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}

You can make a minimal project to reproduce your problem and paste code here. — Lebecca, Jun 25 '22 at 07:58

score 1 · Accepted Answer · answered Jun 25 '22 at 08:21

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

score 0 · Answer 2 · answered Jun 26 '22 at 08:14

0

I tried the SnackBar widget as a function. it worked!!!

answered Jun 26 '22 at 08:14

J P F 07

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6

then please remove this answer and mark the above answer as the correct answer – Kaleb Jul 03 '22 at 05:24

SnackBars in flutter only shows once

2 Answers2

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