Double-tap or two single-taps?

Question

What is the time limit for two taps to be considered a double-tap, on the iPhone OS?

// Edit: Why is this important?

In order to handle single-tap and double-tap

Answer 1

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {

    UITouch *touch = [touches anyObject];

    NSUInteger tapCount = [touch tapCount];

    switch (tapCount) {
        case 1:
            [self performSelector:@selector(singleTapMethod) withObject:nil afterDelay:.4];
            break;
        case 2:
            [NSObject cancelPreviousPerformRequestsWithTarget:self selector:@selector(singleTapMethod) object:nil];
            [self performSelector:@selector(doubleTapMethod) withObject:nil afterDelay:.4];
            break;
        case 3:
            [NSObject cancelPreviousPerformRequestsWithTarget:self selector:@selector(doubleTapMethod) object:nil];
            [self performSelector:@selector(tripleTapMethod) withObject:nil afterDelay:.4];
            break;
        case 4:
            [NSObject cancelPreviousPerformRequestsWithTarget:self selector:@selector(tripleTapMethod) object:nil];
            [self quadrupleTap];
            break;
        default:
            break;
    }

}
@end

for me this code is working prefectly fine.... :) the last post was around august 15 09.... but i was going through the same problem so thought to share the solution i found....