Reader class abstract

Implementations of this interface can decode an image of a barcode in some format into the String it encodes. For example, QRCodeReader can decode a QR code. The decoder may optionally receive hints from the caller which may help it decode more quickly or accurately.

See MultiFormatReader, which attempts to determine what barcode format is present within the image as well, and then decodes it accordingly.

@author Sean Owen @author [e-mail] (Daniel Switkin)

Implementers

• AztecReader
• ByQuadrantReader
• DataMatrixReader
• MaxiCodeReader
• MultiFormatReader
• OneDReader
• PDF417Reader
• QRCodeReader

Constructors

Reader()

Properties

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

decode(BinaryBitmap image, [Map<DecodeHintType, Object>? hints]) → Result

Locates and decodes a barcode in some format within an image. This method also accepts hints, each possibly associated to some data, which may help the implementation decode.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

reset() → void

Resets any internal state the implementation has after a decode, to prepare it for reuse.

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited