ListTile class Null safety
A single fixed-height row that typically contains some text as well as a leading or trailing icon.
A list tile contains one to three lines of text optionally flanked by icons or other widgets, such as check boxes. The icons (or other widgets) for the tile are defined with the leading and trailing parameters. The first line of text is not optional and is specified with title. The value of subtitle, which is optional, will occupy the space allocated for an additional line of text, or two lines if isThreeLine is true. If dense is true then the overall height of this tile and the size of the DefaultTextStyles that wrap the title and subtitle widget are reduced.
It is the responsibility of the caller to ensure that title does not wrap, and to ensure that subtitle doesn't wrap (if isThreeLine is false) or wraps to two lines (if it is true).
The heights of the leading and trailing widgets are constrained according to the Material spec. An exception is made for one-line ListTiles for accessibility. Please see the example below to see how to adhere to both Material spec and accessibility requirements.
Note that leading and trailing widgets can expand as far as they wish horizontally, so ensure that they are properly constrained.
List tiles are typically used in ListViews, or arranged in Columns in Drawers and Cards.
This widget requires a Material widget ancestor in the tree to paint itself on, which is typically provided by the app's Scaffold. The tileColor, selectedTileColor, focusColor, and hoverColor are not painted by the ListTile itself but by the Material widget ancestor. In this case, one can wrap a Material widget around the ListTile, e.g.:
Container(
color: Colors.green,
child: const Material(
child: ListTile(
title: Text('ListTile with red background'),
tileColor: Colors.red,
),
),
)
Performance considerations when wrapping ListTile with Material
Wrapping a large number of ListTiles individually with Materials is expensive. Consider only wrapping the ListTiles that require it or include a common Material ancestor where possible.
ListTile must be wrapped in a Material widget to animate tileColor, selectedTileColor, focusColor, and hoverColor as these colors are not drawn by the list tile itself but by the material widget ancestor.
Row(
children: const <Widget>[
Expanded(
child: ListTile(
leading: FlutterLogo(),
title: Text('These ListTiles are expanded '),
),
),
Expanded(
child: ListTile(
trailing: FlutterLogo(),
title: Text('to fill the available space.'),
),
),
],
)
_act
variable is not 2. When the tile is
tapped, the whole row has an ink splash effect (see InkWell).
int _act = 1;
// ...
ListTile(
leading: const Icon(Icons.flight_land),
title: const Text("Trix's airplane"),
subtitle: _act != 2 ? const Text('The airplane is only in Act II.') : null,
enabled: _act == 2,
onTap: () { /* react to the tile being tapped */ }
)
To be accessible, tappable leading and trailing widgets have to be at least 48x48 in size. However, to adhere to the Material spec, trailing and leading widgets in one-line ListTiles should visually be at most 32 (dense: true) or 40 (dense: false) in height, which may conflict with the accessibility requirement.
For this reason, a one-line ListTile allows the height of leading and trailing widgets to be constrained by the height of the ListTile. This allows for the creation of tappable leading and trailing widgets that are large enough, but it is up to the developer to ensure that their widgets follow the Material spec.
ListTile(
leading: GestureDetector(
behavior: HitTestBehavior.translucent,
onTap: () {},
child: Container(
width: 48,
height: 48,
padding: const EdgeInsets.symmetric(vertical: 4.0),
alignment: Alignment.center,
child: const CircleAvatar(),
),
),
title: const Text('title'),
dense: false,
)
The ListTile layout isn't exactly what I want
If the way ListTile pads and positions its elements isn't quite what you're looking for, it's easy to create custom list items with a combination of other widgets, such as Rows and Columns.
flutter create --sample=material.ListTile.8 mysample
See also:
- ListTileTheme, which defines visual properties for ListTiles.
- ListView, which can display an arbitrary number of ListTiles in a scrolling list.
- CircleAvatar, which shows an icon representing a person and is often used as the leading element of a ListTile.
- Card, which can be used with Column to show a few ListTiles.
- Divider, which can be used to separate ListTiles.
- ListTile.divideTiles, a utility for inserting Dividers in between ListTiles.
- CheckboxListTile, RadioListTile, and SwitchListTile, widgets that combine ListTile with other controls.
- material.io/design/components/lists.html
- Cookbook: Use lists
- Cookbook: Implement swipe to dismiss
- Inheritance
-
- Object
- DiagnosticableTree
- Widget
- StatelessWidget
- ListTile
Constructors
- ListTile({Key? key, Widget? leading, Widget? title, Widget? subtitle, Widget? trailing, bool isThreeLine = false, bool? dense, VisualDensity? visualDensity, ShapeBorder? shape, ListTileStyle? style, Color? selectedColor, Color? iconColor, Color? textColor, EdgeInsetsGeometry? contentPadding, bool enabled = true, GestureTapCallback? onTap, GestureLongPressCallback? onLongPress, MouseCursor? mouseCursor, bool selected = false, Color? focusColor, Color? hoverColor, FocusNode? focusNode, bool autofocus = false, Color? tileColor, Color? selectedTileColor, bool? enableFeedback, double? horizontalTitleGap, double? minVerticalPadding, double? minLeadingWidth})
-
Creates a list tile.
const
Properties
- autofocus → bool
-
True if this widget will be selected as the initial focus when no other
node in its scope is currently focused.
final
- contentPadding → EdgeInsetsGeometry?
-
The tile's internal padding.
final
- dense → bool?
-
Whether this list tile is part of a vertically dense list.
final
- enabled → bool
-
Whether this list tile is interactive.
final
- enableFeedback → bool?
-
Whether detected gestures should provide acoustic and/or haptic feedback.
final
- focusColor → Color?
-
The color for the tile's Material when it has the input focus.
final
- focusNode → FocusNode?
-
An optional focus node to use as the focus node for this widget.
final
- hashCode → int
- The hash code for this object.
- horizontalTitleGap → double?
-
The horizontal gap between the titles and the leading/trailing widgets.
final
- hoverColor → Color?
-
The color for the tile's Material when a pointer is hovering over it.
final
- iconColor → Color?
-
Defines the default color for leading and trailing icons.
final
- isThreeLine → bool
-
Whether this list tile is intended to display three lines of text.
final
- key → Key?
-
Controls how one widget replaces another widget in the tree.
finalinherited
- leading → Widget?
-
A widget to display before the title.
final
- minLeadingWidth → double?
-
The minimum width allocated for the ListTile.leading widget.
final
- minVerticalPadding → double?
-
The minimum padding on the top and bottom of the title and subtitle widgets.
final
- mouseCursor → MouseCursor?
-
The cursor for a mouse pointer when it enters or is hovering over the
widget.
final
- onLongPress → GestureLongPressCallback?
-
Called when the user long-presses on this list tile.
final
- onTap → GestureTapCallback?
-
Called when the user taps this list tile.
final
- runtimeType → Type
-
A representation of the runtime type of the object.
read-onlyinherited
- selected → bool
-
If this tile is also enabled then icons and text are rendered with the same color.
final
- selectedColor → Color?
-
Defines the color used for icons and text when the list tile is selected.
final
- selectedTileColor → Color?
-
Defines the background color of
ListTile
when selected is true.final - shape → ShapeBorder?
-
Defines the tile's InkWell.customBorder and Ink.decoration shape.
final
- style → ListTileStyle?
-
Defines the font used for the title.
final
- subtitle → Widget?
-
Additional content displayed below the title.
final
- textColor → Color?
-
Defines the default color for the title and subtitle.
final
- tileColor → Color?
-
Defines the background color of
ListTile
when selected is false.final - title → Widget?
-
The primary content of the list tile.
final
- trailing → Widget?
-
A widget to display after the title.
final
- visualDensity → VisualDensity?
-
Defines how compact the list tile's layout will be.
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.protected">@protectedinherited -
debugFillProperties(
DiagnosticPropertiesBuilder properties) → void -
Add additional properties associated with the node.
override
-
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
Operators
-
operator ==(
Object other) → bool -
The equality operator.
nonVirtual">@nonVirtualinherited
Static Methods
-
divideTiles(
{BuildContext? context, required Iterable< Widget> tiles, Color? color}) → Iterable<Widget> - Add a one pixel border in between each tile. If color isn't specified the ThemeData.dividerColor of the context's Theme is used.