"Flutter create command was unsuccessful"

[Timmmm]

Steps to Reproduce

1. Start IntelliJ

2. Create a new Flutter project.

3. I get the following error message:

   Flutter create command was unsuccessful

Running flutter create foo from the command line works fine.

Who knows what this error is but it would definitely be better if it displayed the command output in the error message so I have a vague clue.

Version info

[√] Flutter (on Microsoft Windows [Version 10.0.15063], channel alpha)
    • Flutter at C:\Users\Tim\Flutter\flutter
    • Framework revision dc4ca8db83 (3 days ago), 2017-05-11 15:33:29 -0700
    • Engine revision f99d3ef108
    • Tools Dart version 1.23.0-dev.11.11

[√] Android toolchain - develop for Android devices (Android SDK 25.0.3)
    • Android SDK at C:\Users\Tim\AppData\Local\Android\sdk
    • Platform android-25, build-tools 25.0.3
    • Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java
    • Java version: OpenJDK Runtime Environment (build 1.8.0_112-release-b06)

[√] Android Studio (version 2.3)
    • Android Studio at C:\Program Files\Android\Android Studio
    • Gradle version 3.2
    • Java version: OpenJDK Runtime Environment (build 1.8.0_112-release-b06)

[√] IntelliJ IDEA Community Edition (version 2017.1)
    • Dart plugin version 171.4424
    • Flutter plugin version 13.1

[√] Connected devices
    • None

[Timmmm]

I believe this is related to #1020. When I created a new project, I had to type the SDK location in, rather than use the browse button because of that bug.

After the Flutter create command was unsuccessful error, IntelliJ still creates an empty project. If I then go into the Flutter settings, the SDK path is not filled in! I can fill it in there (this time the browse button works, although it is still way slower than the normal file->open browser; you must be doing something weird with it).

After filling in the SDK path there, when I go to create a new Flutter project it works and doesn't give me the Flutter create command was unsuccessful error.

[Timmmm]

Ugh, spoke too soon. It seems every time I close and delete previous Flutter projects, IntelliJ forgets the Flutter SDK location. So the only way to successfully create a project is:

1. Create a new Flutter project. It will fail, but will create an empty IntelliJ project.
2. Go to Settings->Flutter and set the SDK path (which will be blank).
3. Create a new Flutter project via File->New Project

Very odd.

[Timmmm]

Ok I found out what actually causes this. I don't think it is related to #1020 after all. You get the error if your project name contains any capital letters. Something totally crazy is going on there...

[pq]

Thanks @Timmmm. Sorry for the confusion. It turns out that flutter create is pretty defensive and does some draconian name validation. Take a look at #1009 for a bit of discussion. On the bright side, this is fixed and will be in the next release. 👍

[pq]

(duplicates #1009.)

[miniBloq]

I updated to Android Studio 3.3.1 in MacOS and there is no way I can create a new project with it. The final outcome varies from the initial description in the first post on this thread, to something like going back to the create project dialog, with just an empty directory where the just created one was supposed to be.

[devoncarew]

@miniBloq, this is an old issue. Can you open a new one, with the output from flutter doctor, and any likely exceptions from the Android Studio logs? Thanks!

[cyrus-programmer]

Hey Everyone,
I'm facing an issue that the flutter create command was unsuccessful but I'm facing one more problem that is when I run command (Flutter Doctor) it show that android studio is not installed but I have installed it. I'm working on it for almost 2 days but can't resolve the issue.