Serial communication on Android phones

[dickthedev]

Hello, I have an app, has just a simple UI remote control app with of just one button, through a HC-05 bluetooth to turn on a LED on Arduino. But it was done in Swift for iOS apps. As an exercise, I would like to port it into an Andriod app, but Andriod apps are written in Java, I know very little about Java, I have no idea how to create an app for that. Any suggestions?
I suppose I have to first develop a serial communication function, then somehow link the function to the UI. How does Java handle serial communication? Thank you.

 

[Deleted User]

There's a tutorial here showing how to use a HC-05 module with a companion Android app. It may be useful for you to have a look at this code.

https://howtomechatronics.com/tutorials/arduino/arduino-and-hc-05-bluetooth-module-tutorial/