来自NSString的NSUrl返回null [英] NSUrl from NSString returns null

问题描述

我想从 NSString 解析我的文档目录的位置到 NSUrl 。

I want to parse the location of my Documents Directory to NSUrl from NSString I have.

当我的控制台NSLog（stringURL）

when my console NSLog(stringURL)

i get: "/var/mobile/Applications/2B35D06D-6E4A-40F2-833E-28463A946834/Library/Application Support/MyAppDirectory" as an output.

但是当我这样做时

NSURL* url = [NSURL URLWithString:stringUrl];

和NSLog（url）我得到（null）作为输出。

and NSLog(url) i get (null) as an output.

我在这里做错了什么？

推荐答案

从苹果文档初始化的NSURL对象URLString。如果URL字符串格式错误或为nil，则返回nil。您的stringURL不是正确形成的网址。供参考： https://developer.apple.com/library/mac/documentation/Cocoa/Reference/Foundation/Classes/NSURL_Class/Reference/Reference.html#//apple_ref/occ/clm/NSURL/ URLWithString ：

From the apple documentation "An NSURL object initialized with URLString. If the URL string was malformed or nil, returns nil." Your stringURL isn't a correct formed url. For reference: https://developer.apple.com/library/mac/documentation/Cocoa/Reference/Foundation/Classes/NSURL_Class/Reference/Reference.html#//apple_ref/occ/clm/NSURL/URLWithString:

您实际想要使用的是： fileURLWithPath：isDirectory：而不是。

What you actually want to use is: fileURLWithPath: isDirectory: instead.

NSURL *url = [NSURL fileURLWithString:[stringURL stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding] isDirectory:YES];
NSLog(@"%@", url);

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