my.scan

2026-01-15 01:54

Call the scan QR code or bar code function.

Hint: after calling my.scan API, the onHide() and onShow() lifecycle callback function of App and Page will be executed. The following is the executing sequence:

App.onHide() -> Page.onHide() -> App.onShow() -> Page.onShow().

Supported types of mini programs: DSL, H5+

Sample Code

copy
Page({
  scan() {
    my.scan({
      type: 'qr',
      success: (res) => {
        my.alert({ title: res.code });
      },
    });
  }
})

Parameters

Property	Type	Required	Description
type	String	No	Type for scanning (`qr` by default): 1. `qr` : two-dimensional QR scanning frame. 2. `bar` : Linear barcode scanning frame.
hideAlbum	Boolean	No	Hide album entry or not. If it is `false` , there will be an entry for user to select a picture from the album as the scanned picture. Otherwise, user will use camera to scan the content directly. By default, its value is `false` .
success	Function	No	Callback function upon call success.
fail	Function	No	Callback function upon call failure.
complete	Function	No	Callback function upon call completion (to be executed upon either call success or failure).

Success Callback Function

The incoming parameter is of the Object type with the following attributes:

Property	Type	Description
code	String	Data returned from scanning.
qrCode	String	QR code data returned from scanning.
barCode	String	Bar code data returned from scanning.

Error Code

Error	Description
10	User cancellation.
11	Operation failure.