There are 3 repositories under bluetooth-chat topic.
Example bluetooth chat app using Bluetooth LE library to communicate between android devices
Android蓝牙聊天/即时通讯/文件传输,集成蓝牙服务,权限管理,文件操作等功能
Bluetooth Chat Application
Bluetooth chat app off a youtube tutorial.
App que representa o lado do Cliente na comunicação bluetooth entre dois dispositivos Android.
A script for send message with Bluetooth