从Flutter启动Swift页面遇Xcode未定义符号错误求助

问题场景 #

尝试从Flutter项目中打开集成了FirebaseAnalytics的Swift页面时，编译报错，具体错误信息如下：

Error (Xcode): Undefined symbol: _$s19FirebaseSharedSwift0A11DataDecoderC0D16DecodingStrategyO6base64yA2EmFWC
Error (Xcode): Undefined symbol: _$s19FirebaseSharedSwift0A11DataDecoderC19KeyDecodingStrategyO14useDefaultKeysyA2EmFWC
Error (Xcode): Undefined symbol: _$s19FirebaseSharedSwift0A11DataDecoderC19keyDecodingStrategyAC03KeygH0OvsTj
Error (Xcode): Undefined symbol: _$s19FirebaseSharedSwift0A11DataDecoderC20DateDecodingStrategyO6customyAE10Foundation0F0Vs0E0_pKccAEmFWC
Error (Xcode): Undefined symbol: _$s19FirebaseSharedSwift0A11DataDecoderC20dataDecodingStrategyAC0dgH0OvsTj
Error (Xcode): Undefined symbol: _$s19FirebaseSharedSwift0A11DataDecoderC20dateDecodingStrategyAC04DategH0OvsTj
Error (Xcode): Undefined symbol: _$s19FirebaseSharedSwift0A11DataDecoderC23passthroughTypeResolverAA026StructureCodingPassthroughgH0_pXpvsTj
Error (Xcode): Undefined symbol: _$s19FirebaseSharedSwift0A11DataDecoderC34NonConformingFloatDecodingStrategyO5throwyA2EmFWC
Error (Xcode): Undefined symbol: _$s19FirebaseSharedSwift0A11DataDecoderC34nonConformingFloatDecodingStrategyAC03NonghiJ0OvsTj
Error (Xcode): Undefined symbol: _$s19FirebaseSharedSwift0A11DataDecoderC6decode_4fromxxm_yptKSeRzlFTj
Error (Xcode): Undefined symbol: _$s19FirebaseSharedSwift0A11DataDecoderC8userInfoSDys010CodingUserG3KeyVypGvsTj
Error (Xcode): Undefined symbol: _$s19FirebaseSharedSwift0A11DataEncoderC0D16EncodingStrategyO6base64yA2EmFWC
Error (Xcode): Undefined symbol: _$s19FirebaseSharedSwift0A11DataEncoderC19KeyEncodingStrategyO14useDefaultKeysyA2EmFWC
Error (Xcode): Undefined symbol: _$s19FirebaseSharedSwift0A11DataEncoderC19keyEncodingStrategyAC03KeygH0OvsTj
Error (Xcode): Undefined symbol: _$s19FirebaseSharedSwift0A11DataEncoderC20DateEncodingStrategyO6customyAEy10Foundation0F0V_s0E0_ptKccAEmFWC
Error (Xcode): Undefined symbol: _$s19FirebaseSharedSwift0A11DataEncoderC20dataEncodingStrategyAC0dgH0OvsTj

解决步骤 #

• 统一Firebase依赖版本：确保Flutter端pubspec.yaml中的firebase_core、firebase_analytics版本，与iOS端Podfile里Firebase/Analytics、Firebase/Core等依赖的版本完全一致，版本不兼容是这类错误的主要诱因。
• 重新安装iOS依赖：
  1. 进入项目iOS目录：cd ios
  2. 删除旧依赖文件：rm -rf Podfile.lock Pods
  3. 清理Pod集成残留：pod deintegrate
  4. 更新仓库并重新安装：pod install --repo-update
• 调整Swift编译配置：
  1. 用Xcode打开iOS项目，进入Target的Build Settings页面
  2. 将Build Libraries for Distribution设置为Yes
  3. 确认Swift Language Version为Firebase支持的稳定版本（建议选最新兼容版）
• 清理编译缓存并重新构建：
  1. 在Xcode中执行Product > Clean Build Folder
  2. 重启Xcode和Flutter项目
  3. 重新运行项目：flutter run
• 检查Firebase初始化代码：确保iOS端的AppDelegate.swift或Runner.swift中正确初始化Firebase，示例代码：

  import Firebase
  
  func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
      FirebaseApp.configure()
      return true
  }
  

内容的提问来源于stack exchange，提问作者rai