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assalamualaikum well in this tutorial well see how to make radio buttons like this and then well also see how to save the value of the selected button so that you can use it later we will do that using getx package well to do this first i have created a controller here and i call it buttoncontroller.dart and then i have extended getx controller using this getx package after this i have created a variable string variable and the default value is home delivery because we are going to work on buttons like this where you can have a different value for each button and we want to know which value has been selected or whether the value has been changed so for us the default value is the home delivery and we also set a getter for this and we created a method called set order type so this is the method that would get called and because this method would get called so it will change the value so whatever the value being selected that would be passed to this parame