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uni.createCameraContext()

Create and return the context cameraContext object of the camera component.

Platform Difference Description

App	H5	微信小程序	支付宝小程序	百度小程序	抖音小程序	飞书小程序	QQ小程序	快手小程序	京东小程序
x	x	√	√	√	√	x	√	√	√

This API is the js API supporting the camera component, which has the same platform compatibility as the camera component, and can realize a non-full-screen camera. The app can realize full-screen camera through plus.camera.

cameraContext object method list

Method	Parameter	Description	Platform Difference Description
takePhoto	Object	Take a photo, you can specify the quality, and return the path of the image if it succeeds.
setZoom	Object	设置缩放级别。	百度、QQ、快手、京东小程序不支持
startRecord	Object	开始录像
stopRecord	Object	结束录像，成功则返回封面与视频。
onCameraFrame	Function	获取 Camera 实时帧数据。	微信小程序详情、支付宝小程序详情、抖音小程序支持详情

cameraContext.takePhoto

takePhoto Object parameter list:

Parameter	Type	Required	Description
quality	String	No	Imaging quality, the value is high (high quality), normal (normal quality), low (low quality), the default is normal
selfieMirror	Boolean	No	Whether to enable mirroring, the default is true. Only supported by WeChat MiniApp 2.22.0+
success	Function	No	The interface calls the callback function successfully, returns the temporary path of the photo file, res = { tempImagePath }
fail	Function	No	Callback function for interface call failure
complete	Function	No	The callback function for the end of the interface call (it will be executed when the call succeeds or fails)

cameraContext.setZoom

setZoom Object parameter list:

Parameter	Type	Required	Description
zoom	String	yes	zoom level, range [1, maxZoom]. zoom can take a decimal, accurate to one decimal place. maxZoom is available in @initdone return value.
success	Function	No	Callback function for successful interface call
fail	Function	No	Callback function for interface call failure
complete	Function	No	The callback function for the end of the interface call (it will be executed when the call succeeds or fails)

cameraContext.startRecord

StartRecord's Object parameter list:

Parameter	Type	Required	Description
timeoutCallback	Function	No	The recording will end when the connection exceeds 30s or the page is onHide
timeout	Number	No	The upper limit of the recording time, in seconds, the default is 30s. The maximum recording time for WeChat MiniApp cannot exceed 5 minutes, and the maximum recording time for Alipay MiniApp is 10 minutes. Only supported by WeChat 2.22.0+ and Alipay 1.11.0+ MiniApp
selfieMirror	Boolean	No	Whether to enable mirroring, the default is true. Only supported by WeChat MiniApp 2.22.0+
success	Function	No	Callback function for successful interface call
fail	Function	No	Callback function for interface call failure
complete	Function	No	The callback function for the end of the interface call (it will be executed when the call succeeds or fails)

cameraContext.stopRecord

stopRecord Object parameter list:

Parameter	Type	Default	Required	Description
compressed	Boolean	false	否	启动视频压缩，压缩效果同 chooseVideo 。微信2.10.0+ 、抖音2.41.0（Android暂不支持）、快手小程序支持
success	Function		No	Interface calls the callback function successfully, returns the temporary path of the cover and video, res = { tempThumbPath, tempVideoPath }.
fail	Function		No	Callback function for interface call failure
complete	Function		No	The callback function for the end of the interface call (it will be executed when the call succeeds or fails)

Notice

• To realize OCR and other document identification requirements under the App, you can obtain native plug-ins in the plug-in market, [https://ext.dcloud.net.cn/plugin?id=135](https://ext.dcloud.net.cn /plugin?id=135)
• To realize OCR and other document identification requirements under the WeChat MiniApp, the plug-in market also has packaging, search ocr to see.
• You can use the user authorization API to determine whether the user has granted the camera access to the application https://uniapp.dcloud.io/api/other/authorize
• Different MiniApp platforms may have different API implementations. For example, Alipay MiniApp needs to pass the parameter cameraId when calling createCameraContext. Please refer to the specific document when using it.
• The Alipay MiniApp Developer Tool (IDE) does not support debugging this API at the moment, please use the real device debugging function to debug on a real device.