How do you use your phone as a Flutter?

Set up and deploy Flutter apps on your Android device Using a USB cable, plug your phone into your computer . If prompted on your device, authorize your computer to access your device. In the terminal, run the flutter devices command to verify that Flutter recognizes your connected Android device.

Summary. No, you cannot convert your existing Android code into Dart code for Flutter, which is necessary to enable cross-platform behavior because all code used by the Flutter SDK has to be written in Dart.