flutter pub add random_string根據套件公開資料產生的選型評估，僅供參考。
一個簡單的 Flutter/Dart 套件，使用 Dart 內建的 Random 類來產生隨機 ASCII 字串。它提供了一個易於使用的 API，可建立指定長度的隨機字串，非常適合用於產生暫時性金鑰、密碼或識別碼等情境。此套件輕量且與平台無關，支援所有主要平台，包含 Android、iOS、Web、macOS、Windows 與 Linux。除了核心 Dart SDK 外，不需要任何外部相依性。
以下為關聯原始碼儲存庫的 README 原文快照，最新內容請造訪原始碼儲存庫。
Simple library for generating random ascii strings.
While this package provides randomBetween for convenience, as the name implies, the design goal of this package
is for random generation of ascii strings, particularly for testing and not for cryptographic purposes.
With that stated, consider an alternative means of random number generation if your needs fall outside these goals
and limitations.
A simple usage example:
import 'package:random_string/random_string.dart';
import 'dart:math' show Random;
main() {
print(randomBetween(10, 20)); // some integer between 10 and 20 where 0 <= min <= max <= 999999999999999
print(randomNumeric(4)); // sequence of 4 random numbers i.e. 3259
print(randomString(10)); // random sequence of 10 characters i.e. e~f93(4l-
print(randomAlpha(5)); // random sequence of 5 alpha characters i.e. aRztC
print(randomAlphaNumeric(10)); // random sequence of 10 alpha numeric i.e. aRztC1y32B
var r = Random.secure();
print(randomBetween(10, 20, provider: CoreRandomProvider.from(r))); // You can use a provider from Random.
print(randomBetween(10, 20, provider: _Provider())); // Or you can implement your own.
}
class _Provider with AbstractRandomProvider {
_Provider();
double nextDouble() => 0.5;
}
Please file feature requests and bugs at the issue tracker.