WidgetInspector class Null safety

A widget that enables inspecting the child widget's structure.

Select a location on your device or emulator and view what widgets and render object that best matches the location. An outline of the selected widget and terse summary information is shown on device with detailed information is shown in the observatory or in IntelliJ when using the Flutter Plugin.

The inspector has a select mode and a view mode.

In the select mode, tapping the device selects the widget that best matches the location of the touch and switches to view mode. Dragging a finger on the device selects the widget under the drag location but does not switch modes. Touching the very edge of the bounding box of a widget triggers selecting the widget even if another widget that also overlaps that location would otherwise have priority.

In the view mode, the previously selected widget is outlined, however, touching the device has the same effect it would have if the inspector wasn't present. This allows interacting with the application and viewing how the selected widget changes position. Clicking on the select icon in the bottom left corner of the application switches back to select mode.



WidgetInspector({Key? key, required Widget child, required InspectorSelectButtonBuilder? selectButtonBuilder})
Creates a widget that enables inspection for the child.


child Widget
The widget that is being inspected.
hashCode int
The hash code for this object.
@nonVirtual, read-only, inherited
key Key?
Controls how one widget replaces another widget in the tree.
final, inherited
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited
selectButtonBuilder InspectorSelectButtonBuilder?
A builder that is called to create the select button.


createElement() StatefulElement
Creates a StatefulElement to manage this widget's location in the tree.
createState() State<WidgetInspector>
Creates the mutable state for this widget at a given location in the tree.
debugDescribeChildren() List<DiagnosticsNode>
Returns a list of DiagnosticsNode objects describing this node's children.
@protected, inherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void
Add additional properties associated with the node.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed.
toDiagnosticsNode({String? name, DiagnosticsTreeStyle? style}) DiagnosticsNode
Returns a debug representation of the object that is used by debugging tools and by DiagnosticsNode.toStringDeep.
toString({DiagnosticLevel minLevel = DiagnosticLevel.info}) String
A string representation of this object.
toStringDeep({String prefixLineOne = '', String? prefixOtherLines, DiagnosticLevel minLevel = DiagnosticLevel.debug}) String
Returns a string representation of this node and its descendants.
toStringShallow({String joiner = ', ', DiagnosticLevel minLevel = DiagnosticLevel.debug}) String
Returns a one-line detailed description of the object.
toStringShort() String
A short, textual description of this widget.


operator ==(Object other) bool
The equality operator.
@nonVirtual, inherited