Best way to create unique id for server use in android app

Question

I need a unique media id for each media which I will upload on a server in my app, because of some reason I need to create it from the Android side. Can anyone suggest any best way to achieve this?

Possible duplicate of [How can I get the UUID of my Android phone in an application?](https://stackoverflow.com/questions/5088474/how-can-i-get-the-uuid-of-my-android-phone-in-an-application) — Rumit Patel, Feb 22 '19 at 06:44
This could help https://developer.android.com/training/articles/user-data-ids — Rohit5k2, Feb 22 '19 at 06:45
@Rohit5k2 sorry for a wrong word, I want to ask the best way, now I edited my question. — Sazid Ali, Feb 22 '19 at 10:05

score 0 · Answer 1 · answered Feb 22 '19 at 07:19

0

You can generate unique id using below code:

UUID.randomUUID().toString()

it will return a unique string.

answered Feb 22 '19 at 07:19

subrahmanyam boyapati

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score 0 · Accepted Answer · answered Mar 20 '19 at 14:53

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finally, I find the solution, I am using userId+System.currentTimeMillis() and create a unique code, it is unique for each media and also for each user.

answered Mar 20 '19 at 14:53

Sazid Ali

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score -1 · Answer 3 · answered Feb 22 '19 at 06:43

-1

for unique Id use current Time in miliseconds

System.currentTimeMillis();

answered Feb 22 '19 at 06:43

Akash Suresh Dandwate

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I thing this is the easiest solution for uniqueness – Akash Suresh Dandwate Feb 22 '19 at 06:45
Easy doesn't mean correct. There is no guarantee of being milliseconds to be unique. What if another user takes the action at the exact same moment? – Rohit5k2 Feb 22 '19 at 06:47
its in milliseconds so this will rarely happen and another one solution is by getting device id but what if he want to create multiple unique id then?? – Akash Suresh Dandwate Feb 22 '19 at 06:49
Seems you could use some read. https://developer.android.com/training/articles/user-data-ids – Rohit5k2 Feb 22 '19 at 06:50
if 2 persons are upload media in-app at the same time it will create the same media id. – Sazid Ali Feb 22 '19 at 10:02
I have another one solution. That is generate md5 code of currentTimeInMiliSeconds and your device id that will be always diffrent from others – Akash Suresh Dandwate Feb 22 '19 at 10:27
You are funny. If a unit of time changes very fast that doesn't mean only one baby was born. :D – Rohit5k2 Mar 01 '19 at 09:08
Instead of making joke give the solution – Akash Suresh Dandwate Mar 01 '19 at 09:11
Just tell me how will you generate id at local that will remain unique at serverside – Akash Suresh Dandwate Mar 01 '19 at 09:14

Best way to create unique id for server use in android app

3 Answers3