How to take integer input from user in dart-CodePudding

i am new in dart and just want to know how to take integer input from user in dart with null safety. i found out a way to take number input from dart which is:

String? chossenNumber =  stdin. readLineSync();
   if(chossenNumber !=null)
   {
     int number = int.parse(chossenNumber);
   }

but i am unable to use number variable outside of the scope. Please tell me a way to solve this issue.

CodePudding user response：

You can define the variable at the top of the class and initialize it here so you will be able to use it everywhere in the class

CodePudding user response：

The solution of it very simple just take input of number as String i.e

String? chossenNumber =  stdin. readLineSync();

and when you want to use this variable parse it to the 'int' i.e

if(int.parse(chossenNumber) <100)
{
print("Your Statement");
}

CodePudding user response：

From where you are fetching the string from User? Is it text field or any other type of widget?