iPhone Emoji Unicode Encoding UTF

I'm encoding Unicode Emoji characters into a string and loading that into a webview..

for th开发者_如何学Pythone encoding I'm using "NSUTF8StringEncoding" But the emoji characters just show up as jiberish unicode symbols like ∆¬ÓÔÓ˝ˆ So what encoding do I need?

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NSUTF32StringEncoding did the trick, didn't see it on the list of encoding before.