[TextEditingController] listeners are triggered inconsistently

[sweatfryash]

• at andriod

1. type 1
   2.delete it

console shows:
1
(space)

• at ios

1. type 1
2. delete it

console shows:
1
1
(space)

Maybe I am not understood, so you can see this simple demo about that problem
demo

sample

import 'package:flutter/material.dart';

class MyHomePage extends StatefulWidget{
  @override
  State<StatefulWidget> createState() {
    return MyHomePageState();
  }

}

class MyHomePageState extends State<MyHomePage>{
  //create a controller for TextField
  TextEditingController _controller = TextEditingController();


  @override
  void initState() {
    super.initState();
    //add a listener
    _controller.addListener((){
      if(_controller.text.isEmpty){
          print('++++++++ now （_controller.text.isEmpty） is TRUE ++++++++');
          print(_controller.text);
          print(_controller.text.runtimeType);
      }else{
          print('-------- now （_controller.text.isEmpty） is FALSE ---------');
          print(_controller.text);
          print(_controller.text.runtimeType);
      }
      setState(() {});
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: (Text('Demo')),
      ),
      body: Center(
        child: TextField(
          controller: _controller,
          decoration: InputDecoration(
            hintText: 'type and delete and look the console'
          ),
        ),
      ),
    );
  }
}

[VladyslavBondarenko]

Hi @sweatfryash
It seems to be fixed, I checked with dev v1.15.18, the behaviour is as intended, as you described for android.
Closing, if you disagree please write in the comments and I will reopen it
Thank you

[lock]

This thread has been automatically locked since there has not been any recent activity after it was closed. If you are still experiencing a similar issue, please open a new bug, including the output of flutter doctor -v and a minimal reproduction of the issue.

[AlexV525]

This issue is reproduced in 2.2.3. Android works fine but iOS reports twice change, see screenshots for how it changed during the deletion:

On Android (works fine):

Selection range is consistent when deleting the character.

On iOS (not working well, selection splitted):

• First start/baseOffset fields were reduced as the key was pressed, but the character was not deleted at this time, which means it got selected.
  

• And the remove process eventually.
  

[loic-hamdi]

This still exists in Flutter Channel stable, 3.0.5

It seems that the listener is triggered 2 times when you delete a character

[semsturgut-toast]

I can confirm that this problem is still happening in Flutter 3.3.4 • channel stable

[akurnaz]

Same issue in Flutter 3.7.3 • channel stable

[kamami]

Issue still exists in Flutter 3.10.1 • channel stable

[adityanahak-cred]

do we have any update on this?