Focus class

A widget that attaches a FocusNode to the widget tree and forwards key events.

Wrap a child widget with Focus to make it part of the focus traversal and receive keyboard events via onKeyEvent.

Inheritance

• Object
• Widget
• StatefulWidget
• Focus

Constructors

Focus({Key? key, FocusNode? focusNode, dynamic onKeyEvent(KeyEvent)?, required Widget child})

Creates a Focus widget with an optional focusNode and onKeyEvent.

const

Properties

child → Widget

The child widget that receives focus.

final

focusNode → FocusNode?

An optional external focus node.

final

hashCode → int

The hash code for this object.

no setter, inherited

key → Key?

Controls how one widget replaces another in the tree.

final, inherited

onKeyEvent → dynamic Function(KeyEvent)?

A callback invoked when a key event reaches this node.

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

createElement() → StatefulElement

Creates the Element for this widget.

inherited

createState() → State<Focus>

Creates the mutable state for this widget.

override

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