如何在VSCode/flutter中升级软件包？

Question

我在flutter项目中使用VS Code。我刚刚编辑了pubspec.yaml以指向包的更高版本，它会自动运行'flutter packages get‘。在我的'/development//flutter/.pub-cache/hosted/pub.dartlang.org‘目录中，我可以看到这两个版本。但当我编译时，它看起来仍在使用旧版本。我尝试了各种方法，比如'flutter packages upgrade'，'flutter clean'，等等，但都没有效果。查看两个包版本的源代码，我可以看到我希望在新版本中进行的更改。我如何指向新的包？谢谢。

更新：

没有更新的是“以太”包。我使用了3.0.0版本(方法需要2个参数)，然后切换到3.1.0版本(方法需要3个参数)。但是使用3 arg调用进行编译会因为参数计数不正确而停止：

client.admin.personalSendTransaction(BigInt.parse(currentAddress), currentPassword,{});

[dart] Too many positional arguments: 2 expected, but 3 found. [extra_positional_arguments_could_be_named]

然而，将鼠标悬停在方法调用上确实表明它需要3个参数：

personalSendTransaction(BigInt address, String passphrase, {BigInt to, BigInt data, int gas, int gasPrice, int value, int nonce, int condition, bool conditionIsTimestamp: false}) → Future<BigInt>

pubspec.yaml：

    dependencies:
  flutter:
    sdk: flutter

  # The following adds the Cupertino Icons font to your application.
  # Use with the CupertinoIcons class for iOS style icons.
  cupertino_icons: ^0.1.2

  # Get package(s) for talking to ethereum node
  # web3dart: '>=0.3.0'
  ethereum: ^3.1.0

  # read barcodes and QR codes
  barcode_scan: ^0.0.3

  # Generate a QR code
  qr: ^1.0.1

  # Display as actual symbol
  qr_flutter: ^1.1.5

dev_dependencies:
  flutter_test:
    sdk: flutter

在pubspec.lock中：

  ethereum:
    dependency: "direct main"
    description:
      name: ethereum
      url: "https://pub.dartlang.org"
    source: hosted
    version: "3.1.0"

版本3.1.0是我想要使用的版本。

运行'flutter packages upgrade resolved‘会产生以下结果：

[Gregorys-iMac]:(gkd) ~/Programs/wine_track $ flutter packages upgrade resolved
Running "flutter packages upgrade" in ....                   2.7s

在包缓存中，我有两个：

/Users/gkd/development//flutter/.pub-cache/hosted/pub.dartlang.org/ethereum-3.0.0/lib/src/api/ethereum_api_admin.dart

/Users/gkd/development//flutter/.pub-cache/hosted/pub.dartlang.org/ethereum-3.1.0/lib/src/api/ethereum_api_admin.dart

Answer 1

您可以简单地在项目中运行flutter packages upgrade来升级所有包。此功能在flutter版本1.17中可用

Answer 2

flutter pub升级版--主要版本

Answer 3

我已经为此创建了一个python3脚本，您可以使用。此脚本仅生成最新的包名称和版本，必须复制并粘贴到pubspec.yaml文件中。

import yaml
import requests
from lxml import etree
from io import StringIO


def getNewVersion(pkg_name):
    url = f'https://pub.dev/packages/{pkg_name}'
    with requests.get(url) as req:
        doc = etree.parse(StringIO(req.text), etree.HTMLParser()).getroot()
        title = doc.xpath('//h2[@class="title"]')[0].text.strip()
        return '^' + (title.split(' ')[1])


if __name__ == "__main__":
    filename = 'pubspec.yaml'
    new_map = None
    with open(filename, 'r') as _f:
        docs = yaml.load(_f, Loader=yaml.FullLoader)
        deps = docs['dependencies']
        for package_name, old_version in deps.items():
            if package_name == 'flutter':
                continue
            last_version = getNewVersion(package_name)
            print(f'{package_name}: {last_version}')