title: Determining the height of iPhone from ground level
body: <p>I am making an ios application in which it is to be determined that wether the person is sitting or standing.I wanted to know that if there is any method to find automatically that the person is sitting or standing like we can get the height from sea level with the help of <strong><em>CLLocation Manager</em></strong>.So like this can we get the height of iPhone from the ground level in any way?</p>