iOS Programming: The Big Nerd Ranch Guide

UILongPressGestureRecognizer

Let’s test out two other subclasses of UIGestureRecognizer: UILongPressGestureRecognizer and UIPanGestureRecognizer. When the user holds down on a line (a long press), that line should be selected. While a line is selected in this way, the user should be able to drag the line (a pan) to a new position.

In this section, we’ll focus on the long press recognizer. In TouchDrawView.m, instantiate a UILongPressGestureRecognizer in initWithFrame: and add it to the TouchDrawView.

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