I made a custom Xcode Target and Scheme for my flutter app in order to run a development version of the app. I was able to successfully run the app (on a iOS Simulator) with the custom Xcode scheme using flutter run myApp --flavor myApp-dev

However, it's hard to debug when running in the command line, so I wanted to use VSCode to run it.

To do this, I added a new configuration in launch.js:

{
    // Use IntelliSense to learn about possible attributes.
    // Hover to view descriptions of existing attributes.
    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
    "version": "0.2.0",
    "configurations": [
        {
            "name": "myApp",
            "program": "lib/main.dart",
            "request": "launch",
            "type": "dart"
        },
        {
            "name": "myApp-dev",
            "program": "lib/main.dart",
            "request": "launch",
            "type": "dart",
            "args": ["--flavor myApp-dev"]
        }
    ]
}

The --flavor option was added with the args attribute, and it does seem to run flutter run myApp --flavor myApp-dev when I click "Start Debugging" with the new configuration in VSCode, because providing an incorrect option (e.g. "-flavor") raises an error.

However, my app still seems to run without the custom Xcode scheme I made. I can't figure out if this is the right way to do it, or what causing the "args" attribute to not seem to work as I expected it to.

CodePudding user response：

Figured out eventually that all the arguments that are separated by spaces in the command line have to be separated by commas. So the fix is:

{
    "name": "myApp-dev",
    "program": "lib/main.dart",
    "request": "launch",
    "type": "dart",
    "args": ["--flavor", "myApp-dev"]
}

Not sure why there is no documentation for this (or maybe I'm just too dumb to find it)... The closest thing to a documentation was this reference which didn't specify how to format the arguments.