Question

How can I use a UIDatePicker inside of a UIScrollView in my iPhone app. I can’t scroll through the dates on the picker, because it thinks my finger is controlling the UIScrollView instead. I’m trying to add a UIDatePicker to my UIScrollView, which is inside of my UIViewController.

Answer 1

After a few trials, I found the best solution to this problem was to subclass the scroll view that contains your date picker and do a hit test to see whether the user is trying to touch the picker. I found and adapted the code below from this question UIDatePicker inside UIScrollView with pages

- (UIView*)hitTest:(CGPoint)point withEvent:(UIEvent *)event
{
    UIView* result = [super hitTest:point withEvent:event];
    if ([result.superview isKindOfClass:[UIPickerView class]] || [result.superview isKindOfClass:[UIDatePicker class]])
    {
        self.canCancelContentTouches = NO;  
        self.delaysContentTouches = NO;
    }
    else 
    {
        self.canCancelContentTouches = YES; // (or restore bool from prev value if needed)
        self.delaysContentTouches = YES;    // (same as above)
    }
    return result;
}