swift实现微博@及#话题#功能

在微博信息流中点击@某人然后跳转到某人的主页，以及点击话题跳到相关话题页，类似于HTML中的文本链接，在iOS中实现方法也差不多，也是往文本中添加文本链接的方式，具体看以下代码

let text:String = "#证人杨幂发福利# 电影《我是证人》#福利#即将在2015-10-25上映咯！转发@电影我是证人 地址(http://www.baidu.com)@杨幂 哟～"
let attributedString:NSMutableAttributedString = NSMutableAttributedString(string:text)
let textRange = NSRange(location: 0, length: text.length)

//规则检查
var ranges:[NSRange] = []
//话题（使用正则匹配出#话题#所在位置）
var reg = try? NSRegularExpression(pattern: "#.+?#", options: [])
reg?.enumerateMatchesInString(text, options: [], range: textRange, usingBlock: {result, flags, ptr in
if let result = result
{
ranges.append(result.range)
}
})
//然后给话题所在的文本添加链接
for range in ranges
{
let subject = (text as NSString).substringWithRange(range)
attributedString.addAttribute(NSLinkAttributeName, value: "yourapp://subject?text=\(subject.URLEncoded)", range: range)
}

//@某人
ranges.removeAll()
reg = try? NSRegularExpression(pattern: "@[^\\s]+", options: [])
reg?.enumerateMatchesInString(text, options: [], range: textRange, usingBlock: {result, flags, ptr in
if let result = result
{
ranges.append(result.range)
}
})
for range in ranges
{
let subject = (text as NSString).substringWithRange(range)
attributedString.addAttribute(NSLinkAttributeName, value: "yourapp://mind?name=\(subject.URLEncoded)", range: range)
}

//文本框
let textView:UITextView = UITextView()
textView.editable = false
textView.frame = CGRectMake(20, 10, view.frame.width - 20, 150)
textView.attributedText = attributedString
textView.linkTextAttributes = [NSForegroundColorAttributeName:UIColor.blueColor()]

view.addSubview(textView)
//在此统一处理

func application(application: UIApplication, openURL url: NSURL, sourceApplication: String?, annotation: AnyObject) -> Bool
{
//在此处理相关链接
//openURL:yourapp://mind?name=%40%E6%9D%A8%E5%B9%82,scheme:yourapp, query:Optional("name=%40%E6%9D%A8%E5%B9%82")
print("openURL:\(url),scheme:\(url.scheme), query:\(url.query)")
return true
}