How to take a screenshot of the current widget - Flutter

Question

I need to take a screenshot of the current screen or widget and I need to write it into a file.

Answer 1

This answer applies if you want to take a screenshot of the widget outside of your dart code.

To take a screenshot of your widget, make sure your dart file has a void main() async { function.

From the terminal, go to your app folder, and run your widget, like this:

flutter run lib/my_test.dart

Or if you want to run your entire app, just run:

flutter run

Then your widget will start.

Press the s key to print a screenshot.

You will see a message like this:

Taking screenshot for SM S757BL... 1,580ms Screenshot written to flutter_01.png (38kB).

The image is saved in your app folder.