替换URL中出现的空格

Question

我在iPhone应用程序中有一个URL可供使用。但问题是它在URL中有一些空格。我想用'％20'替换空格。我知道有stringByReplacingOccurencesOfString和stringByAddingPercentEscapesUsingEncoding方法。我也用过它们。但他们不适合我。空格被一些不寻常的值取代。

我在NSString的一个实例上应用这些方法。

Answer 1

从url替换空间的正确格式是：

目标C.

NSString *urlString;//your url string.

urlString = [originalUrl stringByReplacingOccurrencesOfString:@" " withString:@"%20"];

要么

urlString = [originalUrl stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];

iOS 9及更高版本

urlString = [originalUrl stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLQueryAllowedCharacterSet]];

斯威夫特：

var originalUrl = "https://google.com"
var urlString = originalString.addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed)

ios 9及更高版本

var urlString :String = originalUrl.stringByAddingPercentEncodingWithAllowedCharacters(NSCharacterSet.URLQueryAllowedCharacterSet())!

斯威夫特4

var urlString = originalString.addingPercentEncoding(withAllowedCharacters: CharacterSet.urlQueryAllowed)

Swift 4.2

var urlString = originalString.addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed)

Answer 2

Swift 2.0

let originalUrl = "http://myurl.com/my photo.png"
let urlNew:String = urlReq.stringByAddingPercentEncodingWithAllowedCharacters( NSCharacterSet.URLQueryAllowedCharacterSet())! 

输出：

http://myurl.com/my%20photo.png

Answer 3

要替换SWIFT 3中的出现：

let updatedUrl = originalUrl.addingPercentEncoding(withAllowedCharacters: NSCharacterSet.urlQueryAllowed)

Answer 4

斯威夫特4

用replacementOccurrences方法替换空格的另一种方法：

let yourString = "http://myurl.com/my photo.png"
let urlNew:String = yourString.replacingOccurrences(of: " ", with: "%20").trimmed 

这将用'％20'替换空格（“”）

Answer 5

一个Swift 4解决方案。您只需传递一个字符串，它用％20填充空格，并在字符串的开头添加“http：//”。太可爱了！

URL(fileURLWithPath: String) 

Answer 6

斯威夫特5

var urlString = originalString.addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed)

Answer 7

var urlString :String = originalUrl.addingPercentEncoding(withAllowedCharacters: NSCharacterSet.urlQueryAllowed)!

Answer 8

SWIFT 3.1

用replacementOccurrences替换空格的简单方法：

URL = URL.replacingOccurrences(of: " ", with: "", options: .literal, range: nil)

Answer 9

Swift 4，iOS-9

let **urlSearchVal**:String = "top 10 movies"     
let urlString = 

    "https://www.googleapis.com/youtube/v3/search?part=snippet&q=\(urlSearchVal)&key=......&type=video"   
//replace ...... above with your youtube key   
// to ignoring white space in search  
        let UrlString :String = urlString.addingPercentEncoding(withAllowedCharacters: NSCharacterSet.urlQueryAllowed)!