Flutter Radio Button | Radio Button in Flutter || Custom Radio Buttons Flutter | #8

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Radio Button in flutter
A radio button is also known as the options button which holds the Boolean value. It allows the user to choose only one option from a predefined set of options. This feature makes it different from a checkbox where we can select more than one option and the unselected state to be restored. We can arrange the radio button in a group of two or more and displayed on the screen as circular holes with white space (for unselected) or a dot (for selected). We can also provide a label for each corresponding radio button describing the choice that the radio button represents. A radio button can be selected by clicking the mouse on the circular hole or using a keyboard shortcut.
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In this section, we are going to explain how to use radio buttons in Flutter. Flutter allows us to use radio buttons with the help of 'Radio', 'RadioListTile', or 'ListTitle' Widgets.

The flutter radio button does not maintain any state itself. When we select any radio option, it invokes the onChanged callback and passing the value as a parameter. If the value and groupValue match, the radio option will be selected.
Flutter Radio Button | Radio Button in Flutter || Custom Radio Buttons Flutter
Flutter Radio Button | Radio Button in Flutter || Custom Radio Buttons Flutter
Flutter Radio Button | Radio Button in Flutter || Custom Radio Buttons Flutter
Flutter Radio Button | Radio Button in Flutter || Custom Radio Buttons Flutter


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Using radio buttons
Radio buttons allow the user to select one option from a set. Use radio buttons when the user needs to see all available options. If available options can be collapsed, consider using a dropdown menu because it uses less space.

Import radio buttons
Before you can use radio buttons, you need to import the Material Components package for Flutter:

package:flutter/material.dart.

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