'（操作系统错误：文件名太长，errno = 63）'运行flutter应用程序时出现构建错误

Question

我在尝试构建或运行我的 flutter 应用程序时收到此错误。这有点令人沮丧，因为我似乎不知道问题出在哪里。

 +9 ms] [  +15 ms] Target debug_android_application failed: FileSystemException: Cannot copy file to
    '/Users/User/FlutterProjects/heala_patient_app/android/app/build/intermediates/flutter/debug/flutter_assets/androi
    d/app/build/intermediates/flutter/debug/flutter_assets/android/app/build/intermediates/flutter/debug/flutter_asset
    s/android/app/build/intermediates/flutter/debug/flutter_assets/android/app/build/intermediates/flutter/debug/flutt
    er_assets/android/app/build/intermediates/flutter/debug/flutter_assets/android/app/build/intermediates/flutter/deb
    ug/flutter_assets/android/app/build/intermediates/flutter/debug/flutter_assets/android/app/build/intermediates/flu
    tter/debug/flutter_assets/android/app/build/intermediates/merged_assets/debug/out/flutter_assets/android/app/build
    /intermediates/merged_assets/debug/out/flutter_assets/android/app/build/intermediates/merged_assets/debug/out/flut
    ter_assets/android/app/build/intermediates/merged_assets/debug/out/flutter_assets/android/app/build/intermediates/
    merged_assets/debug/out/flutter_assets/android/app/build/intermediates/merged_assets/debug/out/flutter_assets/.env
    ', path =
    '/Users/User/FlutterProjects/heala_patient_app/android/app/build/intermediates/flutter/debug/flutter_assets/androi
    d/app/build/intermediates/flutter/debug/flutter_assets/android/app/build/intermediates/flutter/debug/flutter_asset
    s/android/app/build/intermediates/flutter/debug/flutter_assets/android/app/build/intermediates/flutter/debug/flutt
    er_assets/android/app/build/intermediates/flutter/debug/flutter_assets/android/app/build/intermediates/flutter/deb
    ug/flutter_assets/android/app/build/intermediates/flutter/debug/flutter_assets/android/app/build/intermediates/mer
    ged_assets/debug/out/flutter_assets/android/app/build/intermediates/merged_assets/debug/out/flutter_assets/android
    /app/build/intermediates/merged_assets/debug/out/flutter_assets/android/app/build/intermediates/merged_assets/debu
    g/out/flutter_assets/android/app/build/intermediates/merged_assets/debug/out/flutter_assets/android/app/build/inte
    rmediates/merged_assets/debug/out/flutter_assets/.env' (OS Error: File name too long, errno = 63)

Answer 1

路径的最大字节数为 4096。文件名的最大字节数为 255 字节。 所以，这意味着：因为该字符等于 2 个字节，所以它将类似于： 文件名的最大字符数 = 255 字节 / 字符的 2 字节数 = 127 个字符。 路径的最大字符 = 4096 字节 / 字符的 2 字节 = 2048 字符。

Answer 2

删除

android/build

文件夹并重新运行