Can you make your entire application pinch-zoomable?

Is it possible/safe to make an UIKit based app zoomable globally? (The entire app view is pinch zoomable).

I think it 开发者_开发问答similar with web page (html based app) zoom functionality inside UIWebview.

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Yes, it is possible.

To achieve this, just add your UIView to a UIScrollView that covers the whole window.