Flutter Mobile Development · Lesson

Asynchronous Programming with Futures and async/await

Handle delayed operations in Dart and Flutter using Futures, async, await, and error handling.

Why Async?

Apps fetch data, read files, and wait on timers. Blocking would freeze the UI, so Dart uses asynchronous programming to stay responsive.

A Future is a value that’ll arrive later. It’s either uncompleted, completed with a value, or completed with an error.

Future<String> fetchName() {
  return Future.delayed(
    Duration(seconds: 1),
    () => "Ada",
  );
}