BLE设备名称不可检索

Question

I have a project that is scanning for beacons that run on BLE.

I can scan for the beacon and list them in a nice custom ListView just fine. However retrieving their names seems to not work.

In my OnLeScan callback I use device.getName() which appears to always be returning null?

Furthermore, when I attempt to parse the ScanRecord byte[] array for the data in concordance with this post - I still am not having much luck. Any ideas/tips?

Should I be retrieving the local name from the BluetoothDevice class? Should I retrieve it from parsing the ScanRecord/ScanResult class?

Here is what my onLeScan looks like:

public void onLeScan(final BluetoothDevice device, int rssi, final byte[] scanRecord) {

                runOnUiThread(new Runnable() {
                    @Override
                    public void run() {

                        Log.v(device.getName(),device.getName());
                            mLeDeviceListAdapter.addDevice(device);
                            mLeDeviceListAdapter.notifyDataSetChanged();
                        }


                    }
                });
            }

Edit:

I attempted some modification of the code from the linked post. Adding a case 0x08: as suggested in the comments. However my ListView still lists all found devices as "unknown device" by default and will not retrieve the friendly name.

Answer 1

See this answer for a breakdown of an iBeacon advertisement packet. There is no name.

The official spec is only available via Apple's MFi program.