放大图像，显示更多细节
我正在开发一个小项目，想要实现某种“谷歌地图”缩放。我的意思是我想显示图像，并让用户能够放大图片的一部分。
第一张图片应显示机场的整体视图，包括航站楼和登机口等。但是，当放大终端时，它应该显示更多有关公交车站、出租车站、信息、咖啡馆等位置的详细信息。它不应该是一张地图。
我在谷歌上搜索了一下，但找不到任何东西。谁有什么建议吗？类似内容的教程的首选链接？
谨致问候，
保罗·皮伦
I am working on a little project and want to implement some sort of "google maps" zooming. What I mean with that is that I want to show an image, and let the user be able to zoom in into a bit of the picture.
The first image should show an overall view of an airport, with its terminals and gates ect. But when zooming in on a terminal it should show more details on where bus stops, taxi stops, info, café's ect are located. It should NOT be a map.
I have searched Google a bit, but couldn't really find anything. Anyone who has any suggestions? Preferable links to tutorials for similar things?
Best regards,
Paul Peelen
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实现此目的的标准方法是使用
UIScrollView并在UIScrollView中添加带有CATiledLayer层的自定义UIView。您将通过绘制（设置内容）到内部CATiledLayer层来渲染图像。请查看 PhotoScroller 示例项目。The standard way to implement this is by using a
UIScrollViewand within theUIScrollViewadd a customUIViewwithCATiledLayerlayers. You will render the image by drawing (setting content) to the innerCATiledLayerlayers. Look at the PhotoScroller sample project.