How To Easily Use Flutter GestureDetector OnTap

In this Flutter post, we will practically understand how to use Flutter gestureDetector onTap in Flutter app. We will discuss what Flutter gestureDetector onTap is, its usage and how to properly use in in our app. After reading this post, I am sure you will be able to easily use it in your own Flutter applications.

So let’s get right into implementing Flutter gestureDetector onTap using a proper Flutter example.

Outline

What is Flutter GestureDetector OnTap?
Implementing Flutter GestureDetector OnTap (Easy Example)
Flutter GestureDetector OnTap Implementation Source Code
Conclusion

What is Flutter GestureDetector OnTap?

It is used to make Flutter widgets clickable, so we are able to specify any actions after that Flutter widget is clicked. Let’s understand the implementation of Flutter gestureDetector onTap with the help of a practical Flutter code example.

Implementing Flutter GestureDetector OnTap (Easy Example)

To make any Flutter widget clickable, we have to wrap it with Flutter gestureDetector class. For demonstration, we will use a Flutter container and give it some height, width, a background color and a child Flutter text widget just to make it look good. See below code:

Container(
          height: 60,
          width: 150,
          color: Colors.green,
          alignment: Alignment.center,
          child: Text(
            'Click here',
            style: TextStyle(color: Colors.white, fontWeight: FontWeight.bold),
          ))

You can see that we have a container on our screen.

See below steps to make the container clickable.

For that, we have to wrap this container with a Flutter gestureDetector widget class.
We then have to use the onTap constructor of that class which takes a function. We can specify any action in the body of that function.
For demonstration, we will specify a Flutter snackbar widget which will be shown when the container is clicked. See below code:

GestureDetector(
        onTap: () {
          ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text('Container is clicked')));
        },
        child: Container(
            height: 60,
            width: 150,
            color: Colors.green,
            alignment: Alignment.center,
            child: Text(
              'Click here',
              style:
                  TextStyle(color: Colors.white, fontWeight: FontWeight.bold),
            )),
      )

We have clicked the container and as a result, the snackbar was shown as seen in the above image.

So we have successfully implemented Flutter gestureDetector onTap in our Flutter app. You can easily wrap an icon, text widget etc. by following the above mentioned steps.

Don’t hesitate to ask if you have any questions related to Flutter gestureDetector onTap. I would be happy to answer all.

Below section includes the complete source code for the above implemented Flutter gestureDetector onTap.

Flutter GestureDetector OnTap Implementation Source Code

flutter container widget

flutter gesturedetector ontap

import 'package:flutter/material.dart';
void main() {
  runApp(const MyApp());
}
class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      home: Homepage(),
    );
  }
}
class Homepage extends StatefulWidget {
  @override
  State<Homepage> createState() => _HomepageState();
}
class _HomepageState extends State<Homepage> {
  @override
  Widget build(BuildContext context) {
    return SafeArea(
        child: Scaffold(
            body: Center(
      child: GestureDetector(
        onTap: () {
          ScaffoldMessenger.of(context)
              .showSnackBar(SnackBar(content: Text('Container is clicked')));
        },
        child: Container(
            height: 60,
            width: 150,
            color: Colors.green,
            alignment: Alignment.center,
            child: Text(
              'Click here',
              style:
                  TextStyle(color: Colors.white, fontWeight: FontWeight.bold),
            )),
      ),
    )));
  }
}

Conclusion

To conclude this post, hope you now have a clear practical idea of how to use Flutter gestureDetector onTap in Flutter apps. Your feedback would be well appreciated.

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