Question

My question is how to get time duration between shaking the mobile by using accelerometer in android. My default threshold value is 800, and speed calculation formula is:

speed = Math.abs(x+y+z - last_x - last_y - last_z)/ diffTime * 10000;

Here I want to get time duration between first shake and next shake. If the duration is more than 10 sec means alert have to generate.

I don’t know how to calculate time intervals in sensor concepts. Please help me.

Thanks.

Answer 1

Just use System.currentTimeMillis() to get the time for the first shake and save it to some variable say preTime and when the user shakes again then you can get time difference simply subtracting like this diffTime = System.currentTimeMillis() - preTime

and now if the value of diffeTime/(1000 *10) > 10 then do your rest of calculation