SnackBars in flutter only shows once

Question

I want to give an error warning if the input given in the text field is not correct (like the field only accepts integer and not characters or strings). I have used Get.snackbar for giving the error warning . but it show only once after opening the application. How to solve this issue {Thanks in advance}

Answer 1

first create a title for you snackbar as a string

String? sbTitle;

then you can create a function which can show snackBar every time you call it

void showSnackBar(BuildContext context) {
  final scaffold = ScaffoldMessenger.of(context);
  scaffold.showSnackBar(
    SnackBar(
      content: Text(sbTitle!),
      action: SnackBarAction(
          label: 'Ok', onPressed: scaffold.hideCurrentSnackBar),
    ),
  );
}

and finally every time you want to show and error just set the title to your error code and pass in the function like this

 sbTitle = "Invalid input";
 showSnackBar(context);

this will save you so much time cause you dont have to build snackbar every time you want to show snackbar