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android - 无法运行 Flutter 入门。在根项目“myapp”中找不到项目“app”

问题描述

笔记。我可以找到许多标题相似的问题，但没有一个是在相同的上下文中，而且他们提出的解决方案都不适合我。

我正在尝试按照官方教程开始使用 Flutter。（https://flutter.io/get-started/test-drive/#terminal）

当我尝试跑步时

flutter run

该过程挂在“解决依赖关系”上

bruno@bruno-Latitude-E5430-non-vPro ~/Projects/myapp $ flutter run
Using hardware rendering with device Android SDK built for x86. If you get graphics artifacts, consider enabling software rendering with "--enable-software-rendering".
Launching lib/main.dart on Android SDK built for x86 in debug mode...
Initializing gradle...                                       0.7s
Resolving dependencies...                                       -^C
bruno@bruno-Latitude-E5430-non-vPro ~/Projects/myapp $

所以，我试着用'-v'运行

flutter run -v

并且进程挂在'[] [android/] /home/bruno/Projects/myapp/android/gradlew app:properties'

bruno@bruno-Latitude-E5430-non-vPro ~/Projects/myapp $ flutter run -v
[  +29 ms] [/home/bruno/development/flutter/] git rev-parse --abbrev-ref --symbolic @{u}
[  +31 ms] Exit code 0 from: git rev-parse --abbrev-ref --symbolic @{u}
[        ] origin/beta
[        ] [/home/bruno/development/flutter/] git rev-parse --abbrev-    ref HEAD
[   +6 ms] Exit code 0 from: git rev-parse --abbrev-ref HEAD
[        ] beta
[        ] [/home/bruno/development/flutter/] git ls-remote --get-url     origin
[   +5 ms] Exit code 0 from: git ls-remote --get-url origin
[        ] https://github.com/flutter/flutter.git
[        ] [/home/bruno/development/flutter/] git log -n 1 --    pretty=format:%H
[   +6 ms] Exit code 0 from: git log -n 1 --pretty=format:%H
[        ] c7ea3ca377e909469c68f2ab878a5bc53d3cf66b
[        ] [/home/bruno/development/flutter/] git log -n 1 --pretty=format:%ar
[   +8 ms] Exit code 0 from: git log -n 1 --pretty=format:%ar
[        ] 7 weeks ago
[        ] [/home/bruno/development/flutter/] git describe --match v*.*.* --first-parent --long --tags
[   +6 ms] Exit code 0 from: git describe --match v*.*.* --first-    parent --long --tags
[        ] v0.5.1-0-gc7ea3ca
[ +141 ms] /home/bruno/Android/Sdk/platform-tools/adb devices -l
[   +6 ms] Exit code 0 from: /home/bruno/Android/Sdk/platform-tools/adb devices -l
[        ] List of devices attached
           emulator-5554          device product:sdk_google_phone_x86         model:Android_SDK_built_for_x86 device:generic_x86 transport_id:3
[ +161 ms] /home/bruno/Android/Sdk/platform-tools/adb -s emulator-5554 shell getprop
[  +32 ms] ro.hardware = ranchu
[  +16 ms] Using hardware rendering with device Android SDK built for x86. If you get graphics artifacts, consider enabling software rendering with "--enable-software-rendering".
[ +608 ms] Launching lib/main.dart on Android SDK built for x86 in debug mode...
[   +5 ms] Initializing gradle...
[   +7 ms] Using gradle from     /home/bruno/Projects/myapp/android/gradlew.
[  +56 ms] /home/bruno/Projects/myapp/android/gradlew -v
[ +632 ms] 
                   ------------------------------------------------------------
                   Gradle 4.1
                   ------------------------------------------------------------

                   Build time:   2017-08-07 14:38:48 UTC
                   Revision:     941559e020f6c357ebb08d5c67acdb858a3defc2

                   Groovy:       2.4.11
                   Ant:          Apache Ant(TM) version 1.9.6 compiled on June 29 2015
                   JVM:          1.8.0_152-release (JetBrains s.r.o 25.152-b01)
                   OS:           Linux 4.13.0-45-generic amd64
[   +2 ms] Resolving dependencies...
[        ] [android/] /home/bruno/Projects/myapp/android/gradlew app:properties

我尝试直接从终端运行“android/gradlew app:properties”：

并得到这个错误：

bruno@bruno-Latitude-E5430-non-vPro ~/Projects/myapp $ android/gradlew app:properties

FAILURE: Build failed with an exception.

* What went wrong:
Project 'app' not found in root project 'myapp'.

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

* Get more help at https://help.gradle.org

BUILD FAILED in 0s

怎么了？？？？

bruno@bruno-Latitude-E5430-non-vPro ~/Projects/myapp $ tree
.
├── android
│   ├── app
│   │   ├── build.gradle
│   │   └── src
│   │       └── main
│   │           ├── AndroidManifest.xml
│   │           ├── java
│   │           │   ├── com
│   │           │   │   └── example
│   │           │   │       └── myapp
│   │           │   │           └── MainActivity.java
│   │           │   └── io
│   │           │       └── flutter
│   │           │           └── plugins
│   │           │               └── GeneratedPluginRegistrant.java
│   │           └── res
│   │               ├── drawable
│   │               │   └── launch_background.xml
│   │               ├── mipmap-hdpi
│   │               │   └── ic_launcher.png
│   │               ├── mipmap-mdpi
│   │               │   └── ic_launcher.png
│   │               ├── mipmap-xhdpi
│   │               │   └── ic_launcher.png
│   │               ├── mipmap-xxhdpi
│   │               │   └── ic_launcher.png
│   │               ├── mipmap-xxxhdpi
│   │               │   └── ic_launcher.png
│   │               └── values
│   │                   └── styles.xml
│   ├── build.gradle
│   ├── gradle
│   │   └── wrapper
│   │       ├── gradle-wrapper.jar
│   │       └── gradle-wrapper.properties
│   ├── gradle.properties
│   ├── gradlew
│   ├── gradlew.bat
│   ├── local.properties
│   └── settings.gradle
├── ios
│   ├── Flutter
│   │   ├── AppFrameworkInfo.plist
│   │   ├── Debug.xcconfig
│   │   ├── Generated.xcconfig
│   │   └── Release.xcconfig
│   ├── Runner
│   │   ├── AppDelegate.h
│   │   ├── AppDelegate.m
│   │   ├── Assets.xcassets
│   │   │   ├── AppIcon.appiconset
│   │   │   │   ├── Contents.json
│   │   │   │   ├── Icon-App-1024x1024@1x.png
│   │   │   │   ├── Icon-App-20x20@1x.png
│   │   │   │   ├── Icon-App-20x20@2x.png
│   │   │   │   ├── Icon-App-20x20@3x.png
│   │   │   │   ├── Icon-App-29x29@1x.png
│   │   │   │   ├── Icon-App-29x29@2x.png
│   │   │   │   ├── Icon-App-29x29@3x.png
│   │   │   │   ├── Icon-App-40x40@1x.png
│   │   │   │   ├── Icon-App-40x40@2x.png
│   │   │   │   ├── Icon-App-40x40@3x.png
│   │   │   │   ├── Icon-App-60x60@2x.png
│   │   │   │   ├── Icon-App-60x60@3x.png
│   │   │   │   ├── Icon-App-76x76@1x.png
│   │   │   │   ├── Icon-App-76x76@2x.png
│   │   │   │   └── Icon-App-83.5x83.5@2x.png
│   │   │   └── LaunchImage.imageset
│   │   │       ├── Contents.json
│   │   │       ├── LaunchImage@2x.png
│   │   │       ├── LaunchImage@3x.png
│   │   │       ├── LaunchImage.png
│   │   │       └── README.md
│   │   ├── Base.lproj
│   │   │   ├── LaunchScreen.storyboard
│   │   │   └── Main.storyboard
│   │   ├── GeneratedPluginRegistrant.h
│   │   ├── GeneratedPluginRegistrant.m
│   │   ├── Info.plist
│   │   └── main.m
│   ├── Runner.xcodeproj
│   │   ├── project.pbxproj
│   │   ├── project.xcworkspace
│   │   │   └── contents.xcworkspacedata
│   │   └── xcshareddata
│   │       └── xcschemes
│   │           └── Runner.xcscheme
│   └── Runner.xcworkspace
│       └── contents.xcworkspacedata
├── lib
│   └── main.dart
├── myapp_android.iml
├── myapp.iml
├── pubspec.lock
├── pubspec.yaml
├── README.md
└── test
    └── widget_test.dart

35 directories, 63 files

标签： androidgradleflutter

解决方案

来自gradlew 文档：“执行任何 Gradle 构建的推荐方法是借助 Gradle Wrapper（简称“Wrapper”）。Wrapper 是一个脚本，它调用已声明的 Gradle 版本，如有必要，请事先下载。 "

所以，我的猜测是这个过程没有挂起，只是需要很长时间才能完成。我会检查网络活动以查看是否正在下载某些内容。

PS：手动运行 gradlew 命令时遇到的错误不是问题，如果您进入 android 目录，它应该可以工作。

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