Question

尝试在Iphone上启动我的应用程序时出现此错误。我该如何解决？

Error output from Xcode build:
↳
    ** BUILD FAILED **


Xcode's output:
↳
    duplicate symbol '_pb_field_iter_next' in:
        /Users/johndoe/Library/Developer/Xcode/DerivedData/Runner-awmjwtlfwtwzmhcficfyhoavvpwe/Build/Intermediates.noindex/Pods.build/Debug-iphonesimulator/nanopb.build/Objects-normal/x86_64/pb_common 2.o
        /Users/johndoe/Library/Developer/Xcode/DerivedData/Runner-awmjwtlfwtwzmhcficfyhoavvpwe/Build/Intermediates.noindex/Pods.build/Debug-iphonesimulator/nanopb.build/Objects-normal/x86_64/pb_common.o
    duplicate symbol '_pb_field_iter_begin' in:
        /Users/johndoe/Library/Developer/Xcode/DerivedData/Runner-awmjwtlfwtwzmhcficfyhoavvpwe/Build/Intermediates.noindex/Pods.build/Debug-iphonesimulator/nanopb.build/Objects-normal/x86_64/pb_common 2.o
        /Users/johndoe/Library/Developer/Xcode/DerivedData/Runner-awmjwtlfwtwzmhcficfyhoavvpwe/Build/Intermediates.noindex/Pods.build/Debug-iphonesimulator/nanopb.build/Objects-normal/x86_64/pb_common.o
    duplicate symbol '_pb_field_iter_find' in:

    ld: 35 duplicate symbols for architecture x86_64
    clang: error: linker command failed with exit code 1 (use -v to see invocation)
    note: Using new build system
    note: Building targets in parallel
    note: Planning build
    note: Constructing build description

Could not build the application for the simulator. 
Error launching application on iPhone 11 Pro.

Answer 1

我遇到了同样的问题，但我发现这可行。

1-更新Xcode。

2-将Flutter升级到终端中的最新版本：Flutter升级

3-使用以下命令更新可可豆荚：$ sudo gem install cocoapods

4-在Android Studio终端运行中：先清理干净然后再运行

之后，问题解决了。

Answer 2

我设法解决了这个问题。我正在观看YT介绍，以通过模拟器实时调试 flutter / dart / ios 。

结果是我需要更新flutter及其相关文件。

我刚跑过flutter upgrade --force。我相信这会覆盖以前保存的所有设置，因此在强制升级之前，请备份您的工作。但是，在运行并更新所有内容之后，它又再次对我有效。

无法为模拟器构建应用程序。在iPhone 11 Pro上启动应用程序时出错？

2 个答案: