DataTable class Null safety

A Material Design data table.

Displaying data in a table is expensive, because to lay out the table all the data must be measured twice, once to negotiate the dimensions to use for each column, and once to actually lay out the table given the results of the negotiation.

For this reason, if you have a lot of data (say, more than a dozen rows with a dozen columns, though the precise limits depend on the target device), it is suggested that you use a PaginatedDataTable which automatically splits the data into multiple pages.

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This sample shows how to display a DataTable with three columns: name, age, and role. The columns are defined by three DataColumn objects. The table contains three rows of data for three example users, the data for which is defined by three DataRow objects.

To create a local project with this code sample, run:
flutter create --sample=material.DataTable.1 mysample

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This sample shows how to display a DataTable with alternate colors per row, and a custom color for when the row is selected.
To create a local project with this code sample, run:
flutter create --sample=material.DataTable.2 mysample

DataTable can be sorted on the basis of any column in columns in ascending or descending order. If sortColumnIndex is non-null, then the table will be sorted by the values in the specified column. The boolean sortAscending flag controls the sort order.

See also:

Inheritance

Constructors

DataTable({Key? key, required List<DataColumn> columns, int? sortColumnIndex, bool sortAscending = true, ValueSetter<bool?>? onSelectAll, Decoration? decoration, MaterialStateProperty<Color?>? dataRowColor, double? dataRowHeight, TextStyle? dataTextStyle, MaterialStateProperty<Color?>? headingRowColor, double? headingRowHeight, TextStyle? headingTextStyle, double? horizontalMargin, double? columnSpacing, bool showCheckboxColumn = true, bool showBottomBorder = false, double? dividerThickness, required List<DataRow> rows, double? checkboxHorizontalMargin, TableBorder? border})
Creates a widget describing a data table.

Properties

border → TableBorder?
The style to use when painting the boundary and interior divisions of the table.
final
checkboxHorizontalMargin → double?
Horizontal margin around the checkbox, if it is displayed.
final
columns → List<DataColumn>
The configuration and labels for the columns in the table.
final
columnSpacing → double?
The horizontal margin between the contents of each data column.
final
dataRowColor → MaterialStateProperty<Color?>?
The background color for the data rows.
final
dataRowHeight → double?
The height of each row (excluding the row that contains column headings).
final
dataTextStyle → TextStyle?
The text style for data rows.
final
decoration → Decoration?
The background and border decoration for the table.
final
dividerThickness → double?
The width of the divider that appears between TableRows.
final
hashCode → int
The hash code for this object.
nonVirtual">@nonVirtualread-onlyinherited
headingRowColor → MaterialStateProperty<Color?>?
The background color for the heading row.
final
headingRowHeight → double?
The height of the heading row.
final
headingTextStyle → TextStyle?
The text style for the heading row.
final
horizontalMargin → double?
The horizontal margin between the edges of the table and the content in the first and last cells of each row.
final
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
onSelectAll → ValueSetter<bool?>?
Invoked when the user selects or unselects every row, using the checkbox in the heading row.
final
rows → List<DataRow>
The data to show in each row (excluding the row that contains the column headings).
final
runtimeType → Type
A representation of the runtime type of the object.
read-onlyinherited
showBottomBorder → bool
Whether a border at the bottom of the table is displayed.
final
showCheckboxColumn → bool
Whether the widget should display checkboxes for selectable rows.
final
sortAscending → bool
Whether the column mentioned in sortColumnIndex, if any, is sorted in ascending order.
final
sortColumnIndex → int?
The current primary sort key's column.
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.
inherited
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