I find a bug when i using

[mahanpyk]

I a musk for iban number and it works perfectly when entering values ​​but it does not work properly and does not clear when we use backspase
The pattern I used is this:
####-####-####-####-####-####

I test on flutter 2.2 and 2.0

I have tested both versions 1.2.1 and 2.0.0-nullsafety.2 and 2.2.0 and 2.2.1.

[marcglasberg]

It's really not working anymore. It used to work well, but does not anymore.

I have tested both versions 1.2.1 and 2.0.0-nullsafety.2.

It's possible a bug was introduced recently, but also the TextField widget itself may have changed something for Flutter 2 that's affecting this widget.

[subinsv]

We had a similar issue. Not sure this will help.

Converting the parent widget to stateful widget and declaring the MaskTextInputFormatter as an final variable seems to solve most of the issues related to backspace and random typing issues.

it would be great if somebody can confirm this.

I am on flutter 2.2

class _MyWidgetState extends State<MyWidget> {
final MaskTextInputFormatter mask = MaskTextInputFormatter(mask: '####-####-####-####-####-####');

build() {
//use the above created mask
}
}

[yisusparkr]

I faced the same issue.

If you want to format an input of numbers you can fix this bug adding the keyboardType property to the TextFormField or TextField.

final maskFormatter = new MaskTextInputFormatter(mask: '+## (###) ### ####', filter: { "#": RegExp(r'[0-9]') },);

TextFormField(
    keyboardType: TextInputType.phone,
    inputFormatters: [maskFormatter],
),

I tried too formating an input of text but in that case the bug persist. I'm using Flutter 2.2.1

[mahanpyk]

I used a custom keyboard and did so by calling its converter method. At first I thought it might be because of the custom field text, and then I used the library on another project as recommended, but it was still the same problem.

[bsbilal]

that error cause could be it 'setstate' calls in 'onChanged(s)' method. check that

[mahanpyk]

that error cause could be it 'setstate' calls in 'onChanged(s)' method. check that

it's true
But I use state management Getx and don't use setState. I debugged this and the callback is wrong