CastError (Null check operator used on a null value) with optional parameters

Question

I have a method with optional parameters

 void method1(String text,
      {String? text2}) {
    
    method2(text, text2: text2!);
  }

Method1 calls another method with optional parameters

 void method2(String text,
      {String? text2 = 'helloWorld'}) {
    
    print(text);
    print(text2!);
  }

when I pass a null value into text2 when I call method1, I have an error CastError (Null check operator used on a null value) when method1 try to call method2

Should I add a condition in method1 like :

 void method1(String text,
      {String? text2}) {
    if(text2 == null)
    {
       method2(text);
    }
    else
    {
       method2(text, text2: text2!);
    }

  }

or something easier.

Context: flutter 2.10.4

Thanks

Answer 1

It's easier to use ternary operation like:

void method1(String text, {String? text2}) {
   text2 != null ? method2(text, text2: text2) : method2(text);
}