Is there a way to control the intensity of the iPhone vibration in real time

Question

For example, I would like to make a slider that starts off at 0 intensity vibration. As the user slides the slider closer to 100, the vibration increases in real time, until they release the slider, at which time the vibration should stop.

Answer 1

There is CoreHaptics framework that release last year for you

You can see sample code here