蓝牙通讯，实现蓝牙的扫描，配对，数据收发行操作，但不支持ble-Bluetooth communication, Bluetooth scanning, matching, data collection issue operation, but does not support ble

Android 下与蓝牙4.0通讯的例程，比较简化，对照谷歌网站上的开发说明，参考本代码可以更快掌握BLE的操作-Routines, and Bluetooth 4 communication under Android is simplified, control development Google instructions on the website, refer to the code can master the operation of BLE faster

主要是蓝牙的扫面和连接功能，与BLE设备通讯。-Mainly bluetooth scanning, and connectivity, communication with BLE devices.

Android 4.3（API Level 18）开始引入Bluetooth Low Energy（BLE，低功耗蓝牙）的核心功能并提供了相应的API，应用程序通过这些api可以扫描设备、查询services，读写设备的characteristics（属性特征）。对比传统的蓝牙，BLE的设计能够显著减低功耗。这让Android应用程序与BLE设备之间的低功耗通讯成为可能，例如距离传感器、心率监视器、健身设备等等。-Android 4.3 (API Level 18) introduced Blu