- Release Notes and Announcements
- Product Introduction
- About Platform Prerequisites
- Guidelines for Code Integration
- Get Demo and SDK
- Accessing via Android Devices
- Accessing via iOS Devices
- Guide to Mini Program Development
- Mini program introduction and development environment
- Mini program code composition
- Framework
- API
- API Overview
- Fundamentals
- Routing
- Redirect
- Forwarding
- Interface
- Network
- Data Caching
- Data Analysis
- canvas
- Media
- WXML
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- Memory
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- Gyroscope
- SMS
- Code scanning
- Encryption
- NFC－Ndef
- NFC－NfcA
- NFC－NfcB
- NFC－NfcF
- NFC－NfcV
- WiFi
- Calendar
- Clipboard
- NFC－getNFCAdapter
- NFC－NFCAdapter
- NFC－IsoDep
- NFC－MifareClassic
- NFC－MifareUltralight
- Bluetooth - Low Energy Central Device
- Bluetooth - Low Energy Peripheral Device
- Bluetooth - Beacon
- Bluetooth - General
- Location
- Open Interfaces
- Custom APIs
- Sensitive API
- Components
- Open source component statement
- FAQs
- Release Notes and Announcements
- Product Introduction
- About Platform Prerequisites
- Guidelines for Code Integration
- Get Demo and SDK
- Accessing via Android Devices
- Accessing via iOS Devices
- Guide to Mini Program Development
- Mini program introduction and development environment
- Mini program code composition
- Framework
- API
- API Overview
- Fundamentals
- Routing
- Redirect
- Forwarding
- Interface
- Network
- Data Caching
- Data Analysis
- canvas
- Media
- WXML
- File
- Device
- Contact person
- Vibration
- Battery Level
- Screen
- Memory
- Device Orientation
- Accessibility
- Network
- Keyboard
- Phone number
- Accelerometer
- Compass
- Gyroscope
- SMS
- Code scanning
- Encryption
- NFC－Ndef
- NFC－NfcA
- NFC－NfcB
- NFC－NfcF
- NFC－NfcV
- WiFi
- Calendar
- Clipboard
- NFC－getNFCAdapter
- NFC－NFCAdapter
- NFC－IsoDep
- NFC－MifareClassic
- NFC－MifareUltralight
- Bluetooth - Low Energy Central Device
- Bluetooth - Low Energy Peripheral Device
- Bluetooth - Beacon
- Bluetooth - General
- Location
- Open Interfaces
- Custom APIs
- Sensitive API
- Components
- Open source component statement
- FAQs
createCameraContext
This method is used via CameraContext wx.createCameraContext().
Note:
To use this interface, it is necessary to concurrently specify the frame-size in the camera component attributes.
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 of the photo file |
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) |
Yes
No
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