Flutter GestureDetector

Haider Ali

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Complete Flutter Guide

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May 20, 2024

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import 'package:flutter/material.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {

    return MaterialApp(
      debugShowCheckedModeBanner: false,
      title: 'Flutter Demo',
      theme: ThemeData(
        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
        useMaterial3: true,
      ),
      home: const MyHomePage(title: 'GestureDetector Demo'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({super.key, required this.title});
  final String title;

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  int counter=0;
   @override
  Widget build(BuildContext context)  {

     return Scaffold(
         appBar: AppBar(
           backgroundColor: Theme.of(context).colorScheme.inversePrimary,
           title: Text(widget.title),
         ),
         body: GestureDetector(
           onTap: pressed,
           child: Column(
             //mainAxisAlignment: MainAxisAlignment.start,
             children: [
               Container(
                 alignment: Alignment.center,
                 padding: EdgeInsets.all(20),
                 color: Colors.blue,
                  child: Text("Click Me!",),
               ),
               Text("Clicked $counter times.")
             ],
           )
         )
     );
   }
   void pressed() {
     setState(() {
       counter++;
     });
   }
}

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