架构 armv7 flutter 的未定义符号

Question

当我为通用设备构建或为真实设备运行时，它会在 xcode 上出现以下错误

ld: warning: Could not find auto-linked framework 'Flutter' Undefined symbols for architecture armv7:   "_FlutterMethodNotImplemented", referenced from:
      -[FLTDeviceInfoPlugin handleMethodCall:result:] in DeviceInfoPlugin.o   "_OBJC_CLASS_$_FlutterMethodChannel", referenced from:
      objc-class-ref in DeviceInfoPlugin.o ld: symbol(s) not found for architecture armv7 clang: error: linker command failed with exit code 1 (use -v to see invocation)

并且 flutter build 命令运行没有错误

扑医生：

121:flutter_module sumeetjain$ flutter doctor Doctor summary (to see all details, run flutter doctor -v): [?] Flutter (Channel stable, v1.9.1+hotfix.2, on Mac OS X 10.14.6 18G95, locale en-IN) [?] 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.dev/setup/#android-setup for detailed instructions).
      If the Android SDK has been installed to a custom location, set ANDROID_HOME to that location.
      You may also want to add it to your PATH environment variable.

[?] Xcode - develop for iOS and macOS (Xcode 10.3) [!] Android Studio (not installed) [?] Connected device (2 available)

! Doctor found issues in 2 categories. 

但是当我将频道更改为 master 时，错误不会出现。因为我想发布我的应用程序，所以我不能在主频道上这样做对吧！

主通道颤振博士

[?] Flutter (Channel master, v1.10.3-pre.70, on Mac OS X 10.14.6 18G95, locale en-IN)
[?] 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.dev/setup/#android-setup for detailed instructions).
      If the Android SDK has been installed to a custom location, set ANDROID_HOME to that location.
      You may also want to add it to your PATH environment variable.

[?] Xcode - develop for iOS and macOS (Xcode 10.3)
[!] Android Studio (not installed)
[!] Connected device
    ! No devices available

! Doctor found issues in 3 categories.

Answer 1

这是 Flutter 方面的一个错误。此问题的唯一解决方法是升级您正在使用的 SDK 版本。该问题不会出现在 master 上，并且修复程序也应该推出到稳定版。