Here is the complete solution plug-in for adding Android Bluetooth functionality to your application. This plug-in acts as a service and will not be disconnected even if your application is in a pause state.

You can also save the address of the connected server and request a connection again when you turn on the application again. It also supports repeated connection requests to the server.

If you use this plugin, you can create and control multiple channels through uuid, each channel acts as a client, server and can send and receive messages.

Features:

An easy-to-use, intuitive api is provided.
Documentation is provided Several demos are available.
Sample apk and video are provided.
pro version is not required.

SampleApplication

MathGame Sample apk
TwoChannel Sample apk

documentation