iPhone MapKit，获取掉落的图钉的位置
我正在创建一个 iPhone 应用程序，让用户可以将图钉放在他们想要的任何位置。在他们放下图钉后，用户单击它，我希望它在标注中显示图钉的位置作为副标题。
我已经设置了地图视图以及呼出功能，并且用户可以将图钉放置在地图上他们想要的任何位置。
我知道有一个关于拖放图钉的教程，它们确实涵盖了此类内容。但我实际上很困惑，想知道是否有人可以指出我正确的方向。
I'm creating an iPhone application that gets the user to drop a pin where ever they want. After they drop the pin the user then clicks on it and i want it to show the location of the pin in the call out as the subtitle.
I have the mapview set up as well as the call out working and also the user is able to drop the pin where ever they want to on the map.
I know there is a tutorial for dragging and dropping a pin and they do cover something of this sort. But i'm actually really confused and was wondering if someone could point me in the right direction.
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我有一个关于可拖动图钉的很好的教程。
源代码可用：http://github.com/digdog/MapKitDragAndDrop
I've a good tutorial regarding the draggable pin.
The source code is available: http://github.com/digdog/MapKitDragAndDrop