[英]Get Imagename from Url in swift
我有这个网址https://storage.googleapis.com/user_avatars/63/img_-qLgH80SBqNhMRYbDQeccg.jpg我只需要来自此链接的qLgH80SBqNhMRYbDQeccg图片名称在ui Image
您可以使用NSURL安全地隔离文件名,然后使用子字符串来获取所需的部分。
let s = "https://storage.googleapis.com/user_avatars/63/img_-qLgH80SBqNhMRYbDQeccg.jpg"
斯威夫特2
if let url = NSURL(string: s),
withoutExt = url.URLByDeletingPathExtension,
name = withoutExt.lastPathComponent {
let result = name.substringFromIndex(name.startIndex.advancedBy(5))
print(result)
}
斯威夫特3
if let url = URL(string: s),
withoutExt = try? url.deletingPathExtension(),
name = withoutExt.lastPathComponent {
let result = name.substring(from: name.index(name.startIndex, offsetBy: 5))
print(result)
}
斯威夫特4
if let url = URL(string: s) {
let withoutExt = url.deletingPathExtension()
let name = withoutExt.lastPathComponent
let result = name.substring(from: name.index(name.startIndex, offsetBy: 5))
print(result)
}
打印:
qLgH80SBqNhMRYbDQeccg
那些使用NSURLComponents
来分解URL的东西:
func parseURLForFileName(url:String) ->String?
{
let components = NSURLComponents(string: url)
if let path:NSString = components?.path
{
let filename = path.lastPathComponent
if let range = filename.rangeOfString("_-")
{
return filename.substringFromIndex(range.endIndex)
}
}
return nil
}
然后你会这样称呼它:
let name = parseURLForFileName("https://storage.googleapis.com/user_avatars/63/img_-qLgH80SBqNhMRYbDQeccg.jpg")
print(name)
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