UILabel does not register touch - ios

Question

I have a problem, I want to drag a label with finger, and I can't even register a touch on it. What can be a problem? self is my viewcontroller and self.label is my label.
EDIT:
My label is made programmatically over an uiimageview. UserInteractionEnables is set to YES.
I am not sure what is wrong, here is code in its entirety:
Init:
UIImage *myImage = [UIImage imageNamed:#"fish.jpg"];
UIImageView *mainImageView = [[UIImageView alloc] initWithImage:myImage];
self.view.frame = CGRectMake(0, 0, 320, 480);
self.view = mainImageView;
self.label = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 200, 100)];
self.label.userInteractionEnabled = YES;
self.label.text = #"Hello, World";
[self.view addSubview:self.label];
Dragging:
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
UITouch *touch = [[event allTouches]anyObject];
if([[touch view] isEqual:self.label])
{
NSLog(#"touch on label");
self.startLocation = [[touches anyObject] locationInView:self.label];
// startLocation is a CGPoint declare globaly in .h..and lblName is your UILabel
}
}
- (void) touchesMoved:(NSSet *)touches withEvent: (UIEvent *)event
{
UITouch *touch = [[event allTouches]anyObject];
if([touch view] == self.label)
{
CGPoint pt = [[touches anyObject] previousLocationInView:self.label];
CGFloat dx = pt.x - self.startLocation.x;
CGFloat dy = pt.y - self.startLocation.y;
CGPoint newCenter = CGPointMake(self.label.center.x + dx, self.label.center.y + dy);
self.label.center = newCenter;
}
}
EDIT 2:
I have also tried this code, but it doesn't work too. I think the problem is not in these methods but with registering touches.
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
self.startLocation = [[touches anyObject] locationInView:self.view];
}
- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
CGPoint point = [[touches anyObject] locationInView:self.label];
self.label.center = CGPointMake(self.label.center.x + point.x - self.startLocation.x, self.label.center.y + point.y - self.startLocation.y);
}

Answer 1

Make sure you check "User Interaction Enabled" on the label in interface builder, or if you you doing it in code, userInteractionEnabled=YES

Answer 2

By default, UILAbel does not respond to touches. You need to enable the userInteractionEnabled property.
label.userInteractionEnabled = YES;