Dart file example

Flutter has an inbuilt library called path. We can use it to find out the extension easily.

When you need to open DART files, start by double-clicking it.

Write to a file To write a string to a file, use the writeAsString method : import ‘dart:io’; void main() async { final filename = ‘file. txt’; var file = await File(filename). writeAsString(‘some content’); // Do something with the file. }