Flutter 开发环境配置

因为参加的几个比赛都要求开发 APP，为了实现跨端开发，因此盯上了 Flutter，但是在配置 Flutter 开发环境的时候碰上了几个小问题，在运行flutter doctor的时候主要出现下面的错误。

第一个：Windows Version (Unable to confirm if installed Windows version is 10 or greater)
解决方法：参考网址
1、把该目录下的文件替换为下面的代码（它与原点相同，但进行了一些调整）：（FLUTTER-SDK-DIR）\packages\flutter_tools\lib\src\windows\windows_version_validator.dart

// Copyright 2014 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

import 'package:process/process.dart';

import '../base/io.dart';
import '../doctor_validator.dart';

// FIX #1 - Remove everything from line 10 to 20 in original source code.

/// Validator for supported Windows host machine operating system version.
class WindowsVersionValidator extends DoctorValidator {
  const WindowsVersionValidator({required ProcessManager processManager})
      : _processManager = processManager,
        super('Windows Version');

  final ProcessManager _processManager;

  @override
  Future<ValidationResult> validate() async {

// FIX #2 - Replace 'systeminfo' by 'ver' command
    final ProcessResult result =
        await _processManager.run(<String>['ver'], runInShell: true);

    if (result.exitCode != 0) {
      return const ValidationResult(
        ValidationType.missing,
        <ValidationMessage>[],
        statusInfo: 'Exit status from running `systeminfo` was unsuccessful',
      );
    }

    final String resultStdout = result.stdout as String;

// FIX #3 - Remove brackets from output
    final String resultAdjusted = resultStdout.replaceAll('[','').replaceAll(']','');

// FIX #4 - Split the output at spaces, and get Windows version at position 3.
//          Split again at dots and get the major version at position 0.
//          Cast the output to int.
    final int winver = int.parse(resultAdjusted.split(' ').elementAt(3).split('.').elementAt(0));

    // Use the string split method to extract the major version
    // and check against the [kUnsupportedVersions] list
    final ValidationType windowsVersionStatus;
    final String statusInfo;

// FIX #5 - Check if Windows major version is greater than 10.
//          Succeeds if true.
    if (winver >= 10) {
      windowsVersionStatus = ValidationType.installed;
      statusInfo = 'Installed version of Windows is version 10 or higher';
    } else {
      windowsVersionStatus = ValidationType.missing;
      statusInfo =
          'Unable to confirm if installed Windows version is 10 or greater';
    }

    return ValidationResult(
      windowsVersionStatus,
      const <ValidationMessage>[],
      statusInfo: statusInfo,
    );
  }
}

2、删除文件。（FLUTTER-SDK-DIR）\bin\cache\flutter_tools.stamp/
3、再跑一次flutter doctor。
第二个：Android toolchain - develop for Android devices (Android SDK version 33.0.2) X cmdline-tools component is missing（截图时已解决）
解决方法：因为电脑上已经安装了 Android Studio，因此只需要在 Android Studio 当中打开 SDK Manager，安装Android SDK Command-line Tools 即可。