android BluetoothDevice.getName() return null

Question

On sometime, BluetoothDevice.getName() return null. How can i fix it? remoteDeviceName maybe null in following code. And i need distinguish my device and other devices by re

Answer 1

For someone hasn't found the solution.

1. Bluetooth advertisement package has maximum size is 31 bytes. So if your device has long name. It can be truncated. See: https://devzone.nordicsemi.com/f/nordic-q-a/14/what-s-the-maximum-size-for-an-advertisement-package

2. If you do want to get correct name of bluetooth device (even long name), please don't use startLeScan(). Instead of it, using method startDiscovery(). Google said: "The discovery process usually involves an inquiry scan of about 12 seconds, followed by a page scan of each device found to retrieve its Bluetooth name.". I've tried and it works like a charm. See: https://developer.android.com/guide/topics/connectivity/bluetooth