xcode - Flutter:类型 'UIApplication' 没有成员 'openSettingsURLString'

Question

我正在尝试让 geolocator 2.1.0 插件与我的 ios xcode 项目一起工作，并在我运行 pod install 后出现以下 2 个错误

类型“UIApplication”没有成员“openSettingsURLString”和“OpenExternalURLOptionsKey”不是“UIApplication”的成员类型

采取的步骤。

1. 我打开一个新的 Flutter 项目(无论是否选中“Swift Support”都会出错)-获取默认应用。

2. 仅更新我的 pubspec.yaml 文件 - geolocator : ^2.1.0

3. 运行“flutter pacakges get”和“pod install”。所有库都显示在 AndroidStudio 和 XCode 9.2 中。

希望我遗漏了一些简单的东西。感谢高级帮助。

Pod 文件看起来像这样

(我已经用“config.build_settings['SWIFT_VERSION'] = '4.1''更新了文件)。

# 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
  # Prepare symlinks folder. We use symlinks to avoid having Podfile.lock
  # referring to absolute paths on developers' machines.
  system('rm -rf .symlinks')
  system('mkdir -p .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('.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('.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'
      config.build_settings['SWIFT_VERSION'] = '4.1'
    end
  end
end

Answer 1

在 (YOUR_PROJECT)/ios/Podfile 的目标 Runner 中添加 use_frameworks!。

target 'Runner' do
  use_frameworks!  # required by Geolocator

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

旧版本的地理定位器，例如 ^1.6.3，需要将 SWIFT_VERSION 设置为 4.0 或 4.1.

但是geolocator版本2.1.0，使用permission_handler版本2.1.1，需要SWIFT_VERSION 4.2。

post_install do |installer|
  installer.pods_project.targets.each do |target|
    target.build_configurations.each do |config|
      config.build_settings['SWIFT_VERSION'] = '4.2'  # required by Geolocator
      config.build_settings['ENABLE_BITCODE'] = 'NO'
    end
  end
end

我能够在我的应用程序中成功构建和使用 geolocator 版本 2.1.0，使用 flutter 0.11.9 和 Xcode 10.1.