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import 'package:flutter/material.dart';

void main() => runApp(MyWidget());

class MyWidget extends StatefulWidget {
  @override
  State<MyWidget> createState() => _MyWidgetState();
}

class _MyWidgetState extends State<MyWidget> {

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import 'package:flutter/material.dart';

void main() => runApp(MyWidget());

class MyWidget extends StatefulWidget {
  @override
  State<MyWidget> createState() => _MyWidgetState();
}

class _MyWidgetState extends State<MyWidget> {

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 String input = '';

  void display(String value) {
    setState(() {
      input = value;
    });
  }

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  int counter = 0;

  void increment() {
    setState(() {
      counter += 1;
    });
  }

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 bool trigger = false;
 
   void toggole() {
    setState(() {
      trigger = !trigger;
    });
  }

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ElevatedButton(
              onPressed: () {
                toggole();
              },
              child: Text(
                counter.toString(),
              ),
            )

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TextField(
                  textAlign: TextAlign.center,
                  controller: alpa,
                ),

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TextField(

                textDirection: TextDirection.rtl,
                  controller: alpa,
                ),

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TextField(
                  style: TextStyle(
                    color: Colors.grey,
                    fontWeight: FontWeight.w300,
                    letterSpacing: 1,
                  ),
                  controller: alpa,
                ),

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TextField(
                  onTap: () => {increment()},
                  controller: alpa,
                ),