Menu
In my app, I scan low energy Bluetooth for specific service uuid 2415. To convert the string 2415 into uuid I am using UUID serviceUUID = UUID.fromString("2415"); but at this line exception arises IllegalArgumentException: Invalid UUID 2415.
Please help me in this respect I would b very thankful to in this regard. Thanks in advance.
839
The fromString(String name) method is used to create a UUID from the string standard representation as described in the toString() method.
The fromString() method of UUID class in Java is used for the creation of UUID from the standard string representation of the same. Parameters: The method takes one parameter UUID_name which is the string representation of the UUID. Return Value: The method returns the actual UUID created from the specified string.
A class that represents an immutable universally unique identifier (UUID). A UUID represents a 128-bit value. There exist different variants of these global identifiers.
The fromString () method of UUID class in Java is used for the creation of UUID from the standard string representation of the same. Parameters: The method takes one parameter UUID_name which is the string representation of the UUID. Return Value: The method returns the actual UUID created from the specified string.
* The UUID is generated by using ANDROID_ID as the base key if appropriate, * falling back on TelephonyManager.getDeviceID () if ANDROID_ID is known to * be incorrect, and finally falling back on a random UUID that's persisted * to SharedPreferences if getDeviceID () does not return a usable value.
UUID * Returns a unique UUID for the current android device. As with all UUIDs, * devices. Much more so than ANDROID_ID is. * to SharedPreferences if getDeviceID () does not return a usable value. * In some rare circumstances, this ID may change.
The confusion that may lead many people here is that you can use short code UUIDs to reference bluetooth services and characteristics on other platforms - for instance on iOS with CBUUID . On Android however, you must provide a full, 128-bit length UUID as specified in RFC4122.
Using the class UUID
An example like this:
UUID.randomUUID().toString() The accepted answer was provided in a comment by @Michael:
Have you tried combining your short UUID with the Bluetooth base UUID? I.e. "00002415-0000-1000-8000-00805F9B34FB"? (assuming that you meant 2415 hexadecimal)?
I'm converting that comment to an answer because I missed it first time I read through this thread.
25
answered Oct 08 '22 02:10
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
