How do you run a flutter app in release mode or code?

The launch. json file is used to configure the debugger in VSCode and the Flutter app is by default run in Debug mode . This allows features like hot reload and hot restart. Click on the Debug icon on the far left toolbar and you’ll see a message as follows.28 May 2020

As described in the Launch Configurations section of the VS Code docs: VS Code keeps debugging configuration information in a launch. json file located in a . vscode folder in your workspace (project root folder) or in your user settings or workspace settings .

You can open your launch configuration file by clicking on the Debug side bar and then either the cog icon at the top, or the create a launch. json file link below the big blue button , depending on whether you already have one or not.