permission_handler camera always isDenied( edit ios/Podfile )

 post_install do |installer|

  installer.pods_project.targets.each do |target|
    flutter_additional_ios_build_settings(target)

    target.build_configurations.each do |config|
          xcconfig_path = config.base_configuration_reference.real_path
          xcconfig = File.read(xcconfig_path)
          xcconfig_mod = xcconfig.gsub(/DT_TOOLCHAIN_DIR/, "TOOLCHAIN_DIR")
          File.open(xcconfig_path, "w") { |file| file << xcconfig_mod }

          config.build_settings['GCC_PREPROCESSOR_DEFINITIONS'] ||= [
              '$(inherited)',
              ## dart: PermissionGroup.camera
              'PERMISSION_CAMERA=1',
            ]
      end
  end
end