I can grab and drag an image onto an image, but it immediately disappears.If I drag a littleImage onto a FtbllImage, then as soon as I release it, the littleImage disappears and is not saved on top What could be the cause and how can I fix it?

I’m trying to make a simple app where you need to drag an image of a football player onto an image of a football field. I think I did everything right, but drag and drop doesn’t work for some reason. Please tell me how I can change my code so that everything works?this is my code

I have contact data in my iOS app. I’ve created a CNMutableContact object and populated it with this data. Next, I created an NSItemProvider with this data and used it to create a UIDragItem. However, when I drag the contact view and drop it onto the Contacts app, the contact does not get imported. What could be the issue here?