----about Android Bluetooth search to device icon display and device filtering

According to: https://www.douban.com/note/637446089/
Http://bbs.16rd.com/blog-23795-3446.html

The following excerpt from the original:
(Android host) when each device is searched, the (device) will provide COD (class of devices) to each other, the search party can determine the device type according to Cod.
When Android searches for device, it will (get) COD update to Settings, save to Cachedbluetoothdevice.mbtclass; The UI update then determines the type according to the value of Mbtclass and selects the corresponding icon to display.
To mask HID Bluetooth keyboard/mouse As an example, the other only need to modify the filter class outside, all the same ....

----about Android Bluetooth search to device icon display and device filtering