To use the dart:io library in your code:
Read moreHow do I import a package to flutter?
Adding a package dependency to an app
Read moreWhat is Flutter package?
In Flutter, Dart organizes and shares a set of functionality through a package . Flutter always supports shared packages, which is contributed by other developers to the Flutter and Dart ecosystem. The packages allow us to build the app without having to develop everything from scratch.
Read moreWhat is the material library that contains Flutter widgets implementing Material Design?
Flutter widgets implementing Material Design. To use, import package:flutter/material. dart .
Read moreHow do I create a package in Flutter?
Developing Dart packages
Read moreHow do I import a package into flutter?
Adding a package dependency to an app
Read moreHow do I add Dart package to flutter?
Developing Dart packages
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