When touches Cancelled method get invoked in iPhone?

Question

I am able to understand that when user just touches the view, touches Began and Ended called. When user swipes their hand on a view, touches Moved method gets called. But when d

Answer 1

And, from the Event Handling Guide for iOS, p. 19:

It sends the touchesCancelled:withEvent: message when the touch sequence is cancelled by a system event, such as an incoming phone call.