android BL4.0开发实例。 android版本至少4.3以上。 通过android手机的蓝牙设备控制外置的蓝牙灯的亮暗和定时开关。-android BL4.0 development examples. android version is at least 4.3 or higher. By android phone s Bluetooth device to control an external Bluetooth lamp light and dark and