# How can we configure 'launch.json' of Firebase Studio to prevent Android launch?

**URL:** <https://community.firebasestudio.dev/t/how-can-we-configure-launch-json-of-firebase-studio-to-prevent-android-launch/18511>\
**Category:** Previews\
**Created:** [August 21, 2025, 4:59pm UTC](https://community.firebasestudio.dev/t/how-can-we-configure-launch-json-of-firebase-studio-to-prevent-android-launch/18511 "2025-08-21T16:59:08Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![angel](https://sea2.discourse-cdn.com/flex002/user_avatar/community.firebasestudio.dev/angel/32/4260_2.png) [@angel](https://community.firebasestudio.dev/u/angel)\
**Post date:** [August 21, 2025, 4:59pm UTC](https://community.firebasestudio.dev/t/how-can-we-configure-launch-json-of-firebase-studio-to-prevent-android-launch/18511/1 "2025-08-21T16:59:08Z")

</div>

My flutter project is always launching android emulator and web emulator, even though I do not want to launch Android emulator at all (it’s just a flutter web project).

My launch.json is

```auto
{
    "version": "0.2.0",
    "configurations": [
        {
            "name": "Run on Web",
            "request": "launch",
            "type": "dart",
            "flutterMode": "debug",
            "args": [
                "-d",
                "chrome"
            ]
        }
    ]
}

```

As you can see, no mention of Android emulator. Yet every time I open the environment, it tries hard to open it on Android (and 100 errors obviously as it’s not compatible).

How can I prevent that? Also, I don’t think launch.json as a whole is working a lot regarding the web preview; how can I change the Firebase Studio web preview params?

And finally, when I do flutter run -d chrome on the terminal, I don’t see the chrome launch ‘device’, yet the web preview is obviously launching on chrome? Months ago I didn’t have these issues, not sure what changed.

Edit: fixed the last issue by setting the address to chrome internally but this wasn’t very nice either