SafeArea class
A widget that insets its child with sufficient padding to avoid intrusions by the operating system.
When a minimum padding is specified, the greater of the minimum padding or the safe area padding will be applied.
This example shows how
link SafeArea
can apply padding within a mobile device's screen to make the relevant content completely visible. To create a local project with this code sample, run:
flutter create --sample=widgets.SafeArea.1 mysample
This example creates a blue box containing text that is sufficiently padded to avoid intrusions by the operating system.
link SafeArea( child: Container( constraints: const BoxConstraints.expand(), alignment: Alignment.center, color: Colors.blue, child: const Text('Hello, World!'), ), )
MediaQuery impact
The padding on the MediaQuery for the child will be suitably adjusted to zero out any sides that were avoided by this widget.
See also:
- SliverSafeArea, for insetting slivers to avoid operating system intrusions.
- Padding, for insetting widgets in general.
- MediaQuery, from which the view padding is obtained.
- dart:ui.FlutterView.padding, which reports the padding from the operating system.
- Inheritance
-
- Object
- DiagnosticableTree
- Widget
- StatelessWidget
- SafeArea
Constructors
Properties
- bottom → bool
- Whether to avoid system intrusions on the bottom side of the screen. final
- child → Widget
- The widget below this widget in the tree. final
- hashCode → int
- The hash code for this object. no setterinherited
- key → Key?
- Controls how one widget replaces another widget in the tree. finalinherited
- left → bool
- Whether to avoid system intrusions on the left. final
- maintainBottomViewPadding → bool
- Specifies whether the SafeArea should maintain the bottom MediaQueryData.viewPadding instead of the bottom MediaQueryData.padding, defaults to false. final
- minimum → EdgeInsets
- This minimum padding to apply. final
- right → bool
- Whether to avoid system intrusions on the right. final
- runtimeType → Type
- A representation of the runtime type of the object. no setterinherited
- top → bool
- Whether to avoid system intrusions at the top of the screen, typically the system status bar. final
Methods
- build(
BuildContext context) → Widget - Describes the part of the user interface represented by this widget. override
- createElement(
) → StatelessElement - Creates a StatelessElement to manage this widget's location in the tree. inherited
- debugDescribeChildren(
) → List< DiagnosticsNode> - Returns a list of DiagnosticsNode objects describing this node's children. inherited
- debugFillProperties(
DiagnosticPropertiesBuilder properties) → void - Add additional properties associated with the node. override
- noSuchMethod(
Invocation invocation) → dynamic - Invoked when a nonexistent 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, int wrapWidth = 65}) → 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
Operators
- operator ==(
Object other) → bool - The equality operator. inherited