【问题标题】:Flutter run xcode build fails but building directly with xcode succeededFlutter 运行 xcode 构建失败,但直接使用 xcode 构建成功
【发布时间】:2020-11-01 00:54:44
【问题描述】:

我是 iOS 开发新手,一开始就遇到了这个问题: 当我尝试运行我的 hello world 应用程序时,我得到了 xcodebuild 失败(我只写了最后几行,因为它太长了):

    81 errors generated.
    <unknown>:0: error: failed to emit precompiled header '/Users/mehec/Library/Developer/Xcode/DerivedData/Runner-cssmbpuzzkyjvpfghedbpvdhbbmr/Build/Intermediates.noindex/PrecompiledHeaders/Runner-Bridging-Header-swift_2PXLF604USZTM-clang_KLU4EDN5EN1U.pch' for bridging header '/Users/mehec/Desktop/bgp/learn_flutter_0_test/ios/Runner/Runner-Bridging-Header.h'
    <unknown>:0: error: generate-pch command failed with exit code 1 (use -v to see invocation)
    note: Using new build system
    note: Planning build
    note: Constructing build description

然后我尝试在 xcode 中构建和运行,一切都很好。

我尝试过flutter clean和flutter upgrade,甚至创建了一个新项目但没有效果

我使用的是 macOS 10.14.6、IntelliJ Idea 2020.1、Flutter 1.17.5 和 1.19.0、Xcode 11.3.1

main.dart 中的代码:

import 'package:flutter/material.dart';

void main() {
  runApp(Center(
    child: Text(
      "hello world",
      textDirection: TextDirection.rtl,
    ),
  ));
}

扑扑医生:

Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel beta, 1.19.0-4.3.pre, on Mac OS X 10.14.6 18G5033, locale en-US)
[✗] 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/docs/get-started/install/macos#android-setup for detailed instructions).
      If the Android SDK has been installed to a custom location, set ANDROID_SDK_ROOT to that location.
      You may also want to add it to your PATH environment variable.

 
[✓] Xcode - develop for iOS and macOS (Xcode 11.3.1)
[!] Android Studio (not installed)
[✓] IntelliJ IDEA Ultimate Edition (version 2020.1.3)
[✓] Connected device (1 available)

! Doctor found issues in 2 categories.

谢谢!

【问题讨论】:

    标签: ios xcode flutter dart


    【解决方案1】:

    我遇到了类似的问题。 从 Xcode.app 构建成功,但从命令行或 Android Studio 构建失败。

    最后,我重新安装了 rbenv,问题就消失了。

    在其他Github cmets中,有人用conda deactivate解决了这个问题,所以我认为这个问题是由Xcode.app没有引用的开发环境的一个bug引起的,比如ruby或者python环境。

    【讨论】: