这个例子是安卓开发中bluetoothchat的例子，具体可见安卓api文档-bluetooth chat

简单的蓝牙连接处理模块，可查看蓝牙的属性和连接状态(Simple Bluetooth connection processing module)

易安卓写的可以生成悬浮窗，并通过悬浮窗发送串口数据给蓝牙，发送的数据还可以在设置里进行编辑。(Yi Anzhuo can create a suspension window and send serial data to the Bluetooth through the suspension window, and the data sent can also be edited in the settings.)