TextFieldTapRegion class Null safety
A TapRegion that adds its children to the tap region group for widgets based on the EditableText text editing widget, such as TextField and CupertinoTextField.
Widgets that are wrapped with a TextFieldTapRegion
are considered to be
part of a text field for purposes of unfocus behavior. So, when the user
taps on them, the currently focused text field won't be unfocused by
default. This allows controls like spinners, copy buttons, and formatting
buttons to be associated with a text field without causing the text field to
lose focus when they are interacted with.
This example shows how to use a
TextFieldTapRegion
to wrap a set of
"spinner" buttons that increment and decrement a value in the text field
without causing the text field to lose keyboard focus.
This example includes a generic SpinnerField<T>
class that you can copy/paste
into your own project and customize.
To create a local project with this code sample, run:
flutter create --sample=widgets.TextFieldTapRegion.1 mysample
flutter create --sample=widgets.TextFieldTapRegion.1 mysample
See also:
- TapRegion, the widget that this widget uses to add widgets to the group of text fields.
- Inheritance
-
- Object
- DiagnosticableTree
- Widget
- RenderObjectWidget
- SingleChildRenderObjectWidget
- TapRegion
- TextFieldTapRegion
Constructors
- TextFieldTapRegion({Key? key, required Widget? child, bool enabled = true, TapRegionCallback? onTapOutside, TapRegionCallback? onTapInside, String? debugLabel})
-
Creates a const TextFieldTapRegion.
const
Properties
- child → Widget?
-
The widget below this widget in the tree.
finalinherited
- debugLabel → String?
-
An optional debug label to help with debugging in debug mode.
finalinherited
- enabled → bool
-
Whether or not this TapRegion is enabled as part of the composite region.
finalinherited
- groupId → Object?
-
An optional group ID that groups TapRegions together so that they
operate as one region. If any member of a group is hit by a particular
tap, then the onTapOutside will not be called for any members of the
group. If any member of the group is hit, then all members will have their
onTapInside called.
finalinherited
- hashCode → int
- The hash code for this object.
- key → Key?
-
Controls how one widget replaces another widget in the tree.
finalinherited
- onTapInside → TapRegionCallback?
-
A callback to be invoked when a tap is detected inside of this
TapRegion, or any other tap region with the same groupId, if any.
finalinherited
- onTapOutside → TapRegionCallback?
-
A callback to be invoked when a tap is detected outside of this
TapRegion and any other region with the same groupId, if any.
finalinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
read-onlyinherited
Methods
-
createElement(
) → SingleChildRenderObjectElement -
RenderObjectWidgets always inflate to a RenderObjectElement subclass.
inherited
-
createRenderObject(
BuildContext context) → RenderObject -
Creates an instance of the RenderObject class that this
RenderObjectWidget represents, using the configuration described by this
RenderObjectWidget.
inherited
-
debugDescribeChildren(
) → List< DiagnosticsNode> -
Returns a list of
DiagnosticsNode
objects describing this node's children.protected">@protectedinherited -
debugFillProperties(
DiagnosticPropertiesBuilder properties) → void -
Add additional properties associated with the node.
inherited
-
didUnmountRenderObject(
covariant RenderObject renderObject) → void -
A render object previously associated with this widget has been removed
from the tree. The given RenderObject will be of the same type as
returned by this object's createRenderObject.
protected">@protectedinherited
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a non-existent method or property is accessed.
inherited
-
toDiagnosticsNode(
{String? name, DiagnosticsTreeStyle? style}) → DiagnosticsNode -
Returns a debug representation of the object that is used by debugging
tools and by DiagnosticsNode.toStringDeep.
inherited
-
toString(
{DiagnosticLevel minLevel = DiagnosticLevel.info}) → String -
A string representation of this object.
inherited
-
toStringDeep(
{String prefixLineOne = '', String? prefixOtherLines, DiagnosticLevel minLevel = DiagnosticLevel.debug}) → String -
Returns a string representation of this node and its descendants.
inherited
-
toStringShallow(
{String joiner = ', ', DiagnosticLevel minLevel = DiagnosticLevel.debug}) → String -
Returns a one-line detailed description of the object.
inherited
-
toStringShort(
) → String -
A short, textual description of this widget.
inherited
-
updateRenderObject(
BuildContext context, covariant RenderTapRegion renderObject) → void -
Copies the configuration described by this RenderObjectWidget to the
given RenderObject, which will be of the same type as returned by this
object's createRenderObject.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
nonVirtual">@nonVirtualinherited