TextInputFormatters class

Provides factory methods for common text input formatters.

TextInputFormatters is a utility class that creates various pre-configured TextInputFormatter instances for common formatting needs like uppercase/lowercase conversion, numeric input, time formatting, and more.

Example:

TextField(
  inputFormatters: [
    TextInputFormatters.toUpperCase,
    TextInputFormatters.integerOnly(min: 0, max: 100),
  ],
)

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

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 Methods

digitsOnly({double? min, double? max, int? decimalDigits}) → TextInputFormatter

Creates a formatter that only allows decimal numeric input.

hex({bool hashPrefix = false}) → TextInputFormatter

Creates a formatter for hexadecimal input.

integerOnly({int? min, int? max}) → TextInputFormatter

Creates a formatter that only allows integer input with optional min/max bounds.

mathExpression({Map<String, dynamic>? context}) → TextInputFormatter

Creates a formatter that evaluates mathematical expressions.

time({required int length}) → TextInputFormatter

Creates a formatter for time input with leading zeros.

Constants

toLowerCase → const TextInputFormatter

Converts all input text to lowercase.

toUpperCase → const TextInputFormatter

Converts all input text to uppercase.