How to calculate time in android .?

Question

I want to calculate time after a button pressed ,so that i can keep track that this much has been passed.I have search it and find that android timer can do that but i couldn't get any useful answer for that.

Thanks in advance.

Answer 1

On start button press:

long start = System.currentTimeMillis();

On update/end button press:

long runTime = System.currentTimeMillis() - start;

Answer 2

if you only want to calculate time difference between two events then you can use System.currentTimeMillis();.