java.lang.Object
java.lang.Enum<ErrorCorrectionLevel>
com.google.zxing.qrcode.decoder.ErrorCorrectionLevel
All Implemented Interfaces:
Serializable, Comparable<ErrorCorrectionLevel>, java.lang.constant.Constable
public enum ErrorCorrectionLevelextends Enum<ErrorCorrectionLevel>

See ISO 18004:2006, 6.5.1. This enum encapsulates the four error correction levels defined by the QR code standard.

  • Enum Constant Details

  • Field Details

    • FOR_BITS

      private static final ErrorCorrectionLevel[] FOR_BITS
      Levels in the order the format bits select them.

    • bits

      private final int bits
      The two bits stored in the format information.

  • Constructor Details

    • ErrorCorrectionLevel

      private ErrorCorrectionLevel(int bits)
      Creates a level with its format bits.
      Parameters:
      bits - the two bits naming this level

  • Method Details

    • values

      public static ErrorCorrectionLevel[] values()
      Returns an array containing the constants of this enum class, in the order they are declared.
      Returns:
      an array containing the constants of this enum class, in the order they are declared

    • valueOf

      public static ErrorCorrectionLevel valueOf(String name)
      Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (Extraneous whitespace characters are not permitted.)
      Parameters:
      name - the name of the enum constant to be returned.
      Returns:
      the enum constant with the specified name
      Throws:
      IllegalArgumentException - if this enum class has no constant with the specified name
      NullPointerException - if the argument is null

    • getBits

      public int getBits()
      Get the two-bit value that encodes this level in a QR Code format field.
      Returns:
      the two error correction bits for this level

    • forBits

      public static ErrorCorrectionLevel forBits(int bits)
      Get the ErrorCorrectionLevel for the given bits.
      Parameters:
      bits - int containing the two bits encoding a QR Code's error correction level
      Returns:
      ErrorCorrectionLevel representing the encoded error correction level