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DocumentationTencent Cloud Super App as a ServiceGuildlines for Mini Program DevelopmentAPIMediaCamera
Camera
Last updated: 2025-03-25 18:15:55
createCameraContext
This method is used via CameraContext wx.createCameraContext().
Feature Description: Creates a
CameraContext object.Return Value: CameraContext.
CameraContext
Feature Description: A CameraContext instance, which can be obtained through wx.createCameraContext. The
cameraContext is bound to the unique <camera> component within the page, operating the corresponding <camera> component..onCameraFrame
This method is used via CameraFrameListener CameraContext.onCameraFrame(onCameraFrameCallback callback).
Feature Description: Gets real-time frame data from the Camera.
Parameter and Description: Function callback.
Callback function parameter: Object res.
Attribute | Type | Description |
width | number | The width of the image data rectangle. |
height | number | The height of the source image data rectangle. |
data | ArrayBuffer | Image pixel data, a one-dimensional array, with every four items representing the RGBA of a pixel. |
Return Value:CameraFrameListener。
Sample Code
const context = wx.createCameraContext()const listener = context.onCameraFrame((frame) => {console.log(frame.data instanceof ArrayBuffer, frame.width, frame.height)})listener.start()
.setZoom
This method is used via CameraContext.setZoom(Object object).
Feature Description: Sets the scaling level.
Parameter and Description: Object.
Attribute | Type | Default value | Required | Description |
zoom | number | - | Yes | Scaling level, ranging [1, maxZoom]. The zoom can be a decimal, accurate to one decimal place. maxZoom can be obtained from the return value of bindinitdone. |
success | function | - | No | Callback Function of Successful Interface Call |
fail | function | - | No | Callback Function of Failing Interface Call |
complete | function | - | No | Callback function executed upon the completion of the interface invocation (both successful and unsuccessful invocations) |
Parameters for object.success callback function: Object res.
Attribute | Type | Description |
zoom | number | The actual set scaling level. Due to system constraints, some models may not be able to be set to the specified value, and will instead use the closest feasible value. |
.startRecord
This method is used via CameraContext.startRecord(Object object).
Feature Description: Starts video recording.
Parameter and Description: Object.
Attribute | Type | Default value | Required | Description |
timeoutCallback | function | - | No | The recording will terminate after 30 seconds or when the page onHide is triggered. |
success | function | - | No | Callback Function of Successful Interface Call |
fail | function | - | No | Callback Function of Failing Interface Call |
complete | function | - | No | Callback function executed upon the completion of the interface invocation (both successful and unsuccessful invocations) |
Parameter of the object.timeoutCallback callback function: Object res.
Attribute | Type | Description |
tempThumbPath | string | Temporary path of the cover image file |
tempVideoPath | string | Temporary path of the video file |
.stopRecord
This method is used via CameraContext.startRecord(Object object).
Feature Description: Stops video recording.
Parameter and Description: Object.
Attribute | Type | Default value | Required | Description |
success | function | - | No | Callback Function of Successful Interface Call |
fail | function | - | No | Callback Function of Failing Interface Call |
complete | function | - | No | Callback function executed upon the completion of the interface invocation (both successful and unsuccessful invocations) |
Parameters for object.success callback function: Object res.
Attribute | Type | Description |
tempThumbPath | string | Temporary path of the cover image file |
tempVideoPath | string | Temporary path of the video file |
.takePhoto
This method is used via CameraFrameListener.stop(Object object).
Feature Description: Captures photographs.
Parameter and Description: Object.
Attribute | Type | Default value | Required | Description |
quality | string | normal | No | Image Quality |
success | function | - | No | Callback Function of Successful Interface Call |
fail | function | - | No | Callback Function of Failing Interface Call |
complete | function | - | No | Callback function executed upon the completion of the interface invocation (both successful and unsuccessful invocations) |
Valid values of object.quality
Value | Description |
high | Higher quality |
normal | Standard Quality |
low | Lower quality |
Parameters for object.success callback function: Object res.
Attribute | Type | Description |
tempImagePath | string | Temporary path (local path) for photo files, Android is jpg image format, ios is png |
CameraFrameListener
.start
This method is used via CameraFrameListener.start(Object object).
Feature Description: Starts monitoring frame data.
Parameter and Description: Object.
Attribute | Type | Default value | Required | Description |
success | function | - | No | Callback Function of Successful Interface Call |
fail | function | - | No | Callback Function of Failing Interface Call |
complete | function | - | No | Callback function executed upon the completion of the interface invocation (both successful and unsuccessful invocations) |
.stop
This method is used via CameraFrameListener.stop(Object object).
Feature Description: Stops monitoring frame data.
Parameter and Description: Object.
Attribute | Type | Default value | Required | Description |
success | function | - | No | Callback Function of Successful Interface Call |
fail | function | - | No | Callback Function of Failing Interface Call |
complete | function | - | No | Callback function executed upon the completion of the interface invocation (both successful and unsuccessful invocations) |
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