Tooltip Widget – Flutter Widget Guide By Flutter Agency

· 4 min read
Flutter Guide By Flutter Agency – Tooltip widget
Flutter Guide By Flutter Agency – Tooltip widget

In Flutter, Tooltip is a material design tooltip used to let user know about the functionality of a button or UI action.

What is Tooltip Widget in Flutter?

Tooltip Widget is usually used to increase the accessibility of your application, providing text-based clues for visual-based widgets.

When a widget is equipped with it, if the user long presses the widget or some appropriate action on the widget, Tooltip appears as a floating label.

Constructor of it will look like below :

Tooltip({
    Key key,
    @required String message,
    double height,
    EdgeInsetsGeometry padding,
    EdgeInsetsGeometry margin,
    double verticalOffset,
    bool preferBelow,
    bool excludeFromSemantics,
    Decoration decoration,
    TextStyle textStyle,
    Duration waitDuration,
    Duration showDuration,
    Widget child,
  });

Properties:

  • Decoration decoration: Specifies the tooltip’s shape and background color.The tooltip shape defaults to a rounded rectangle with a border-radius of 4.0. Tooltips will also default to an opacity of 90% and with the color [Colors.grey700] if ThemeData.brightness is Brightness.dark, and Colors.white if it is Brightness.light.
  • double height: The height of the tooltip’s child.
  • EdgeInsetsGeometry margin: The empty space that surrounds the tooltip.
  • String message: The text to display in the tooltip.
  • EdgeInsetsGeometry padding: The amount of space by which to inset the tooltip’s child.Defaults to 16.0 logical pixels in each direction.
  • Duration showDuration: The length of time that the tooltip will be shown after a long press is released.Defaults to 1.5 seconds.
  • TextStyle textStyle: The style to use for the message of the tooltip.
  • double verticalOffset:  The vertical gap between the widget and the displayed tooltip.
  • Duration waitDuration: The length of time that a pointer must hover over a tooltip’s widget before the tooltip will be shown.Once the pointer leaves the widget, the tooltip will immediately disappear.

How to use Tooltip Widget in Flutter?

Tooltip(
       
        child: IconButton(
        icon: Icon(Icons.high_quality),
        onPressed: () {
        /** */
        },
        ),
      ),

In the above code snippet, we have used an IconButton Widget. Now we will add a message to Tooltip will look like below :

Tooltip(
        message: 'High quality',
        child: IconButton(
        icon: Icon(Icons.high_quality),
        onPressed: () {
        /** */
        },
       ),
      ),

We will get output like below:

Flutter Guide By Flutter Agency – Tooltip widget

Tooltip

The complete source code will look like below :

import 'package:flutter/material.dart';

class TooltipWidget extends StatelessWidget {
  TooltipWidget({
    Key key,
    @required String message,
    double height,
    EdgeInsetsGeometry padding,
    EdgeInsetsGeometry margin,
    double verticalOffset,
    bool preferBelow,
    bool excludeFromSemantics,
    Decoration decoration,
    TextStyle textStyle,
    Duration waitDuration,
    Duration showDuration,
    Widget child,
  });
  @override
  Widget build(BuildContext context) {
    return Center(
        child: Container(
          margin: EdgeInsets.all(10),
          child: Tooltip(
            message: 'My Account',
            child: FlatButton(
              child: Icon(
                Icons.account_box,
                size: 50,
              ),
            ),
          ),
        ));
  }
}

The above code will generate output like below :

Flutter Guide By Flutter Agency – Tooltip widget

Tooltip

Conclusion:

In this article, we have been through What is AnimatedBuilder Widget in Flutter along with how to implement it in a Flutter.

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