UIScrollView ImageView with pins on top
- by Koppo
To all,
I have a UIScrollView which has a UIImageView. I want to show pins on this imageView. When I add pins as subviews of the ImageView everything is great except for when you zoom the scale transform happens on the pins also. I don't want this behavior and want my pins to stay the same.
So I choose to add the Pins to another view which sits on top of the ImageView and is also a subview of the UIScrollView. The idea here if you will imagine is to have a layer which hovers over the map and won't scale yet show pins over where I plot them.
The pin when added to the layer view don't cale if the ImageView scales. However the issue then bceomes the position of the pins doesn't match the original origin x/y as the ImageView has had a scale transform.
Basically this is a custom map of a place with Pins. I am trying to have the Pins float over and not zoom in and out over my ImageView yet remember where I placed them when the zoom happens.
Some code
scrollView = [[UIScrollView alloc] initWithFrame:viewRect];
scrollView.delegate = self;
scrollView.pagingEnabled = NO;
scrollView.scrollsToTop = NO;
[scrollView setBackgroundColor:[UIColor clearColor]];
scrollView.clipsToBounds = YES; // default is NO, we want to restrict drawing within our scrollview
scrollView.bounces = YES;
scrollView.autoresizingMask = UIViewAutoresizingFlexibleHeight;
scrollView.indicatorStyle = UIScrollViewIndicatorStyleWhite;
imageViewMap = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"image.png"]];
imageViewMap.userInteractionEnabled = YES;
viewRect = CGRectMake(0,0,imageViewMap.image.size.width,imageViewMap.image.size.height);
//viewRect = CGRectMake(0,0,2976,3928);
[scrollView addSubview:imageViewMap];
[scrollView setContentSize:CGSizeMake(viewRect.size.width, viewRect.size.height)];
iconsView = [[UIView alloc] initWithFrame:imageViewMap.frame];
[scrollView addSubview:iconsView];
Code to add Pin later on some event.
[iconsView addSubview:pinIcon];
I am stuck in trying tp figure out how to to get my pins to hover on the map without moving when the scale happens.
Thanks
