Key class abstract

An identification key for widgets, analogous to Flutter's Key.

Keys control how the framework replaces widgets in the tree when reconfiguring, enabling preservation of state across widget changes.

Implementers

• GlobalKey
• LocalKey

Constructors

Key()

Creates a Key.

const

Key.empty()

Creates a const key with an empty value.

const

Key.value(String value)

Creates a ValueKey with the given value.

const

factory

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