How to identify Eddystone URL and uid?

Question

I wish to detect Eddystone Ul and uid without using Proximity Beacon API or Nearby Messages API. I wish to use native android libraries like BluetoothAdapter or BluetoothGatt or BluetoothGap to parse the eddystone frames. Is this feasible? if so how and If its not feasible then what could be the alternative?

Answer 1

All of Eddystone data is contained in the Bluetooth 4.0 ("Low Energy," "BLE") advertising packet, so no need for BluetoothGatt or BluetoothGap. Use the BluetoothLeScanner instead. In the onScanResult callback, you can access the advertising data via:

// assuming `result` is the ScanResult passed to the `onScanResult` callback
byte[] rawData = result
    .getScanRecord()
    .getServiceData(ParcelUuid.fromString("0000FEAA-0000-1000-8000-00805F9B34FB"));

Then, you will need to parse the bytes according to the Eddystone specs:

UID: https://github.com/google/eddystone/tree/master/eddystone-uid
URL: https://github.com/google/eddystone/tree/master/eddystone-url

There's also an example project included in the Eddystone repo, so you can probably start there, maybe reuse some code:

https://github.com/google/eddystone/tree/master/tools/eddystone-validator