iOS 获取String中的url并用其他颜色显示
这里用textView显示带url的String
fileprivate let detailText =UITextView().then { (textview)in
textview.font = UIFont.systemFont(ofSize:14)
textview.textColor = UIColor(hexString:"#333333")
textview.isEditable =false; //必须禁止输入,否则点击将弹出输入键盘
textview.isScrollEnabled =false;
}
//用这个方法获取url,获取url的数组
private func getUrls(str:String) -> [String] {
varurls = [String]()
// 创建一个正则表达式对象
do{
let dataDetector = try NSDataDetector(types:
NSTextCheckingTypes(NSTextCheckingResult.CheckingType.link.rawValue))
// 匹配字符串,返回结果集
let res = dataDetector.matches(in: str,
options:NSRegularExpression.MatchingOptions(rawValue:0),
range:NSMakeRange(0, str.count))
// 取出结果
for checkingRes in res {
urls.append((str as NSString).substring(with: checkingRes.range))
}
}
catch{
print(error)
}
returnurls
}
//获取url数组
let arr =self.getUrls(str: state.detail)
let attrubuteStr = NSMutableAttributedString(string: state.detail)
if arr.count >0{
for i in arr {
let nsString = NSString(string: state.detail)
let bigRange = nsString.range(of: state.detail)
let range = nsString.range(of: i)
attrubuteStr.addAttribute(NSAttributedStringKey.font, value: UIFont.systemFont(ofSize:14), range: bigRange)
attrubuteStr.addAttribute(NSAttributedStringKey.foregroundColor, value: UIColor(hexString:"#286efa")!, range: range)
attrubuteStr.addAttribute(NSAttributedStringKey.link, value: i, range: range)
}
}else{
let nsString = NSString(string: state.detail)
let bigRange = nsString.range(of: state.detail)
attrubuteStr.addAttribute(NSAttributedStringKey.font, value: UIFont.systemFont(ofSize:14), range: bigRange)
}
self.detailText.attributedText = attrubuteStr
//最后实现textView的代理方法,点击url触发事件
functextView(_textView:UITextView, shouldInteractWith URL:URL, in characterRange:NSRange, interaction:UITextItemInteraction) ->Bool{
self.navigatorService?.navigatorSubject.onNext(NavigatorItem.WebPage("","\(URL)"))
return false
}