在Beta 0.3.2上使用Firebase-auth插件的Flutter的Xcode构建错误：不兼容的块指针

这涉及到 flutter 的 firebase-auth 插件 . 我在两台mac计算机上运行相同的代码 . 我刚刚对后者进行了全新安装，并在 FirebaseAuthPlugin.m 上获得了构建错误：不兼容的块指针

/Users/sergebesnard/Development/flutter/.pub-cache/hosted/pub.dartlang.org/
firebase_auth-0.5.9/ios/Classes/FirebaseAuthPlugin.m:69:53:
Incompatible block pointer types sending 'void (^)(FIRUser *__strong, NSError *__strong)' to parameter of type 'FIRAuthDataResultCallback _Nullable' (aka 'void (^)(FIRAuthDataResult * _Nullable __strong, NSError * _Nullable __strong)')

在我的笔记本电脑上，代码构建顺利，唯一的区别是测试版，这是 0.3.1 并且安装了android工具链 .

在iMac上（失败）：

flutter doctor -v
[✓] Flutter (Channel beta, v0.3.2, on Mac OS X 10.13.4 17E202, locale fr-BE)
    • Flutter version 0.3.2 at /Users/sergebesnard/Development/flutter
    • Framework revision 44b7e7d3f4 (3 weeks ago), 2018-04-20 01:02:44 -0700
    • Engine revision 09d05a3891
    • Dart version 2.0.0-dev.48.0.flutter-fe606f890b

[✗] Android toolchain - develop for Android devices
    ✗ Unable to locate Android SDK.
      Install Android Studio from: https://developer.android.com/studio/index.html
      On first launch it will assist you in installing the Android SDK components.
      (or visit https://flutter.io/setup/#android-setup for detailed instructions).
      If Android SDK has been installed to a custom location, set $ANDROID_HOME to that location.

[✓] iOS toolchain - develop for iOS devices (Xcode 9.3)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 9.3, Build version 9E145
    • ios-deploy 1.9.2
    • CocoaPods version 1.5.0

[✗] Android Studio (not installed)
    • Android Studio not found; download from https://developer.android.com/studio/index.html
      (or visit https://flutter.io/setup/#android-setup for detailed instructions).

[✓] VS Code (version 1.23.0)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Dart Code extension version 2.12.1

[✓] Connected devices (1 available)
    • iPhone X • 780C4B10-21A6-41E0-9A05-A6175FC20FA0 • ios • iOS 11.3 (simulator)

! Doctor found issues in 2 categories.

在macbook上（工作）：

[✓] Flutter (Channel beta, v0.3.1, on Mac OS X 10.13.4 17E199, locale fr-BE)
    • Flutter version 0.3.1 at /Users/sergebesnard/flutter
    • Framework revision 12bbaba9ae (3 weeks ago), 2018-04-19 23:36:15 -0700
    • Engine revision 09d05a3891
    • Dart version 2.0.0-dev.48.0.flutter-fe606f890b

[✓] Android toolchain - develop for Android devices (Android SDK 27.0.2)
    • Android SDK at /Users/sergebesnard/Library/Android/sdk
    • Android NDK location not configured (optional; useful for native profiling support)
    • Platform android-27, build-tools 27.0.2
    • Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-915-b08)
    • All Android licenses accepted.

[✓] iOS toolchain - develop for iOS devices (Xcode 9.3)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 9.3, Build version 9E145
    • ios-deploy 1.9.2
    • CocoaPods version 1.5.0

[✓] Android Studio (version 3.0)
    • Android Studio at /Applications/Android Studio.app/Contents
    • Flutter plugin version 20.0.1
    • Dart plugin version 171.4424
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-915-b08)

[✓] IntelliJ IDEA Community Edition (version 2017.3.4)
    • IntelliJ at /Applications/IntelliJ IDEA CE.app
    • Flutter plugin version 23.2.2
    • Dart plugin version 173.4700

[✓] VS Code (version 1.23.0)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Dart Code extension version 2.12.0

[✓] Connected devices (1 available)
    • iPhone X • 03F5FA6E-7332-46A2-9BF8-A1CACE723CC8 • ios • iOS 11.3 (simulator)

• No issues found!

Podfile是一样的：

# Uncomment this line to define a global platform for your project
# platform :ios, '9.0'

# CocoaPods analytics sends network stats synchronously affecting flutter build latency.
ENV['COCOAPODS_DISABLE_STATS'] = 'true'

def parse_KV_file(file, separator='=')
  file_abs_path = File.expand_path(file)
  if !File.exists? file_abs_path
    return [];
  end
  pods_ary = []
  skip_line_start_symbols = ["#", "/"]
  File.foreach(file_abs_path) { |line|
      next if skip_line_start_symbols.any? { |symbol| line =~ /^\s*#{symbol}/ }
      plugin = line.split(pattern=separator)
      if plugin.length == 2
        podname = plugin[0].strip()
        path = plugin[1].strip()
        podpath = File.expand_path("#{path}", file_abs_path)
        pods_ary.push({:name => podname, :path => podpath});
      else
        puts "Invalid plugin specification: #{line}"
      end
  }
  return pods_ary
end

target 'Runner' do
  use_frameworks!
  # Prepare symlinks folder. We use symlinks to avoid having Podfile.lock
  # referring to absolute paths on developers' machines.
  system('rm -rf Pods/.symlinks')
  system('mkdir -p Pods/.symlinks/plugins')

  # Flutter Pods
  generated_xcode_build_settings = parse_KV_file('./Flutter/Generated.xcconfig')
  if generated_xcode_build_settings.empty?
    puts "Generated.xcconfig must exist. If you're running pod install manually, make sure flutter packages get is executed first."
  end
  generated_xcode_build_settings.map { |p|
    if p[:name] == 'FLUTTER_FRAMEWORK_DIR'
      symlink = File.join('Pods', '.symlinks', 'flutter')
      File.symlink(File.dirname(p[:path]), symlink)
      pod 'Flutter', :path => File.join(symlink, File.basename(p[:path]))
    end
  }

  # Plugin Pods
  plugin_pods = parse_KV_file('../.flutter-plugins')
  plugin_pods.map { |p|
    symlink = File.join('Pods', '.symlinks', 'plugins', p[:name])
    File.symlink(p[:path], symlink)
    pod p[:name], :path => File.join(symlink, 'ios')
  }
end

post_install do |installer|
  installer.pods_project.targets.each do |target|
    target.build_configurations.each do |config|
      config.build_settings['ENABLE_BITCODE'] = 'NO'
    end
  end
end

在这两种情况下，pod版本都是1.5.0 .

Pubspec.yaml：

dependencies:
  flutter:
    sdk: flutter
  google_sign_in: "^3.0.2"
  firebase_analytics: "^0.3.3"
  firebase_auth: "^0.5.5"
  firebase_database: "^0.4.6"
  firebase_storage: "^0.2.6"
  cloud_firestore: "^0.6.3"
  #firebase_messaging: "^0.2.4"  removed due to bug in android

  simple_permissions: "^0.1.2"

  diff_match_patch : 0.2.1
  path_provider: "^0.4.0"
  intl: "^0.15.6"
  #timeago: 1.2.0
  #side_header_list_view: "^0.0.2"
  uuid: "^1.0.0"
  #location: "^1.2.0" causes a problem in android

  robyn_nlp:
    path: ../robyn-nlp

  async_message_queue_controller:
    path: ../AsyncMessageQueueProcessor

  oscillo_wave_painter:
    path: ../oscillo-wave-painter

  #medcorder_audio:
  #  path: ../flutter_audio # super important, because the original doesn't work

  voice_recorder:
    path: ../voice_recorder

  # The following adds the Cupertino Icons font to your application.
  # Use with the CupertinoIcons class for iOS style icons.
  cupertino_icons: ^0.1.0

dev_dependencies:
  flutter_test:
    sdk: flutter


# For information on the generic Dart part of this file, see the
# following page: https://www.dartlang.org/tools/pub/pubspec

# The following section is specific to Flutter.
flutter:

  # The following line ensures that the Material Icons font is
  # included with your application, so that you can use the icons in
  # the material Icons class.
  uses-material-design: true

  # To add assets to your application, add an assets section, like this:
  assets:
  - assets/logo-solo.png
  - assets/banner.png

坦率地说，我宁愿不在我的工作设置上测试升级颤振sdk，我仍然需要处理那些东西......

我不知道这是否有用，但在安装过程中，我遇到了在XCODE上安装颤动的问题，因为当时XCODE还没有完全设置好 . 颤动的医生确实要求我安装包六，并因为python @ 2版本中的冲突而出现问题，所以我强制通过brew python @ 2卸载并重新安装它，然后可以通过pip install six安装

如果这是原因，我将不得不重新安装XCODE＆Flutter . 希望不是这样的 .

谢谢塞尔