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Types
Generates a QR code image from arbitrary text using ZXing's QRCodeWriter, rendered to a square PNG (size px, clamped 100–1000, default 300) and returned base64-encoded. No permissions required; no camera or hardware involved.
Provider for the QR/barcode module: ScanQrCodeTool, ScanBarcodeTool, and GenerateQrCodeTool.
Decodes a 1D/product barcode from a still image file (referenced by image_uri) using ML Kit, restricted to EAN-13, UPC-A, CODE-128, CODE-39, EAN-8, and UPC-E. Reads an existing image — does NOT open the camera, and the module declares no permissions. image_uri is validated by ImageUriValidator (external-storage sandbox for file://, host-owned content:// authorities refused). Returns the first barcode found, or found = false when the image decodes but contains none; a decode/scanner failure is an error.
Decodes a QR code from a still image file (referenced by image_uri) using ML Kit barcode scanning restricted to Barcode.FORMAT_QR_CODE. This reads an existing image — it does NOT open the camera, and the module declares no permissions. image_uri is validated by ImageUriValidator: file:// URIs (or bare absolute paths) are sandboxed to external storage, content:// URIs served by the host app itself are refused, other schemes are rejected. Returns the first QR code found, or found = false when the image decodes but contains none; a decode/scanner failure is an error.