Android BLE 蓝牙连接

蓝牙分为 低功耗蓝牙Ble 和 经典蓝牙

ble 不错的网址：

https://blog.csdn.net/chaoyue0071/article/details/43450091/
https://blog.csdn.net/xj10160/article/details/73655112
蓝牙框架
https://github.com/xiaoyaoyou1212/BLE
https://github.com/Jasonchenlijian/FastBle/blob/master/README_1.1.x.md
https://blog.csdn.net/qq_23174861/article/details/77637275