扫描蓝牙获取设备类型

https://www.jianshu.com/p/12b69fe68246

https://blog.csdn.net/dl10210950/article/details/86642553

系统源码获取设备类型图标的方法位于 /packages/apps/Settings/src/com/android/settings/bluetooth/BluetoothDevicePreference.java