URL swift 3无问题
我正在努力解决这个URL问题 如果我编码URL swift 3无问题,url,null,swift3,Url,Null,Swift3,我正在努力解决这个URL问题 如果我编码 let str = feed.address! let url = URL(string: str) 调试器显示给我看 str = (String)"https ://developer.apple.com/news/rss/news.rss" url = (URL?) nil none if I code (for a test) let str = "https://developer.apple.com/news/rss/news.r
let str = feed.address!
let url = URL(string: str)
调试器显示给我看
str = (String)"https ://developer.apple.com/news/rss/news.rss"
url = (URL?) nil none
if I code (for a test)
let str = "https://developer.apple.com/news/rss/news.rss"
let url = URL(string: str)
str = (String)"https ://developer.apple.com/news/rss/news.rss"
url = (URL?) "https://developer.apple.com/news/rss/news.rss"
调试器显示给我看
str = (String)"https ://developer.apple.com/news/rss/news.rss"
url = (URL?) nil none
if I code (for a test)
let str = "https://developer.apple.com/news/rss/news.rss"
let url = URL(string: str)
str = (String)"https ://developer.apple.com/news/rss/news.rss"
url = (URL?) "https://developer.apple.com/news/rss/news.rss"
没关系
有什么帮助吗?从启动到
:
的url字符串的一部分被解析为scheme
和方案
:
空格
是不允许的字符,因此URL无效,因此结果为nil
“https://developer.apple.com/news/rss/news.rss”
是“https”后面的空格,是这个问题中的输入错误还是代码中的输入错误?:)谢谢,我没看到:-)