Flutter修改应用版本号和获取版本号

设置版本号

pubspec.yaml

name: translate_deepl
description: A new Flutter project.

# The following line prevents the package from being accidentally published to
# pub.dev using `flutter pub publish`. This is preferred for private packages.
publish_to: 'none' # Remove this line if you wish to publish to pub.dev

# The following defines the version and build number for your application.
# A version number is three numbers separated by dots, like 1.2.43
# followed by an optional build number separated by a +.
# Both the version and the builder number may be overridden in flutter
# build by specifying --build-name and --build-number, respectively.
# In Android, build-name is used as versionName while build-number used as versionCode.
# Read more about Android versioning at https://developer.android.com/studio/publish/versioning
# In iOS, build-name is used as CFBundleShortVersionString while build-number used as CFBundleVersion.
# Read more about iOS versioning at
# https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
version: 1.0.0+1

获取版本号

https://pub.dev/packages/package_info_plus/example

// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// ignore_for_file: public_member_api_docs

import 'dart:async';

import 'package:flutter/material.dart';
import 'package:package_info_plus/package_info_plus.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'PackageInfo Demo',
      theme: ThemeData(primarySwatch: Colors.blue),
      home: const MyHomePage(title: 'PackageInfo example app'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({Key? key, this.title}) : super(key: key);

  final String? title;

  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  PackageInfo _packageInfo = PackageInfo(
    appName: 'Unknown',
    packageName: 'Unknown',
    version: 'Unknown',
    buildNumber: 'Unknown',
    buildSignature: 'Unknown',
  );

  @override
  void initState() {
    super.initState();
    _initPackageInfo();
  }

  Future<void> _initPackageInfo() async {
    final info = await PackageInfo.fromPlatform();
    setState(() {
      _packageInfo = info;
    });
  }

  Widget _infoTile(String title, String subtitle) {
    return ListTile(
      title: Text(title),
      subtitle: Text(subtitle.isEmpty ? 'Not set' : subtitle),
    );
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title!),
      ),
      body: Column(
        mainAxisAlignment: MainAxisAlignment.center,
        children: <Widget>[
          _infoTile('App name', _packageInfo.appName),
          _infoTile('Package name', _packageInfo.packageName),
          _infoTile('App version', _packageInfo.version),
          _infoTile('Build number', _packageInfo.buildNumber),
          _infoTile('Build signature', _packageInfo.buildSignature),
        ],
      ),
    );
  }
}