Mob.Scanner (mob v0.3.5)

QR code and barcode scanner.

Requires :camera permission (request via Mob.Permissions.request/2).

Opens a full-screen camera preview. When a code is detected the view dismisses automatically and the result is delivered to handle_info:

handle_info({:scan, :result,    %{type: :qr, value: "https://..."}}, socket)
handle_info({:scan, :cancelled},                                       socket)

iOS: AVCaptureMetadataOutput. Android: CameraX + ML Kit BarcodeScanning.

Android dependency: add to app/build.gradle: implementation 'com.google.mlkit:barcode-scanning:17.2.0' implementation 'androidx.camera:camera-camera2:1.3.0' implementation 'androidx.camera:camera-lifecycle:1.3.0' implementation 'androidx.camera:camera-view:1.3.0'

Summary

Types

format()

Functions

scan(socket, opts \\ [])

Open the barcode scanner.

Types

format()

@type format() ::
  :qr
  | :ean13
  | :ean8
  | :code128
  | :code39
  | :upca
  | :upce
  | :pdf417
  | :aztec
  | :data_matrix

Functions

scan(socket, opts \\ [])

@spec scan(
  Mob.Socket.t(),
  keyword()
) :: Mob.Socket.t()

Open the barcode scanner.

Options:

formats: [format] — list of barcode formats to detect (default [:qr])