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camera

更新时间:2022/12/08 访问次数:4637

说明:本文档适用于小部件3.0。


一、简介


相机组件。支持基本的相机操作如拍照、扫码等。


1.淘宝 App 支持版本


iOS:10.3.10及以上版本。

Android:10.3.16及以上版本。


2.小部件构建支持版本


需要 小部件 2.0及以上版本。


二、API

1. 属


属性

类型

描述

是否支持

将要支持

mode

String

模式。相机模式或者扫码模式。

默认值:normal。

可选值:normal / scanCode

/

device-position

String

前置或者后置摄像头。

默认值:back。

可选值:front / back。

/

flash

String

闪光灯模式(auto/on/off)。

默认值:auto。

可选值:auto / on / off。

/

frame-size

String

预览帧尺寸。

默认值:medium。

可选值:small / medium / large。

/

onStop

EventHandle

摄像头在非正常终止时触发,如退出后台等情况。

/

onError

EventHandle

用户不允许使用摄像头时触发。

/

onScanCode

EventHandle

在扫码识别成功时触发,仅在 mode="scanCode" 时生效。

/


2. 事


名称

描述

事件原型

onStop

摄像头在非正常终止时触发,如退出后台等情况。

(e: Event)=>void

Event:

      detail

onError

用户不允许使用摄像头时触发。

(e: Event)=>void

Event:

       detail

onScanCode

在扫码识别成功时触发,仅在 mode="scanCode" 时生效。

(e: Result)=>void

Result:

       detail


result - 识别结果

type - 码类型


3. 方法


API名称

入参

返回值

描述

my.createCameraContext(cameraId: String)

camera Id

CameraContext

传入cameraId,返回一个cameraContext上下文。


1)CameraContext


API名称

入参

返回值

描述

cameraContext.takePhoto(object: Object)

Object:

quality - 成像质量(normal|low|high)

success - 成功回调

fail - 失败回调

complete - 接口调用结束回调

Void

拍照。

cameraContext.onCameraFrame(callback: Function)

Function入参

width - 宽

height - 高

data - 帧数据(ArrayBuffer)

CameraFrameListener

监听相机帧数据。

注: 暂不支持。


2)CameraFrameListener


API名称

入参

返回值

描述

start

Void

Void

开始监听。

stop

Void

Void

结束监听。


三、使用示例


1.标签声明


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<span class="lake-preview-line" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"><span class="lake-preview-line-number lake-lm-pad-level-1" style="color: rgb(191, 191, 191); margin: 0px 8px 0px 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"></span><span class="lake-preview-codeblock-content" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"><span class="cm-tag cm-bracket" style="color: rgb(34, 134, 58); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"><</span><span class="cm-tag" style="color: rgb(34, 134, 58); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">camera</span> <span class="cm-attribute" style="color: rgb(111, 66, 193); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">id</span>=<span class="cm-string" style="color: rgb(102, 153, 0); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">"camera_take"</span>
</span></span><span class="lake-preview-line" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"><span class="lake-preview-line-number lake-lm-pad-level-1" style="color: rgb(191, 191, 191); margin: 0px 8px 0px 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"></span><span class="lake-preview-codeblock-content" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">     <span class="cm-attribute" style="color: rgb(111, 66, 193); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">mode</span>=<span class="cm-string" style="color: rgb(102, 153, 0); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">"{{mode}}"</span>
</span></span><span class="lake-preview-line" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"><span class="lake-preview-line-number lake-lm-pad-level-1" style="color: rgb(191, 191, 191); margin: 0px 8px 0px 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"></span><span class="lake-preview-codeblock-content" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">     <span class="cm-attribute" style="color: rgb(111, 66, 193); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">device-position</span>=<span class="cm-string" style="color: rgb(102, 153, 0); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">"{{devicePosition}}"</span>
</span></span><span class="lake-preview-line" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"><span class="lake-preview-line-number lake-lm-pad-level-1" style="color: rgb(191, 191, 191); margin: 0px 8px 0px 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"></span><span class="lake-preview-codeblock-content" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">     <span class="cm-attribute" style="color: rgb(111, 66, 193); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">flash</span>=<span class="cm-string" style="color: rgb(102, 153, 0); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">"{{flash}}"</span>
</span></span><span class="lake-preview-line" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"><span class="lake-preview-line-number lake-lm-pad-level-1" style="color: rgb(191, 191, 191); margin: 0px 8px 0px 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"></span><span class="lake-preview-codeblock-content" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">     <span class="cm-attribute" style="color: rgb(111, 66, 193); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">frame-size</span>=<span class="cm-string" style="color: rgb(102, 153, 0); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">"{{frameSize}}"</span>
</span></span><span class="lake-preview-line" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"><span class="lake-preview-line-number lake-lm-pad-level-1" style="color: rgb(191, 191, 191); margin: 0px 8px 0px 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"></span><span class="lake-preview-codeblock-content" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">     <span class="cm-attribute" style="color: rgb(111, 66, 193); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">onScancode</span>=<span class="cm-string" style="color: rgb(102, 153, 0); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">"scanCode"</span>
</span></span><span class="lake-preview-line" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"><span class="lake-preview-line-number lake-lm-pad-level-1" style="color: rgb(191, 191, 191); margin: 0px 8px 0px 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"></span><span class="lake-preview-codeblock-content" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">     <span class="cm-attribute" style="color: rgb(111, 66, 193); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">onError</span>=<span class="cm-string" style="color: rgb(102, 153, 0); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">"error"</span>
</span></span><span class="lake-preview-line" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"><span class="lake-preview-line-number lake-lm-pad-level-1" style="color: rgb(191, 191, 191); margin: 0px 8px 0px 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"></span><span class="lake-preview-codeblock-content" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">     <span class="cm-attribute" style="color: rgb(111, 66, 193); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">onStop</span>=<span class="cm-string" style="color: rgb(102, 153, 0); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">"stop"</span>
</span></span><span class="lake-preview-line" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"><span class="lake-preview-line-number lake-lm-pad-level-1" style="color: rgb(191, 191, 191); margin: 0px 8px 0px 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"></span><span class="lake-preview-codeblock-content" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">     <span class="cm-attribute" style="color: rgb(111, 66, 193); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">style</span>=<span class="cm-string" style="color: rgb(102, 153, 0); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">" width: 100%; height: 300px; margin-top: 55px"</span><span class="cm-tag cm-bracket" style="color: rgb(34, 134, 58); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">></span>
</span></span><span class="lake-preview-line" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"><span class="lake-preview-line-number lake-lm-pad-level-0" style="color: rgb(191, 191, 191); margin: 0px 8px 0px 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"></span><span class="lake-preview-codeblock-content" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">  <span class="cm-tag cm-bracket" style="color: rgb(34, 134, 58); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"></</span><span class="cm-tag" style="color: rgb(34, 134, 58); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">camera</span><span class="cm-tag cm-bracket" style="color: rgb(34, 134, 58); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">></span></span></span>


2.事件响应


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<span class="lake-preview-line" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"><span class="lake-preview-line-number lake-lm-pad-level-1" style="color: rgb(191, 191, 191); margin: 0px 8px 0px 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"></span><span class="lake-preview-codeblock-content" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"><span class="cm-variable" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">Page</span>({
</span></span><span class="lake-preview-line" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"><span class="lake-preview-line-number lake-lm-pad-level-1" style="color: rgb(191, 191, 191); margin: 0px 8px 0px 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"></span><span class="lake-preview-codeblock-content" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">  <span class="cm-property" style="color: rgb(0, 92, 197); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">data</span>: {
</span></span><span class="lake-preview-line" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"><span class="lake-preview-line-number lake-lm-pad-level-1" style="color: rgb(191, 191, 191); margin: 0px 8px 0px 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"></span><span class="lake-preview-codeblock-content" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">    <span class="cm-property" style="color: rgb(0, 92, 197); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">url_temp</span>: <span class="cm-string" style="color: rgb(102, 153, 0); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">'null'</span>,
</span></span><span class="lake-preview-line" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"><span class="lake-preview-line-number lake-lm-pad-level-1" style="color: rgb(191, 191, 191); margin: 0px 8px 0px 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"></span><span class="lake-preview-codeblock-content" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">    <span class="cm-property" style="color: rgb(0, 92, 197); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">mode</span>:<span class="cm-string" style="color: rgb(102, 153, 0); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">''</span>,
</span></span><span class="lake-preview-line" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"><span class="lake-preview-line-number lake-lm-pad-level-1" style="color: rgb(191, 191, 191); margin: 0px 8px 0px 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"></span><span class="lake-preview-codeblock-content" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">    <span class="cm-property" style="color: rgb(0, 92, 197); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">devicePosition</span>:<span class="cm-string" style="color: rgb(102, 153, 0); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">''</span>,
</span></span><span class="lake-preview-line" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"><span class="lake-preview-line-number lake-lm-pad-level-1" style="color: rgb(191, 191, 191); margin: 0px 8px 0px 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"></span><span class="lake-preview-codeblock-content" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">    <span class="cm-property" style="color: rgb(0, 92, 197); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">flash</span>:<span class="cm-string" style="color: rgb(102, 153, 0); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">''</span>,
</span></span><span class="lake-preview-line" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"><span class="lake-preview-line-number lake-lm-pad-level-1" style="color: rgb(191, 191, 191); margin: 0px 8px 0px 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"></span><span class="lake-preview-codeblock-content" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">    <span class="cm-property" style="color: rgb(0, 92, 197); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">frameSize</span>:<span class="cm-string" style="color: rgb(102, 153, 0); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">''</span>,
</span></span><span class="lake-preview-line" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"><span class="lake-preview-line-number lake-lm-pad-level-1" style="color: rgb(191, 191, 191); margin: 0px 8px 0px 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"></span><span class="lake-preview-codeblock-content" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">    <span class="cm-property" style="color: rgb(0, 92, 197); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">quality</span>:<span class="cm-string" style="color: rgb(102, 153, 0); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">''</span>,
</span></span><span class="lake-preview-line" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"><span class="lake-preview-line-number lake-lm-pad-level-1" style="color: rgb(191, 191, 191); margin: 0px 8px 0px 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"></span><span class="lake-preview-codeblock-content" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">    <span class="cm-property" style="color: rgb(0, 92, 197); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">frameData</span>:<span class="cm-string" style="color: rgb(102, 153, 0); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">''</span>,
</span></span><span class="lake-preview-line" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"><span class="lake-preview-line-number lake-lm-pad-level-0" style="color: rgb(191, 191, 191); margin: 0px 8px 0px 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"></span><span class="lake-preview-codeblock-content" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">  },
</span></span><span class="lake-preview-line" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"><span class="lake-preview-line-number lake-lm-pad-level-0" style="color: rgb(191, 191, 191); margin: 0px 8px 0px 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"></span><span class="lake-preview-codeblock-content" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">  <span class="cm-property" style="color: rgb(0, 92, 197); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">error</span>(<span class="cm-def" style="color: rgb(0, 92, 197); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">e</span>) {
</span></span><span class="lake-preview-line" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"><span class="lake-preview-line-number lake-lm-pad-level-0" style="color: rgb(191, 191, 191); margin: 0px 8px 0px 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"></span><span class="lake-preview-codeblock-content" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">    <span class="cm-variable" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">console</span>.<span class="cm-property" style="color: rgb(0, 92, 197); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">log</span>(<span class="cm-variable-2" style="color: rgb(0, 92, 197); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">e</span>.<span class="cm-property" style="color: rgb(0, 92, 197); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">detail</span>);
</span></span><span class="lake-preview-line" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"><span class="lake-preview-line-number lake-lm-pad-level-0" style="color: rgb(191, 191, 191); margin: 0px 8px 0px 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"></span><span class="lake-preview-codeblock-content" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">    <span class="cm-variable" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">my</span>.<span class="cm-property" style="color: rgb(0, 92, 197); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">alert</span>({<span class="cm-property" style="color: rgb(0, 92, 197); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">content</span> : <span class="cm-string" style="color: rgb(102, 153, 0); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">"cameraError"</span> <span class="cm-operator" style="color: rgb(215, 58, 73); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">+</span> <span class="cm-variable" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">JSON</span>.<span class="cm-property" style="color: rgb(0, 92, 197); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">stringify</span>(<span class="cm-variable-2" style="color: rgb(0, 92, 197); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">e</span>)});
</span></span><span class="lake-preview-line" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"><span class="lake-preview-line-number lake-lm-pad-level-0" style="color: rgb(191, 191, 191); margin: 0px 8px 0px 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"></span><span class="lake-preview-codeblock-content" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">  },
</span></span><span class="lake-preview-line" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"><span class="lake-preview-line-number lake-lm-pad-level-0" style="color: rgb(191, 191, 191); margin: 0px 8px 0px 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"></span><span class="lake-preview-codeblock-content" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"
</span></span><span class="lake-preview-line" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"><span class="lake-preview-line-number lake-lm-pad-level-0" style="color: rgb(191, 191, 191); margin: 0px 8px 0px 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"></span><span class="lake-preview-codeblock-content" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">  <span class="cm-property" style="color: rgb(0, 92, 197); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">scanCode</span>(<span class="cm-def" style="color: rgb(0, 92, 197); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">e</span>){
</span></span><span class="lake-preview-line" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"><span class="lake-preview-line-number lake-lm-pad-level-0" style="color: rgb(191, 191, 191); margin: 0px 8px 0px 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"></span><span class="lake-preview-codeblock-content" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">    <span class="cm-variable" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">console</span>.<span class="cm-property" style="color: rgb(0, 92, 197); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">log</span>(<span class="cm-variable-2" style="color: rgb(0, 92, 197); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">e</span>.<span class="cm-property" style="color: rgb(0, 92, 197); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">detail</span>);
</span></span><span class="lake-preview-line" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"><span class="lake-preview-line-number lake-lm-pad-level-0" style="color: rgb(191, 191, 191); margin: 0px 8px 0px 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"></span><span class="lake-preview-codeblock-content" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">    <span class="cm-variable" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">my</span>.<span class="cm-property" style="color: rgb(0, 92, 197); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">alert</span>({<span class="cm-property" style="color: rgb(0, 92, 197); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">content</span> : <span class="cm-string" style="color: rgb(102, 153, 0); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">"cameraScanCode"</span> <span class="cm-operator" style="color: rgb(215, 58, 73); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">+</span> <span class="cm-variable" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">JSON</span>.<span class="cm-property" style="color: rgb(0, 92, 197); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">stringify</span>(<span class="cm-variable-2" style="color: rgb(0, 92, 197); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">e</span>)});
</span></span><span class="lake-preview-line" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"><span class="lake-preview-line-number lake-lm-pad-level-0" style="color: rgb(191, 191, 191); margin: 0px 8px 0px 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"></span><span class="lake-preview-codeblock-content" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">  },
</span></span><span class="lake-preview-line" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"><span class="lake-preview-line-number lake-lm-pad-level-0" style="color: rgb(191, 191, 191); margin: 0px 8px 0px 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"></span><span class="lake-preview-codeblock-content" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">  <span class="cm-property" style="color: rgb(0, 92, 197); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">stop</span>(<span class="cm-def" style="color: rgb(0, 92, 197); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">e</span>) {
</span></span><span class="lake-preview-line" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"><span class="lake-preview-line-number lake-lm-pad-level-0" style="color: rgb(191, 191, 191); margin: 0px 8px 0px 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"></span><span class="lake-preview-codeblock-content" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">    <span class="cm-variable" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">console</span>.<span class="cm-property" style="color: rgb(0, 92, 197); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">log</span>(<span class="cm-variable-2" style="color: rgb(0, 92, 197); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">e</span>.<span class="cm-property" style="color: rgb(0, 92, 197); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">detail</span>);
</span></span><span class="lake-preview-line" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"><span class="lake-preview-line-number lake-lm-pad-level-0" style="color: rgb(191, 191, 191); margin: 0px 8px 0px 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"></span><span class="lake-preview-codeblock-content" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">    <span class="cm-variable" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">my</span>.<span class="cm-property" style="color: rgb(0, 92, 197); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">alert</span>({<span class="cm-property" style="color: rgb(0, 92, 197); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">content</span> : <span class="cm-string" style="color: rgb(102, 153, 0); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">"cameraStop"</span> <span class="cm-operator" style="color: rgb(215, 58, 73); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">+</span> <span class="cm-variable" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">JSON</span>.<span class="cm-property" style="color: rgb(0, 92, 197); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">stringify</span>(<span class="cm-variable-2" style="color: rgb(0, 92, 197); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">e</span>)});
</span></span><span class="lake-preview-line" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"><span class="lake-preview-line-number lake-lm-pad-level-0" style="color: rgb(191, 191, 191); margin: 0px 8px 0px 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"></span><span class="lake-preview-codeblock-content" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">  },
</span></span><span class="lake-preview-line" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"><span class="lake-preview-line-number lake-lm-pad-level-0" style="color: rgb(191, 191, 191); margin: 0px 8px 0px 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"></span><span class="lake-preview-codeblock-content" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">  <span class="cm-property" style="color: rgb(0, 92, 197); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">off</span>(<span class="cm-def" style="color: rgb(0, 92, 197); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">e</span>) {
</span></span><span class="lake-preview-line" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"><span class="lake-preview-line-number lake-lm-pad-level-0" style="color: rgb(191, 191, 191); margin: 0px 8px 0px 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"></span><span class="lake-preview-codeblock-content" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">    <span class="cm-variable" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">console</span>.<span class="cm-property" style="color: rgb(0, 92, 197); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">log</span>(<span class="cm-variable-2" style="color: rgb(0, 92, 197); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">e</span>.<span class="cm-property" style="color: rgb(0, 92, 197); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">detail</span>);
</span></span><span class="lake-preview-line" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"><span class="lake-preview-line-number lake-lm-pad-level-0" style="color: rgb(191, 191, 191); margin: 0px 8px 0px 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"></span><span class="lake-preview-codeblock-content" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">    <span class="cm-variable" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">my</span>.<span class="cm-property" style="color: rgb(0, 92, 197); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">alert</span>({<span class="cm-property" style="color: rgb(0, 92, 197); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">content</span> : <span class="cm-string" style="color: rgb(102, 153, 0); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">"cameraOff"</span> <span class="cm-operator" style="color: rgb(215, 58, 73); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">+</span> <span class="cm-variable" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">JSON</span>.<span class="cm-property" style="color: rgb(0, 92, 197); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">stringify</span>(<span class="cm-variable-2" style="color: rgb(0, 92, 197); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">e</span>)});
</span></span><span class="lake-preview-line" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"><span class="lake-preview-line-number lake-lm-pad-level-0" style="color: rgb(191, 191, 191); margin: 0px 8px 0px 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"></span><span class="lake-preview-codeblock-content" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">  }
</span></span><span class="lake-preview-line" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"><span class="lake-preview-line-number lake-lm-pad-level-0" style="color: rgb(191, 191, 191); margin: 0px 8px 0px 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"></span><span class="lake-preview-codeblock-content" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"
</span></span><span class="lake-preview-line" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"><span class="lake-preview-line-number lake-lm-pad-level-0" style="color: rgb(191, 191, 191); margin: 0px 8px 0px 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"></span><span class="lake-preview-codeblock-content" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">  });</span></span>


3.监听相机帧数据


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<span class="lake-preview-line" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"><span class="lake-preview-line-number lake-lm-pad-level-0" style="color: rgb(191, 191, 191); margin: 0px 8px 0px 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"></span><span class="lake-preview-codeblock-content" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">const context = my.createCameraContext()
</span></span><span class="lake-preview-line" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"><span class="lake-preview-line-number lake-lm-pad-level-0" style="color: rgb(191, 191, 191); margin: 0px 8px 0px 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"></span><span class="lake-preview-codeblock-content" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">const listener = context.onCameraFrame((frame) => {
</span></span><span class="lake-preview-line" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"><span class="lake-preview-line-number lake-lm-pad-level-0" style="color: rgb(191, 191, 191); margin: 0px 8px 0px 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"></span><span class="lake-preview-codeblock-content" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">  console.log(frame.data instanceof ArrayBuffer, frame.width, frame.height)
</span></span><span class="lake-preview-line" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"><span class="lake-preview-line-number lake-lm-pad-level-0" style="color: rgb(191, 191, 191); margin: 0px 8px 0px 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"></span><span class="lake-preview-codeblock-content" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">})
</span></span><span class="lake-preview-line" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"><span class="lake-preview-line-number lake-lm-pad-level-0" style="color: rgb(191, 191, 191); margin: 0px 8px 0px 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"></span><span class="lake-preview-codeblock-content" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">listener.start();// 开始监听
</span></span><span class="lake-preview-line" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"><span class="lake-preview-line-number lake-lm-pad-level-0" style="color: rgb(191, 191, 191); margin: 0px 8px 0px 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);"></span><span class="lake-preview-codeblock-content" style="color: rgb(89, 89, 89); margin: 0px; padding: 0px; background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0);">listener.stop();// 结束监听</span></span>


四、FAQ


监听相机帧事件支持吗?


目前尚不支持。

FAQ

关于此文档暂时还没有FAQ
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