Question

I have the following code:

- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {   NSUInteger touchCount = 0; // Enumerates through all touch objects for (UITouch *touchb in touches){     touchCount++; }   // When multiple touches, report the number of touches.  if (touchCount > 1) {     lblStatustouch.text = [NSString stringWithFormat:@'Tracking %d touches', touchCount]; } else {     lblStatustouch.text = [NSString stringWithFormat:@'Tracking 1 touch', touchCount]; } 

When I run it, it never detects more than one touch. Is there some setting that may prevent my app from taking multiple touches? Or am I missing something here?

Answer 1

You need to enable ‘Multiple Touch’ on your View in InterfaceBuilder

alt text http://img.skitch.com/20090227-rpkafsxtg56pujk1h1583if88i.jpg

or if you have created the View in code it’s set with

[theView setMultipleTouchEnabled:YES];