RadioButton Radio Button is a material widget that is used as an option button where the user can select only one option from a group of options. We can use it in cases where the user has to select a single value from a set of values. If one radio button is selected then we cannot select the other radio buttons in the same group. we are taking an example of gender selection. title : It is used to specify the radio button label. groupValue : It is used to specify the currently selected item for the radio button group. value : It specifies the backhand value, which is represented by a radio button. onChanged : It will be called whenever the user selects the radio button. ThemeData : You want to change the theme and give primary color and swatch color as a theme it will be used in the whole application. activeColor : When you select the radio button at that time color shows which is defined in the activeColor property. tileColor : This property ...