对于有效的URL，NSURL返回nil [英] NSURL is returning nil for a valid URL

问题描述

我有一个有效的Google地图网址，如果您在浏览器中运行，则会显示地图图片。但是，当我把它放在我的Swift代码中并尝试从String创建NSURL时，它返回nil

I have a valid URL for google maps , which if you run in your browser would show an image of a map. However, when I put it inside my Swift code and try to create an NSURL from String it returns nil

let urlString = "https://maps.googleapis.com/maps/api/staticmap?maptype=hybrid&center=37.33233141,-122.0312186&path=color:0xff0000|weight:10|37.33233141,-122.0312186|21.422570,%2039.826190&markers=color:blue%7Clabel:S%7C37.33233141,-122.0312186&markers=color:blue%7Clabel:S%7C21.422570,39.826190&zoom=1&size=1080x1920"
let url = NSURL(string: urlString)

目前，这返回nil，我不知道为什么。我做错了什么？

Currently , this returns nil, I don't know why. Am I doing something wrong?

推荐答案

它应该有效：这就是为什么 http://www.url-encode-decode.com

It should work: Here is why http://www.url-encode-decode.com

        let url = NSURL(string: urlString.stringByAddingPercentEscapesUsingEncoding(NSUTF8StringEncoding)!)

以上API已被弃用替代方法是

Since above API is deprecated alternative approach is

    let url = NSURL(string: urlString.stringByAddingPercentEncodingWithAllowedCharacters(NSCharacterSet.URLQueryAllowedCharacterSet())!)

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