how to create a unique GUID

[Mark Bolduc]

If you are experiencing an issue please mention the full platform your issue applies to:
IDE: NetBeans/Eclipse/IDEA Netbeans 11.3
Desktop OS Windows 10 Pro
Simulator Latest

Device ALL

How can I create a unique client identifier (GUID)

Log.getUniqueDeviceId() is deprecated and returns -1;

Thoughts?

Regards

[Marisole Aromatherapy]

Hi marcus,

have a look at this

public String getRandomHexBlob() {
        Random r = new Random();
        StringBuffer sb = new StringBuffer();
        while (sb.length() < 32) {
            sb.append(Integer.toHexString(r.nextInt()));
        }

        return sb.toString().substring(0, 32).toUpperCase();
    }

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[Shai Almog]

The original UUID code used a server side to get a truly unique id but it would be different for each install (which might be OK). Technically, this is a much harder problem than one would immediately expect due to privacy laws. So I suggest backtracking and thinking why you need that unique id.

[Mark Bolduc]

Thanks,

This is used to identify each client to the Server.

Regards.

[Shai Almog]

In that case you have a server and it should assign a unique ID which you can store in the device preferences. Technically this is exactly what Logs unique ID used to do.

Notice that real world apps such as uber/whatsapp etc. use phone numbers to identify devices and actually physically ask you to type in your phone number. Phone APIs to query the phone number are restricted and even in-accessible usually.

[Dave Dyer]

My requirements aren't too strict - I remember a value stored with the properties API, and generate it from the

current time of day (millisecond precision).