStabilizationMode(): VideoStabilizationMode
 
 **示例：**
 
-```js
-try {
-    let vsMode = captureSession.getActiveVideoStabilizationMode();
-} catch (error) {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function getActiveVideoStabilizationMode(captureSession: camera.CaptureSession): camera.VideoStabilizationMode {
+  let vsMode: camera.VideoStabilizationMode;
+  try {
+    vsMode = captureSession.getActiveVideoStabilizationMode();
+  } catch (error) {
     // 失败返回错误码error.code并处理
-    console.log(error.code);
+    let err = error as BusinessError;
+    console.error(`The getActiveVideoStabilizationMode call failed. error code: ${err.code}`);
+  }
+  return vsMode;
 }
 ```
 
@@ -2677,12 +3046,17 @@ setVideoStabilizationMode(mode: VideoStabilizationMode): void
 
 **示例：**
 
-```js
-try {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function setVideoStabilizationMode(captureSession: camera.CaptureSession): void {
+  try {
     captureSession.setVideoStabilizationMode(camera.VideoStabilizationMode.OFF);
-} catch (error) {
+  } catch (error) {
     // 失败返回错误码error.code并处理
-    console.log(error.code);
+    let err = error as BusinessError;
+    console.error(`The setVideoStabilizationMode call failed. error code: ${err.code}`);
+  }
 }
 ```
 ### getSupportedFilters
@@ -2711,8 +3085,11 @@ getSupportedFilters(): Array\<number>
 
 **示例：**
 
-```js
-let FilterTypes = captureSession.getSupportedFilters();
+```ts
+function getSupportedFilters(captureSession: camera.CaptureSession): Array<camera.FilterType> {
+  let filterTypes: Array<camera.FilterType> = captureSession.getSupportedFilters();
+  return filterTypes;
+}
 ```
 ### setFilter
 
@@ -2741,10 +3118,12 @@ setFilter(filter: number): void
 
 **示例：**
 
-```js
-let FilterTypes = captureSession.getSupportedFilters();
-if (!FilterTypes.empty()) {
-    captureSession.setFilter(FilterTypes[0]);
+```ts
+function setFilter(captureSession: camera.CaptureSession, filterTypes: Array<camera.FilterType>): void {
+  if (filterTypes === undefined || filterTypes.length <= 0) {
+    return;
+  }
+  captureSession.setFilter(filterTypes[0]);
 }
 ```
 
@@ -2774,8 +3153,11 @@ if (!FilterTypes.empty()) {
 
 **示例：**
 
-```js
-let FilterType = captureSession.getFilter();
+```ts
+function getFilter(captureSession: camera.CaptureSession): number {
+  let filterType: number = captureSession.getFilter();
+  return filterType;
+}
 ```
 ### getSupportedBeautyTypes
 
@@ -2803,8 +3185,11 @@ getSupportedBeautyTypes(): Array<[BeautyType](#beautytype)>
 
 **示例：**
 
-```js
-let FilterTypes = captureSession.getSupportedBeautyTypes();
+```ts
+function getSupportedBeautyTypes(captureSession: camera.CaptureSession): Array<camera.BeautyType> {
+  let beautyTypes: Array<camera.BeautyType> = captureSession.getSupportedBeautyTypes();
+  return beautyTypes;
+}
 ```
 ### getSupportedBeautyRange
 
@@ -2838,10 +3223,14 @@ getSupportedBeautyRange(type: BeautyType): Array\<number\>
 
 **示例：**
 
-```js
-let beautyTypes = captureSession.getSupportedBeautyTypes();
-if (!beautyTypes.empty()) {
-    let nums = captureSession.getSupportedBeautyRange(beautyTypes[0]);
+```ts
+function getSupportedBeautyRange(captureSession: camera.CaptureSession): Array<number> {
+  let beautyTypes: Array<camera.BeautyType> = captureSession.getSupportedBeautyTypes();
+  if (beautyTypes === undefined || beautyTypes.length <= 0) {
+    return null;
+  }
+  let beautyLevels: Array<number> = captureSession.getSupportedBeautyRange(beautyTypes[0]);
+  return beautyLevels;
 }
 ```
 
@@ -2872,14 +3261,17 @@ setBeauty(type: BeautyType, value: number): void
 
 **示例：**
 
-```js
-let beautyTypes = captureSession.getSupportedBeautyTypes();
-let beautyLevels;
-if (!beautyTypes.empty()) {
-    beautyLevels = captureSession.getSupportedBeautyRange(beautyTypes[0]);
-}
-if (!beautyTypes.empty() && beautyLevels.empty()) {
-    captureSession.setBeauty(beautyTypes[0], beautyLevels[0]);
+```ts
+function setBeauty(captureSession: camera.CaptureSession): void {
+  let beautyTypes: Array<camera.BeautyType> = captureSession.getSupportedBeautyTypes();
+  if (beautyTypes === undefined || beautyTypes.length <= 0) {
+    return null;
+  }
+  let beautyLevels: Array<number> = captureSession.getSupportedBeautyRange(beautyTypes[0]);
+  if (beautyLevels === undefined || beautyLevels.length <= 0) {
+    return null;
+  }
+  captureSession.setBeauty(beautyTypes[0], beautyLevels[0]);
 }
 ```
 
@@ -2914,16 +3306,20 @@ getBeauty(type: BeautyType): number
 
 **示例：**
 
-```js
-let BeautyTypes = captureSession.getSupportedBeautyTypes();
-let beautyLevels;
-if (!BeautyTypes.empty()) {
-    beautyLevels = captureSession.getSupportedBeautyRange(BeautyTypes[0]);
-}
-if (!BeautyTypes.empty() && beautyLevels.empty()) {
-    captureSession.setBeauty(BeautyTypes[0], beautyLevels[0]);
+```ts
+function getBeauty(captureSession: camera.CaptureSession): number {
+  let beautyTypes = captureSession.getSupportedBeautyTypes();
+  if (beautyTypes === undefined || beautyTypes.length <= 0) {
+    return null;
+  }
+  let beautyLevels: Array<number> = captureSession.getSupportedBeautyRange(BeautyTypes[0]);
+  if (beautyLevels === undefined || beautyLevels.length <= 0) {
+    return null;
+  }
+  captureSession.setBeauty(beautyTypes[0], beautyLevels[0]);
+  let beautyLevel: number = captureSession.getBeauty(beautyTypes[0]);
+  return beautyLevel;
 }
-let beautyLevel = captureSession.getBeauty(BeautyTypes[0]);
 ```
 
 ### on('focusStateChange')
@@ -2943,10 +3339,14 @@ on(type: 'focusStateChange', callback: AsyncCallback\<FocusState\>): void
 
 **示例：**
 
-```js
-captureSession.on('focusStateChange', (err, focusState) => {
-    console.log(`Focus state  : ${focusState}`);
-})
+```ts
+import { BusinessError } from '@ohos.base';
+
+function registerFocusStateChange(captureSession: camera.CaptureSession): void {
+  captureSession.on('focusStateChange', (err: BusinessError, focusState: camera.FocusState) => {
+    console.log(`Focus state: ${focusState}`);
+  });
+}
 ```
 
 ### off('focusStateChange')
@@ -2966,8 +3366,10 @@ off(type: 'focusStateChange', callback?: AsyncCallback\<FocusState\>): void
 
 **示例：**
 
-```js
-captureSession.off('focusStateChange')
+```ts
+function unregisterFocusStateChange(captureSession: camera.CaptureSession): void {
+  captureSession.off('focusStateChange');
+}
 ```
 
 ### on('error')
@@ -2987,10 +3389,14 @@ on(type: 'error', callback: ErrorCallback): void
 
 **示例：**
 
-```js
-captureSession.on('error', (error) => {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function registerCaptureSessionError(captureSession: camera.CaptureSession): void {
+  captureSession.on('error', (error: BusinessError) => {
     console.log(`Capture session error code: ${error.code}`);
-})
+  });
+}
 ```
 
 ### off('error')
@@ -3010,8 +3416,10 @@ off(type: 'error', callback?: ErrorCallback): void
 
 **示例：**
 
-```js
-captureSession.off('error')
+```ts
+function unregisterCaptureSessionError(captureSession: camera.CaptureSession): void {
+  captureSession.off('error');
+}
 ```
 ## PortraitSession
 
@@ -3043,8 +3451,11 @@ getSupportedPortraitEffects(): Array<[PortraitEffect](#portraiteffect)>
 
 **示例：**
 
-```js
-let portraitEffect = PortraitSession.getSupportedPortraitEffects();
+```ts
+function getSupportedPortraitEffects(portraitSession: camera.PortraitSession): Array<camera.PortraitEffect> {
+  let portraitEffect: Array<camera.PortraitEffect> = portraitSession.getSupportedPortraitEffects();
+  return portraitEffect;
+}
 ```
 ### setPortraitEffect
 
@@ -3072,10 +3483,19 @@ setPortraitEffect(effect: PortraitEffect): void
 
 **示例：**
 
-```js
-let portraitEffects = PortraitSession.getSupportedPortraitEffects();
-if (!portraitEffects.empty()) {
-    PortraitSession.setPortraitEffect(portraitEffects[0]);
+```ts
+import { BusinessError } from '@ohos.base';
+
+function setPortraitEffect(portraitSession: camera.PortraitSession, portraitEffects: Array<camera.PortraitEffect>): void {
+  if (portraitEffects === undefined || portraitEffects.length <= 0) {
+    return;
+  }
+  try {
+    portraitSession.setPortraitEffect(portraitEffects[0]);
+  } catch (error) {
+    let err = error as BusinessError;
+    console.error(`The setPortraitEffect call failed. error code: ${err.code}`);
+  }
 }
 ```
 ### getPortraitEffect
@@ -3104,10 +3524,10 @@ getPortraitEffect(): PortraitEffect
 
 **示例：**
 
-```js
-let portraitEffects = PortraitSession.getSupportedPortraitEffects();
-if (!portraitEffects.empty()) {
-    PortraitSession.setPortraitEffect(portraitEffects[0]);
+```ts
+function getSupportedPortraitEffects(portraitSession: camera.PortraitSession): Array<camera.PortraitEffect> {
+  let portraitEffects: Array<camera.PortraitEffect> = portraitSession.getSupportedPortraitEffects();
+  return portraitEffects;
 }
 ```
 
@@ -3143,14 +3563,18 @@ start(callback: AsyncCallback\<void\>): void
 
 **示例：**
 
-```js
-previewOutput.start((err) => {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function startPreviewOutput(previewOutput: camera.PreviewOutput): void {
+  previewOutput.start((err: BusinessError) => {
     if (err) {
-        console.error(`Failed to start the previewOutput. ${err.code}`);
-        return;
+      console.error(`Failed to start the previewOutput. ${err.code}`);
+      return;
     }
     console.log('Callback returned with previewOutput started.');
-})
+  });
+}
 ```
 
 ### start
@@ -3177,12 +3601,16 @@ start(): Promise\<void\>
 
 **示例：**
 
-```js
-previewOutput.start().then(() => {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function startPreviewOutput(previewOutput: camera.PreviewOutput): void {
+  previewOutput.start().then(() => {
     console.log('Promise returned with previewOutput started.');
-}).catch((err) => {
+  }).catch((err: BusinessError) => {
     console.log('Failed to previewOutput start '+ err.code);
-});
+  });
+}
 ```
 
 ### stop
@@ -3201,14 +3629,18 @@ stop(callback: AsyncCallback\<void\>): void
 
 **示例：**
 
-```js
-previewOutput.stop((err) => {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function stopPreviewOutput(previewOutput: camera.PreviewOutput): void {
+  previewOutput.stop((err: BusinessError) => {
     if (err) {
-        console.error(`Failed to stop the previewOutput. ${err.code}`);
-        return;
+      console.error(`Failed to stop the previewOutput. ${err.code}`);
+      return;
     }
     console.log('Callback returned with previewOutput stopped.');
-})
+  })
+}
 ```
 
 ### stop
@@ -3227,12 +3659,16 @@ stop(): Promise\<void\>
 
 **示例：**
 
-```js
-previewOutput.stop().then(() => {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function stopPreviewOutput(previewOutput: camera.PreviewOutput): void {
+  previewOutput.stop().then(() => {
     console.log('Callback returned with previewOutput stopped.');
-}).catch((err) => {
+  }).catch((err: BusinessError) => {
     console.log('Failed to previewOutput stop '+ err.code);
-});
+  });
+}
 ```
 
 ### release
@@ -3259,14 +3695,18 @@ release(callback: AsyncCallback\<void\>): void
 
 **示例：**
 
-```js
-previewOutput.release((err) => {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function releasePreviewOutput(previewOutput: camera.PreviewOutput): void {
+  previewOutput.release((err: BusinessError) => {
     if (err) {
-        console.error(`Failed to release the PreviewOutput instance ${err.code}`);
-        return;
+      console.error(`Failed to release the PreviewOutput instance ${err.code}`);
+      return;
     }
     console.log('Callback invoked to indicate that the PreviewOutput instance is released successfully.');
-});
+  });
+}
 ```
 
 ### release
@@ -3293,12 +3733,16 @@ release(): Promise\<void\>
 
 **示例：**
 
-```js
-previewOutput.release().then(() => {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function releasePreviewOutput(previewOutput: camera.PreviewOutput): void {
+  previewOutput.release().then(() => {
     console.log('Promise returned to indicate that the PreviewOutput instance is released successfully.');
-}).catch((err) => {
+  }).catch((err: BusinessError) => {
     console.log('Failed to previewOutput release '+ err.code);
-});
+  });
+}
 ```
 
 ### on('frameStart')
@@ -3318,10 +3762,12 @@ on(type: 'frameStart', callback: AsyncCallback\<void\>): void
 
 **示例：**
 
-```js
-previewOutput.on('frameStart', () => {
+```ts
+function registerPreviewOutputFrameStart(previewOutput: camera.PreviewOutput): void {
+  previewOutput.on('frameStart', () => {
     console.log('Preview frame started');
-})
+  });
+}
 ```
 
 ### off('frameStart')
@@ -3341,8 +3787,10 @@ off(type: 'frameStart', callback?: AsyncCallback\<void\>): void
 
 **示例：**
 
-```js
-previewOutput.off('frameStart')
+```ts
+function unregisterPreviewOutputFrameStart(previewOutput: camera.PreviewOutput): void {
+  previewOutput.off('frameStart');
+}
 ```
 
 ### on('frameEnd')
@@ -3362,10 +3810,12 @@ on(type: 'frameEnd', callback: AsyncCallback\<void\>): void
 
 **示例：**
 
-```js
-previewOutput.on('frameEnd', () => {
+```ts
+function registerPreviewOutputFrameEnd(previewOutput: camera.PreviewOutput): void {
+  previewOutput.on('frameEnd', () => {
     console.log('Preview frame ended');
-})
+  });
+}
 ```
 
 ### off('frameEnd')
@@ -3385,8 +3835,10 @@ off(type: 'frameEnd', callback?: AsyncCallback\<void\>): void
 
 **示例：**
 
-```js
-previewOutput.off('frameEnd')
+```ts
+function unregisterPreviewOutputFrameEnd(previewOutput: camera.PreviewOutput): void {
+  previewOutput.off('frameEnd');
+}
 ```
 
 ### on('error')
@@ -3406,10 +3858,14 @@ on(type: 'error', callback: ErrorCallback): void
 
 **示例：**
 
-```js
-previewOutput.on('error', (previewOutputError) => {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function registerPreviewOutputError(previewOutput: camera.PreviewOutput): void {
+  previewOutput.on('error', (previewOutputError: BusinessError) => {
     console.log(`Preview output error code: ${previewOutputError.code}`);
-})
+  })
+}
 ```
 
 ### off('error')
@@ -3429,8 +3885,10 @@ off(type: 'error', callback?: ErrorCallback): void
 
 **示例：**
 
-```js
-previewOutput.off('error')
+```ts
+function unregisterPreviewOutputError(previewOutput: camera.PreviewOutput): void {
+  previewOutput.off('error');
+}
 ```
 
 ### addDeferredSurface
@@ -3459,17 +3917,19 @@ addDeferredSurface(surfaceId: string): void
 
 **示例：**
 
-```js
-function async preview(context: Context, cameraInfo: camera.Device, previewProfile: camera.Profile, photoProfile: camera.Profile, surfaceId: string): Promise<void> {
+```ts
+import featureAbility from '@ohos.ability.featureAbility';
+
+async function preview(context: featureAbility.Context, cameraInfo: camera.CameraDevice, previewProfile: camera.Profile, photoProfile: camera.Profile, surfaceId: string): Promise<void> {
   const cameraManager: camera.CameraManager = camera.getCameraManager(context);
-  const cameraInput camera.CameraInput = await cameraManager.createCameraInput(cameraInfo)
+  const cameraInput: camera.CameraInput = cameraManager.createCameraInput(cameraInfo)
   const previewOutput: camera.PreviewOutput = await cameraManager.createDeferredPreviewOutput(previewProfile);
-  const photoOutput: camera.PhotoOutput = await cameraManager.createPhotoOutput(photoProfile);
+  const photoOutput: camera.PhotoOutput = cameraManager.createPhotoOutput(photoProfile);
   const session: camera.CaptureSession  = await this.mCameraManager.createCaptureSession();
-  await session.beginConfig();
-  await session.addInput(cameraInput);
-  await session.addOutput(previewOutput);
-  await session.addOutput(photoOutput);
+  session.beginConfig();
+  session.addInput(cameraInput);
+  session.addOutput(previewOutput);
+  session.addOutput(photoOutput);
   await session.commitConfig();
   await session.start();
   await previewOutput.addDeferredSurface(surfaceId);
@@ -3556,14 +4016,18 @@ capture(callback: AsyncCallback\<void\>): void
 
 **示例：**
 
-```js
-photoOutput.capture((err) => {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function capture(photoOutput: camera.PhotoOutput): void {
+  photoOutput.capture((err: BusinessError) => {
     if (err) {
-        console.error(`Failed to capture the photo ${err.code}`);
-        return;
+      console.error(`Failed to capture the photo ${err.code}`);
+      return;
     }
     console.log('Callback invoked to indicate the photo capture request success.');
-});
+  });
+}
 ```
 
 ### capture
@@ -3591,12 +4055,16 @@ capture(): Promise\<void\>
 
 **示例：**
 
-```js
-photoOutput.capture().then(() => {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function capture(photoOutput: camera.PhotoOutput): void {
+  photoOutput.capture().then(() => {
     console.log('Promise returned to indicate that photo capture request success.');
-}).catch((err) => {
+  }).catch((err: BusinessError) => {
     console.log('Failed to photoOutput capture '+ err.code);
-});
+  });
+}
 ```
 
 ### capture
@@ -3626,25 +4094,29 @@ capture(setting: PhotoCaptureSetting, callback: AsyncCallback\<void\>): void
 
 **示例：**
 
-```js
-let captureLocation = {
-  latitude: 0,
-  longitude: 0,
-  altitude: 0,
-}
-let settings = {
-  quality: camera.QualityLevel.QUALITY_LEVEL_LOW,
-  rotation: camera.ImageRotation.ROTATION_0,
-  location: captureLocation,
-  mirror: false
-}
-photoOutput.capture(settings, (err) => {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function capture(photoOutput: camera.PhotoOutput): void {
+  let captureLocation: camera.Location = {
+    latitude: 0,
+    longitude: 0,
+    altitude: 0,
+  }
+  let settings: camera.PhotoCaptureSetting = {
+    quality: camera.QualityLevel.QUALITY_LEVEL_LOW,
+    rotation: camera.ImageRotation.ROTATION_0,
+    location: captureLocation,
+    mirror: false
+  }
+  photoOutput.capture(settings, (err: BusinessError) => {
     if (err) {
-        console.error(`Failed to capture the photo ${err.code}`);
-        return;
+      console.error(`Failed to capture the photo ${err.code}`);
+      return;
     }
     console.log('Callback invoked to indicate the photo capture request success.');
-});
+  });
+}
 ```
 
 ### capture
@@ -3679,23 +4151,27 @@ capture(setting?: PhotoCaptureSetting): Promise\<void\>
 
 **示例：**
 
-```js
-let captureLocation = {
-  latitude: 0,
-  longitude: 0,
-  altitude: 0,
-}
-let settings = {
-  quality: camera.QualityLevel.QUALITY_LEVEL_LOW,
-  rotation: camera.ImageRotation.ROTATION_0,
-  location: captureLocation,
-  mirror: false
-}
-photoOutput.capture(settings).then(() => {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function capture(photoOutput: camera.PhotoOutput): void {
+  let captureLocation: camera.Location = {
+    latitude: 0,
+    longitude: 0,
+    altitude: 0,
+  }
+  let settings: camera.PhotoCaptureSetting = {
+    quality: camera.QualityLevel.QUALITY_LEVEL_LOW,
+    rotation: camera.ImageRotation.ROTATION_0,
+    location: captureLocation,
+    mirror: false
+  }
+  photoOutput.capture(settings).then(() => {
     console.log('Promise returned to indicate that photo capture request success.');
-}).catch((err) => {
+  }).catch((err: BusinessError) => {
     console.log('Failed to photoOutput capture '+ err.code);
-});
+  });
+}
 ```
 
 ### isMirrorSupported
@@ -3714,8 +4190,11 @@ isMirrorSupported(): boolean
 
 **示例：**
 
-```js
-let isSupported = photoOutput.isMirrorSupported();
+```ts
+function isMirrorSupported(photoOutput: camera.PhotoOutput): boolean {
+  let isSupported: boolean = photoOutput.isMirrorSupported();
+  return isSupported;
+}
 ```
 
 ### release
@@ -3742,14 +4221,18 @@ release(callback: AsyncCallback\<void\>): void
 
 **示例：**
 
-```js
-photoOutput.release((err) => {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function releasePhotoOutput(photoOutput: camera.PhotoOutput): void {
+  photoOutput.release((err: BusinessError) => {
     if (err) {
-        console.error(`Failed to release the PreviewOutput instance ${err.code}`);
-        return;
+      console.error(`Failed to release the PreviewOutput instance ${err.code}`);
+      return;
     }
     console.log('Callback invoked to indicate that the PreviewOutput instance is released successfully.');
-});
+  });
+}
 ```
 
 ### release
@@ -3776,12 +4259,16 @@ release(): Promise\<void\>
 
 **示例：**
 
-```js
-photoOutput.release().then(() => {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function releasePhotoOutput(photoOutput: camera.PhotoOutput): void {
+  photoOutput.release().then(() => {
     console.log('Promise returned to indicate that the PreviewOutput instance is released successfully.');
-}).catch((err) => {
+  }).catch((err: BusinessError) => {
     console.log('Failed to photoOutput release '+ err.code);
-});
+  });
+}
 ```
 
 ### on('captureStart')
@@ -3801,10 +4288,14 @@ on(type: 'captureStart', callback: AsyncCallback\<number\>): void
 
 **示例：**
 
-```js
-photoOutput.on('captureStart', (err, captureId) => {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function registerPhotoOutputCaptureStart(photoOutput: camera.PhotoOutput): void {
+  photoOutput.on('captureStart', (err: BusinessError, captureId: number) => {
     console.log(`photo capture stated, captureId : ${captureId}`);
-})
+  });
+}
 ```
 
 ### off('captureStart')
@@ -3824,8 +4315,10 @@ off(type: 'captureStart', callback?: AsyncCallback\<number\>): void
 
 **示例：**
 
-```js
-photoOutput.off('captureStart')
+```ts
+function unregisterPhotoOutputCaptureStart(photoOutput: camera.PhotoOutput): void {
+  photoOutput.off('captureStart');
+}
 ```
 
 ### on('frameShutter')
@@ -3845,11 +4338,15 @@ on(type: 'frameShutter', callback: AsyncCallback\<FrameShutterInfo\>): void
 
 **示例：**
 
-```js
-photoOutput.on('frameShutter', (err, frameShutterInfo) => {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function registerPhotoOutputFrameShutter(photoOutput: camera.PhotoOutput): void {
+  photoOutput.on('frameShutter', (err: BusinessError, frameShutterInfo: camera.FrameShutterInfo) => {
     console.log(`photo capture end, captureId : ${frameShutterInfo.captureId}`);
     console.log(`Timestamp for frame : ${frameShutterInfo.timestamp}`);
-})
+  });
+}
 ```
 
 ### off('frameShutter')
@@ -3869,8 +4366,10 @@ off(type: 'frameShutter', callback?: AsyncCallback\<FrameShutterInfo\>): void
 
 **示例：**
 
-```js
-photoOutput.off('frameShutter')
+```ts
+function unregisterPhotoOutputFrameShutter(photoOutput: camera.PhotoOutput): void {
+  photoOutput.off('frameShutter');
+}
 ```
 
 ### on('captureEnd')
@@ -3890,11 +4389,15 @@ on(type: 'captureEnd', callback: AsyncCallback\<CaptureEndInfo\>): void
 
 **示例：**
 
-```js
-photoOutput.on('captureEnd', (err, captureEndInfo) => {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function registerPhotoOutputCaptureEnd(photoOutput: camera.PhotoOutput): void {
+  photoOutput.on('captureEnd', (err: BusinessError, captureEndInfo: camera.CaptureEndInfo) => {
     console.log(`photo capture end, captureId : ${captureEndInfo.captureId}`);
     console.log(`frameCount : ${captureEndInfo.frameCount}`);
-})
+  });
+}
 ```
 
 ### off('captureEnd')
@@ -3914,8 +4417,10 @@ off(type: 'captureEnd', callback?: AsyncCallback\<CaptureEndInfo\>): void
 
 **示例：**
 
-```js
-photoOutput.off('captureEnd')
+```ts
+function unregisterPhotoOutputCaptureEnd(photoOutput: camera.PhotoOutput): void {
+  photoOutput.off('captureEnd');
+}
 ```
 
 ### on('error')
@@ -3935,10 +4440,14 @@ on(type: 'error', callback: ErrorCallback): void
 
 **示例：**
 
-```js
-photoOutput.on('error', (error) => {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function registerPhotoOutputError(photoOutput: camera.PhotoOutput): void {
+  photoOutput.on('error', (error: BusinessError) => {
     console.log(`Photo output error code: ${error.code}`);
-})
+  });
+}
 ```
 
 ### off('error')
@@ -3958,8 +4467,10 @@ off(type: 'error', callback?: ErrorCallback): void
 
 **示例：**
 
-```js
-photoOutput.off('error')
+```ts
+function unregisterPhotoOutputError(photoOutput: camera.PhotoOutput): void {
+  photoOutput.off('error');
+}
 ```
 
 ### isQuickThumbnailSupported
@@ -3990,22 +4501,26 @@ isQuickThumbnailSupported(): boolean
 
 **示例：**
 
-```js
-this.cameraManager = camera.getCameraManager(globalThis.abilityContext);
-let cameras = this.cameraManager.getSupportedCameras()
-// 创建CaptureSession实例
-this.captureSession = await this.cameraManager.createCaptureSession()
-// 开始配置会话
-await this.captureSession.beginConfig()
-// 把CameraInput加入到会话
-this.mCameraInput = await this.cameraManager.createCameraInput(cameras[0])
-await this.cameraInput.open()
-await this.captureSession.addInput(this.cameraInput)
-// 把PhotoOutPut加入到会话
-this.photoOutPut = await this.cameraManager.createPhotoOutput(photoProfile, surfaceId)
-await this.captureSession.addOutput(this.photoOutPut)
-
-boolean isSupported = this.photoOutPut.isQuickThumbnailSupported()
+```ts
+import featureAbility from '@ohos.ability.featureAbility';
+
+async function isQuickThumbnailSupported(context: featureAbility.Context, photoProfile: camera.Profile, surfaceId: string): Promise<boolean> {
+  let cameraManager: camera.CameraManager = camera.getCameraManager(context);
+  let cameras: Array<camera.CameraDevice> = cameraManager.getSupportedCameras();
+  // 创建CaptureSession实例
+  let captureSession: camera.CaptureSession = cameraManager.createCaptureSession();
+  // 开始配置会话
+  captureSession.beginConfig();
+  // 把CameraInput加入到会话
+  let cameraInput: camera.CameraInput = cameraManager.createCameraInput(cameras[0]);
+  await cameraInput.open();
+  captureSession.addInput(cameraInput);
+  // 把photoOutput加入到会话
+  let photoOutput: camera.PhotoOutput = cameraManager.createPhotoOutput(photoProfile, surfaceId);
+  captureSession.addOutput(photoOutput);
+  let isSupported: boolean = photoOutput.isQuickThumbnailSupported();
+  return isSupported;
+}
 ```
 
 ### enableQuickThumbnail
@@ -4036,24 +4551,35 @@ enableQuickThumbnail(enabled: boolean): void
 
 **示例：**
 
-```js
-this.cameraManager = camera.getCameraManager(globalThis.abilityContext);
-let cameras = this.cameraManager.getSupportedCameras()
-// 创建CaptureSession实例
-this.captureSession = await this.cameraManager.createCaptureSession()
-// 开始配置会话
-await this.captureSession.beginConfig()
-// 把CameraInput加入到会话
-this.cameraInput = await this.cameraManager.createCameraInput(cameras[0])
-await this.cameraInput.open()
-await this.captureSession.addInput(this.cameraInput)
-// 把PhotoOutPut加入到会话
-this.photoOutPut = await this.cameraManager.createPhotoOutput(photoProfile, surfaceId)
-await this.captureSession.addOutput(this.photoOutPut)
-boolean isSupported = this.photoOutPut.isQuickThumbnailSupported()
-if (isSupported) {
-    // 使能快速缩略图
-    this.photoOutPut.enableQuickThumbnail(true)
+```ts
+import featureAbility from '@ohos.ability.featureAbility';
+import { BusinessError } from '@ohos.base';
+
+async function enableQuickThumbnail(context: featureAbility.Context, photoProfile: camera.Profile, surfaceId: string): Promise<void> {
+  let cameraManager: camera.CameraManager = camera.getCameraManager(context);
+  let cameras: Array<camera.CameraDevice> = cameraManager.getSupportedCameras();
+  // 创建CaptureSession实例
+  let captureSession: camera.CaptureSession = cameraManager.createCaptureSession();
+  // 开始配置会话
+  captureSession.beginConfig();
+  // 把CameraInput加入到会话
+  let cameraInput: camera.CameraInput = cameraManager.createCameraInput(cameras[0]);
+  await cameraInput.open();
+  captureSession.addInput(cameraInput);
+  // 把PhotoOutPut加入到会话
+  let photoOutput: camera.PhotoOutput = cameraManager.createPhotoOutput(photoProfile, surfaceId);
+  captureSession.addOutput(photoOutput);
+  let isSupported: boolean = photoOutput.isQuickThumbnailSupported();
+  if (!isSupported) {
+    console.log('Quick Thumbnail is not supported to be turned on.');
+    return;
+  }
+  try {
+    photoOutput.enableQuickThumbnail(true);
+  } catch (error) {
+    let err = error as BusinessError;
+    console.error(`The enableQuickThumbnail call failed. error code: ${err.code}`);
+  }
 }
 ```
 
@@ -4078,35 +4604,45 @@ on(type: 'quickThumbnail', callback: AsyncCallback\<image.PixelMap>): void
 
 **示例：**
 
-```js
-import camera from '@ohos.multimedia.camera'
-
-this.cameraManager = camera.getCameraManager(globalThis.abilityContext);
-let cameras = this.cameraManager.getSupportedCameras()
-// 创建CaptureSession实例
-this.captureSession = await this.cameraManager.createCaptureSession()
-// 开始配置会话
-await this.captureSession.beginConfig()
-// 把CameraInput加入到会话
-this.cameraInput = await this.cameraManager.createCameraInput(cameras[0])
-await this.cameraInput.open()
-await this.captureSession.addInput(this.cameraInput)
-// 把PhotoOutPut加入到会话
-this.photoOutPut = await this.cameraManager.createPhotoOutput(photoProfile, surfaceId)
-await this.captureSession.addOutput(this.photoOutPut)
-boolean isSupported = this.photoOutPut.isQuickThumbnailSupported()
-if (isSupported) {
-    // 使能快速缩略图
-    this.photoOutPut.enableQuickThumbnail(true)
-}
-this.photoOutPut.on('quickThumbnail', (err, pixelmap) => {
-    if (err || pixelmap === undefined) {
-        Logger.error(this.tag, 'photoOutPut on thumbnail failed ')
-        return
+```ts
+import featureAbility from '@ohos.ability.featureAbility';
+import { BusinessError } from '@ohos.base';
+
+async function registerQuickThumbnail(context: featureAbility.Context, photoProfile: camera.Profile, surfaceId: string): Promise<void> {
+  let cameraManager: camera.CameraManager = camera.getCameraManager(context);
+  let cameras: Array<camera.CameraDevice> = cameraManager.getSupportedCameras();
+  // 创建CaptureSession实例
+  let captureSession: camera.CaptureSession = cameraManager.createCaptureSession();
+  // 开始配置会话
+  captureSession.beginConfig();
+  // 把CameraInput加入到会话
+  let cameraInput: camera.CameraInput = cameraManager.createCameraInput(cameras[0]);
+  await cameraInput.open();
+  captureSession.addInput(cameraInput);
+  // 把PhotoOutPut加入到会话
+  let photoOutput: camera.PhotoOutput = cameraManager.createPhotoOutput(photoProfile, surfaceId);
+  captureSession.addOutput(photoOutput);
+  let isSupported: boolean = photoOutput.isQuickThumbnailSupported();
+  if (!isSupported) {
+    console.log('Quick Thumbnail is not supported to be turned on.');
+    return;
+  }
+  try {
+    photoOutput.enableQuickThumbnail(true);
+  } catch (error) {
+    let err = error as BusinessError;
+    console.error(`The enableQuickThumbnail call failed. error code: ${err.code}`);
+  }
+
+  photoOutput.on('quickThumbnail', (err: BusinessError, pixelMap: image.PixelMap) => {
+    if (err || pixelMap === undefined) {
+      console.error('photoOutput on thumbnail failed');
+      return;
     }
-    // 显示或保存pixelmap
-    this.showOrSavePicture(pixelmap)
-})
+    // 显示或保存pixelMap
+    // do something
+  })
+}
 ```
 
 ### off('quickThumbnail')
@@ -4128,36 +4664,10 @@ off(type: 'quickThumbnail', callback?: AsyncCallback\<image.PixelMap>): void
 
 **示例：**
 
-```js
-import camera from '@ohos.multimedia.camera'
-
-this.cameraManager = camera.getCameraManager(globalThis.abilityContext);
-let cameras = this.cameraManager.getSupportedCameras()
-// 创建CaptureSession实例
-this.captureSession = await this.cameraManager.createCaptureSession()
-// 开始配置会话
-await this.captureSession.beginConfig()
-// 把CameraInput加入到会话
-this.cameraInput = await this.cameraManager.createCameraInput(cameras[0])
-await this.cameraInput.open()
-await this.captureSession.addInput(this.cameraInput)
-// 把PhotoOutPut加入到会话
-this.photoOutPut = await this.cameraManager.createPhotoOutput(photoProfile, surfaceId)
-await this.captureSession.addOutput(this.photoOutPut)
-boolean isSupported = this.photoOutPut.isQuickThumbnailSupported()
-if (isSupported) {
-    // 使能快速缩略图
-    this.photoOutPut.enableQuickThumbnail(true)
-}
-this.photoOutPut.on('quickThumbnail', (err, pixelmap) => {
-    if (err || pixelmap === undefined) {
-        Logger.error(this.tag, 'photoOutPut on thumbnail failed ')
-        return
-    }
-    // 显示或保存pixelmap
-    this.showOrSavePicture(pixelmap)
-})
-this.photoOutPut.off('quickThumbnail')
+```ts
+function unregisterQuickThumbnail(photoOutput: camera.PhotoOutput): void {
+  this.photoOutput.off('quickThumbnail');
+}
 ```
 
 ## FrameShutterInfo
@@ -4211,14 +4721,18 @@ start(callback: AsyncCallback\<void\>): void
 
 **示例：**
 
-```js
-videoOutput.start((err) => {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function startVideoOutput(videoOutput: camera.VideoOutput): void {
+  videoOutput.start((err: BusinessError) => {
     if (err) {
-        console.error(`Failed to start the video output ${err.code}`);
-        return;
+      console.error(`Failed to start the video output ${err.code}`);
+      return;
     }
     console.log('Callback invoked to indicate the video output start success.');
-});
+  });
+}
 ```
 
 ### start
@@ -4246,12 +4760,16 @@ start(): Promise\<void\>
 
 **示例：**
 
-```js
-videoOutput.start().then(() => {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function startVideoOutput(videoOutput: camera.VideoOutput): void {
+  videoOutput.start().then(() => {
     console.log('Promise returned to indicate that start method execution success.');
-}).catch((err) => {
+  }).catch((err: BusinessError) => {
     console.log('Failed to videoOutput start '+ err.code);
-});
+  });
+}
 ```
 
 ### stop
@@ -4270,14 +4788,18 @@ stop(callback: AsyncCallback\<void\>): void
 
 **示例：**
 
-```js
-videoOutput.stop((err) => {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function stopVideoOutput(videoOutput: camera.VideoOutput): void {
+  videoOutput.stop((err: BusinessError) => {
     if (err) {
-        console.error(`Failed to stop the video output ${err.code}`);
-        return;
+      console.error(`Failed to stop the video output ${err.code}`);
+      return;
     }
     console.log('Callback invoked to indicate the video output stop success.');
-});
+  });
+}
 ```
 
 ### stop
@@ -4296,12 +4818,16 @@ stop(): Promise\<void\>
 
 **示例：**
 
-```js
-videoOutput.stop().then(() => {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function stopVideoOutput(videoOutput: camera.VideoOutput): void {
+  videoOutput.stop().then(() => {
     console.log('Promise returned to indicate that stop method execution success.');
-}).catch((err) => {
+  }).catch((err: BusinessError) => {
     console.log('Failed to videoOutput stop '+ err.code);
-});
+  });
+}
 ```
 
 ### release
@@ -4328,14 +4854,18 @@ release(callback: AsyncCallback\<void\>): void
 
 **示例：**
 
-```js
-videoOutput.release((err) => {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function releaseVideoOutput(videoOutput: camera.VideoOutput): void {
+  videoOutput.release((err: BusinessError) => {
     if (err) {
-        console.error(`Failed to release the PreviewOutput instance ${err.code}`);
-        return;
+      console.error(`Failed to release the PreviewOutput instance ${err.code}`);
+      return;
     }
-    console.log('Callback invoked to indicate that the PreviewOutput instance is released successfully.');
-});
+    console.log('Callback invoked to indicate that the videoOutput instance is released successfully.');
+  });
+}
 ```
 
 ### release
@@ -4362,12 +4892,16 @@ release(): Promise\<void\>
 
 **示例：**
 
-```js
-videoOutput.release().then(() => {
-    console.log('Promise returned to indicate that the PreviewOutput instance is released successfully.');
-}).catch((err) => {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function releaseVideoOutput(videoOutput: camera.VideoOutput): void {
+  videoOutput.release().then(() => {
+    console.log('Promise returned to indicate that the videoOutput instance is released successfully.');
+  }).catch((err: BusinessError) => {
     console.log('Failed to videoOutput release '+ err.code);
-});
+  });
+}
 ```
 
 ### on('frameStart')
@@ -4387,10 +4921,12 @@ on(type: 'frameStart', callback: AsyncCallback\<void\>): void
 
 **示例：**
 
-```js
-videoOutput.on('frameStart', () => {
+```ts
+function registerVideoOutputFrameStart(videoOutput: camera.VideoOutput): void {
+  videoOutput.on('frameStart', () => {
     console.log('Video frame started');
-})
+  });
+}
 ```
 
 ### off('frameStart')
@@ -4410,8 +4946,11 @@ off(type: 'frameStart', callback?: AsyncCallback\<void\>): void
 
 **示例：**
 
-```js
-videoOutput.off('frameStart')
+```ts
+function unregisterVideoOutputFrameStart(videoOutput: camera.VideoOutput): void {
+  videoOutput.off('frameStart');
+}
+
 ```
 
 ### on('frameEnd')
@@ -4431,10 +4970,12 @@ on(type: 'frameEnd', callback: AsyncCallback\<void\>): void
 
 **示例：**
 
-```js
-videoOutput.on('frameEnd', () => {
+```ts
+function registerVideoOutputFrameEnd(videoOutput: camera.VideoOutput): void {
+  videoOutput.on('frameEnd', () => {
     console.log('Video frame ended');
-})
+  });
+}
 ```
 
 ### off('frameEnd')
@@ -4454,8 +4995,10 @@ off(type: 'frameEnd', callback?: AsyncCallback\<void\>): void
 
 **示例：**
 
-```js
-videoOutput.off('frameEnd')
+```ts
+function unregisterVideoOutputFrameEnd(videoOutput: camera.VideoOutput): void {
+  videoOutput.off('frameEnd');
+}
 ```
 
 ### on('error')
@@ -4475,10 +5018,14 @@ on(type: 'error', callback: ErrorCallback): void
 
 **示例：**
 
-```js
-videoOutput.on('error', (error) => {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function registerVideoOutputError(videoOutput: camera.VideoOutput): void {
+  videoOutput.on('error', (error: BusinessError) => {
     console.log(`Video output error code: ${error.code}`);
-})
+  });
+}
 ```
 
 ### off('error')
@@ -4498,8 +5045,10 @@ off(type: 'error', callback?: ErrorCallback): void
 
 **示例：**
 
-```js
-videoOutput.off('error')
+```ts
+function unregisterVideoOutputError(videoOutput: camera.VideoOutput): void {
+  videoOutput.off('error');
+}
 ```
 
 ## MetadataOutput
@@ -4531,14 +5080,18 @@ start(callback: AsyncCallback\<void\>): void
 
 **示例：**
 
-```js
-metadataOutput.start((err) => {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function startMetadataOutput(metadataOutput: camera.MetadataOutput): void {
+  metadataOutput.start((err: BusinessError) => {
     if (err) {
-        console.error(`Failed to start metadataOutput. ${err.code}`);
-        return;
+      console.error(`Failed to start metadataOutput. ${err.code}`);
+      return;
     }
     console.log('Callback returned with metadataOutput started.');
-})
+  });
+}
 ```
 
 ### start
@@ -4566,12 +5119,16 @@ start(): Promise\<void\>
 
 **示例：**
 
-```js
-metadataOutput.start().then(() => {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function startMetadataOutput(metadataOutput: camera.MetadataOutput): void {
+  metadataOutput.start().then(() => {
     console.log('Callback returned with metadataOutput started.');
-}).catch((err) => {
+  }).catch((err: BusinessError) => {
     console.log('Failed to metadataOutput start '+ err.code);
-});
+  });
+}
 ```
 
 ### stop
@@ -4590,14 +5147,18 @@ stop(callback: AsyncCallback\<void\>): void
 
 **示例：**
 
-```js
-metadataOutput.stop((err) => {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function stopMetadataOutput(metadataOutput: camera.MetadataOutput): void {
+  metadataOutput.stop((err: BusinessError) => {
     if (err) {
-        console.error(`Failed to stop the metadataOutput. ${err.code}`);
-        return;
+      console.error(`Failed to stop the metadataOutput. ${err.code}`);
+      return;
     }
     console.log('Callback returned with metadataOutput stopped.');
-})
+  })
+}
 ```
 
 ### stop
@@ -4616,12 +5177,16 @@ stop(): Promise\<void\>
 
 **示例：**
 
-```js
-metadataOutput.stop().then(() => {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function stopMetadataOutput(metadataOutput: camera.MetadataOutput): void {
+  metadataOutput.stop().then(() => {
     console.log('Callback returned with metadataOutput stopped.');
-}).catch((err) => {
+  }).catch((err: BusinessError) => {
     console.log('Failed to metadataOutput stop '+ err.code);
-});
+  });
+}
 ```
 
 ### on('metadataObjectsAvailable')
@@ -4641,10 +5206,14 @@ on(type: 'metadataObjectsAvailable', callback: AsyncCallback\<Array\<MetadataObj
 
 **示例：**
 
-```js
-metadataOutput.on('metadataObjectsAvailable', (err, metadataObjectArr) => {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function registerMetadataObjectsAvailable(metadataOutput: camera.MetadataOutput): void {
+  metadataOutput.on('metadataObjectsAvailable', (err: BusinessError, metadataObjectArr: Array<camera.MetadataObject>) => {
     console.log(`metadata output metadataObjectsAvailable`);
-})
+  });
+}
 ```
 
 ### off('metadataObjectsAvailable')
@@ -4664,8 +5233,10 @@ off(type: 'metadataObjectsAvailable', callback?: AsyncCallback\<Array\<MetadataO
 
 **示例：**
 
-```js
-metadataOutput.off('metadataObjectsAvailable')
+```ts
+function unregisterMetadataObjectsAvailable(metadataOutput: camera.MetadataOutput): void {
+  metadataOutput.off('metadataObjectsAvailable');
+}
 ```
 
 ### on('error')
@@ -4685,10 +5256,14 @@ on(type: 'error', callback: ErrorCallback): void
 
 **示例：**
 
-```js
-metadataOutput.on('error', (metadataOutputError) => {
+```ts
+import { BusinessError } from '@ohos.base';
+
+function registerMetadataOutputError(metadataOutput: camera.MetadataOutput): void {
+  metadataOutput.on('error', (metadataOutputError: BusinessError) => {
     console.log(`Metadata output error code: ${metadataOutputError.code}`);
-})
+  });
+}
 ```
 
 ### off('error')
@@ -4708,8 +5283,10 @@ off(type: 'error', callback?: ErrorCallback): void
 
 **示例：**
 
-```js
-metadataOutput.off('error')
+```ts
+function unregisterMetadataOutputError(metadataOutput: camera.MetadataOutput): void {
+  metadataOutput.off('error');
+}
 ```
 
 ## MetadataObjectType