这是一个艰难的过程。我将 Firebase 从 3.x 更新到 5.8，并将我的项目从 Swift 3 迁移到 Swift 4.2。现在我收到以下错误:

dyld: Symbol not found: _OBJC_CLASS_$_GTMMIMEDocument
  Referenced from: /Users/jarosz/Library/Developer/CoreSimulator/Devices/102264AE-4116-4108-B004-CAE6A422DF01/data/Containers/Bundle/Application/2E200B33-7FE4-4421-856E-3C1FE78A17B6/StarSnoopy DEV.app/Frameworks/GoogleAPIClientForREST.framework/GoogleAPIClientForREST
  Expected in: /Users/jarosz/Library/Developer/CoreSimulator/Devices/102264AE-4116-4108-B004-CAE6A422DF01/data/Containers/Bundle/Application/2E200B33-7FE4-4421-856E-3C1FE78A17B6/StarSnoopy DEV.app/Frameworks/GTMSessionFetcher.framework/GTMSessionFetcher
 in /Users/jarosz/Library/Developer/CoreSimulator/Devices/102264AE-4116-4108-B004-CAE6A422DF01/data/Containers/Bundle/Application/2E200B33-7FE4-4421-856E-3C1FE78A17B6/StarSnoopy DEV.app/Frameworks/GoogleAPIClientForREST.framework/GoogleAPIClientForREST

我试过 pod deintegrate Và pod install 都没有成功。

但这还不是全部。该项目相当庞大和复杂。例如，我们有一个使用 Firebase/Core、Firebase/Auth 和 Firebase/Database 的共享扩展。

这是播客文件:

# Uncomment this line to define a global platform for your project
platform :ios, '9.0'
# Uncomment this line if you're using Swift
use_frameworks!

source 'https://github.com/CocoaPods/Specs.git'
source 'https://www.x-root.info/gitlab/x-root/ios-libraries/xr-podspecs.git'

# ------------------ APP ------------------

def app_pods
    # Objc
    pod 'HockeySDK', '~> 5.1.2'
    pod 'SVProgressHUD', '~> 2.2.5'
    pod 'SDWebImage', '~> 4.4.2'
    pod 'TSMessages', '~> 0.9.12'
    pod 'MMDrawerController', '~> 0.6.0'
    pod 'iRate', '~> 1.12.2'

    #Swift
    pod 'SwiftyJSON', '~> 4.1.0'
    pod 'ReachabilitySwift', '~> 4.2.1'
    pod 'SwiftyUserDefaults', '~> 3.0.1'
    pod 'XRCore', '~> 4.2.0'
    pod 'FBSDKCoreKit', '= 4.36.0'
    pod 'FBSDKLoginKit', '= 4.36.0'
    pod 'Firebase/Core', '~> 5.8.0'
    pod 'Firebase/Auth', '~> 5.8.0'
    pod 'Firebase/Database', '~> 5.8.0'
    pod 'Firebase/Storage', '~> 5.8.0'
    pod 'Firebase/DynamicLinks', '~> 5.8.0'
    pod 'Firebase/Invites', '~> 5.8.0'
    pod 'Firebase/RemoteConfig', '~> 5.8.0'
    pod 'GoogleSignIn', '~> 4.2.0'
    pod 'Fabric', '~> 1.7.11'
    pod 'Crashlytics', '~> 3.10.7'
    pod 'KeychainAccess', '~> 3.1.1'
    pod 'TTGSnackbar', '~> 1.7.3'
    pod 'UIImageColors', '~> 2.0.1'
    pod 'MarqueeLabel/Swift', '~> 3.1.6'
    pod 'MTBBarcodeScanner', '~> 5.0.6'
    pod 'TGCameraViewController', '~> 2.2.8'
    pod 'MaterialComponents/FeatureHighlight', '~> 26.0'
    pod 'IQKeyboardManagerSwift', '~> 4.0.13'

kết thúc

    post_install do | installer |
        require 'fileutils'
        FileUtils.cp_r('Pods/Target Support Files/Pods-MyApp DEV/Pods-MyApp DEV-acknowledgements.plist', 'Wishlist/Settings.bundle/Acknowledgements.plist', :remove_destination => true)
        # avoid usage of UIApplication by GTMSessionFetcher in share extension
        installer.pods_project.targets.each do |target|
            target.build_configurations.each do |config|
                config.build_settings['GCC_PREPROCESSOR_DEFINITIONS'] = '$(inherited) GTM_BACKGROUND_UIAPPLICATION=0 $(inherited) GTM_BACKGROUND_TASK_FETCHING=0'
            kết thúc
        kết thúc
    kết thúc

target 'MyApp DEV' do
    app_pods
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target 'MyApp' do
    app_pods
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# ------------------ EXTENSION ------------------

def sharing_pods
    # Objc
    pod 'SDWebImage', '~> 4.4.2'

    #Swift
    pod 'SwiftyJSON', '~> 4.1.0'
    pod 'SwiftyUserDefaults', '~> 3.0.1'
    pod 'XRCore/Extension', '~> 4.2.0'
    pod 'Firebase/Core', '~> 5.8.0'
    pod 'Firebase/Auth', '~> 5.8.0'
    pod 'Firebase/Database', '~> 5.8.0'
    pod 'Fabric', '~> 1.7.11'
    pod 'Crashlytics', '~> 3.10.7'
    pod 'KeychainAccess', '~> 3.1.1'

kết thúc

target 'Sharing DEV' do
    sharing_pods
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target 'Sharing' do
    sharing_pods
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class ::Pod::Generator::Acknowledgements
def header_text
    if header_title.end_with?("Acknowledgements")
        "This app is using Open Source components which are provided under the following Open Source licence terms of the respective rights holder."
    khác
        ""
    kết thúc
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kết thúc

我知道这一定是搜索路径或模块配置的问题，但我想不出解决办法。

有什么线索吗？

câu trả lời hay nhất

已经有一段时间了，因为我们修复了它而忘记分享解决方案。查看存储库似乎简单明了。但不清楚为什么需要它，因为 Swift 4.2 或 Xcode 10.1。

解决方法:将此添加到您的 pod 文件中:pod 'GTMSessionFetcher', '~> 1.2'

关于ios - dyld : Symbol not found: _OBJC_CLASS_$_GTMMIMEDocument after migrating to Swift 4. 2 和 Firebase 5.8，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/52406387/