ios 获取 URL 字符串的域部分？
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Get the domain part of an URL string?
提问by pmerino
I have an NSString with an URL, in this way:
我有一个带有 URL 的 NSString，以这种方式：
http://someurl.com/something
How would I get someurl.comonly?
I've already tried substringToIndexwith no luck :(
我怎么会someurl.com只有？我已经试过了substringToIndex，但没有运气:(
Thanks in advance :)
提前致谢 ：）
回答by Stephen Darlington
Objective-C
目标-C
NSString* urlString = @"http://someurl.com/something";
NSURL* url = [NSURL URLWithString:urlString];
NSString* domain = [url host];
Swift 2
斯威夫特 2
var urlString = "http://someurl.com/something"
var url = NSURL(string: urlString)
var domain = url?.host
Swift 3+
斯威夫特 3+
var urlString = "http://someurl.com/something"
var url = URL(string: urlString)
var domain = url?.host
回答by Deepak Danduprolu
Use
用
[[NSURL URLWithString:@"http://someurl.com/something"] host]
回答by Alexey Lysenko
Swift 4.2
斯威夫特 4.2
I wrote extension for URL to take SLD. Seems, there is n
我为 URL 编写了扩展程序以获取 SLD。好像有n
extension URL {
/// second-level domain [SLD]
///
/// i.e. `msk.ru, spb.ru`
var SLD: String? {
return host?.components(separatedBy: ".").suffix(2).joined(separator: ".")
}
}
回答by Naishta
Swift 4
斯威夫特 4
And if you are using Custom url schemessay for deeplinking, for eg:
如果您使用自定义 url 方案进行深层链接，例如：
myapp:homescreen
(and don't have the "forward slashes with host name" (//www.bbc)), one solution that worked for me to extract "homescreen" is by using the indexmethod below and then pattern matchingto scrape everything after ":"
（并且没有“带有主机名的正斜杠”（//www.bbc）），一种对我有用的提取“主屏幕”的解决方案是通过using the index下面的方法然后pattern matching在之后刮掉所有内容":"
let index = absoluteString.index(absoluteString.startIndex, offsetBy: 5)
String(absoluteString[index...])
url.hostor absoluteURL.hostis nilin this scenario
url.host或者absoluteURL.host是nil在这种情况下
