gistfile1.m

// Splitter view recognizer should only begin if we're truly touching something inside the splitter view
- (BOOL)gestureRecognizerShouldBegin:(UIGestureRecognizer *)gestureRecognizer
{
    if (gestureRecognizer == _splitterPanRecognizer) {
        CGPoint location = [gestureRecognizer locationInView:self.view];

        BOOL didHitView = NO;

        NSArray *hitTestViews = @[_splitterView];
        hitTestViews = [hitTestViews arrayByAddingObjectsFromArray:_splitterView.subviews];

        for (UIView *hitTestView in hitTestViews) {
            CGPoint locationInView = [hitTestView convertPoint:location fromView:self.view];

            if (CGRectContainsPoint(hitTestView.bounds, locationInView)) {
                didHitView = YES;
            }
        }

        return didHitView;
    }
    
    return NO;
}

// Make other gesture recognizers fail if we have a hit on our splitter view
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldBeRequiredToFailByGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer
{
    if ([self gestureRecognizerShouldBegin:gestureRecognizer] == YES) {
        return YES;
    }

    return NO;
}