Run app without breakpoints

Click Run > Start Without Debugging in the
main IDE window, or press Ctrl+F5.
The status bar turns orange to show you are in a debug session.

Run app with breakpoints

If desired, set breakpoints in your source code.

Click Run > Start Debugging in the main IDE window,
or press F5.

    
      The left Debug Sidebar shows stack frames and variables.
      The bottom Debug Console pane shows detailed logging output.
      Debugging is based on a default launch configuration.
To customize, click the cog at the top of the
Debug Sidebar to create a launch.json file.
You can then modify the values.

Run app in debug, profile, or release mode

Flutter offers many different build modes to run your app in. 
You can read more about them in Flutter’s build modes.

Open the launch.json file in VS Code.