InputOTPChild class abstract

Abstract base class for OTP input child elements.

Defines the interface for children that can be placed within an InputOTP widget, including actual input fields, separators, and spacers. Subclasses implement the build method to render their content.

Common factories:

• separator: Creates a visual separator between OTP groups.
• space: Creates spacing between OTP input fields.
• empty: Creates an empty placeholder.
• InputOTPChild.input: Creates a configurable character input.
• InputOTPChild.character: Creates a character input with preset filters.

Example:

InputOTP(
  children: [
    InputOTPChild.input(predicate: (cp) => cp >= 48 && cp <= 57),
    InputOTPChild.space,
    InputOTPChild.input(),
  ],
)

Implementers

• CharacterInputOTPChild
• WidgetInputOTPChild

Constructors

InputOTPChild()

Creates an InputOTPChild.

const

InputOTPChild.character({bool allowLowercaseAlphabet = false, bool allowUppercaseAlphabet = false, bool allowDigit = false, bool obscured = false, bool onlyUppercaseAlphabet = false, bool onlyLowercaseAlphabet = false, bool readOnly = false, TextInputType? keyboardType})

Creates a character input with alphabet and digit filtering.

factory

InputOTPChild.input({CodepointPredicate? predicate, CodepointUnaryOperator? transform, bool obscured = false, bool readOnly = false, TextInputType? keyboardType})

Creates a customizable character input field.

factory

Properties

hashCode → int

The hash code for this object.

no setter, inherited

hasValue → bool

Whether this child can hold a value (i.e., is an input field).

no setter

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

build(BuildContext context, InputOTPChildData data) → Widget

Builds the widget for this OTP child.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited

Static Properties

empty → InputOTPChild

An empty placeholder that takes no space.

no setter

separator → InputOTPChild

A visual separator between OTP groups (e.g., a dash or line).

no setter

space → InputOTPChild

Spacing between OTP input fields.

no setter