在TableView中突出显示搜索字母-iOS

Question

我在UISearchBar中实现了UITableView。现在，我要突出显示搜索列表的结果。例如，如果我输入三个字母，则这些字母应在从搜索栏下拉的结果TableView中突出显示。

Answer 1

func boldSearchResult（searchString：String，resultString：String）-> NSMutableAttributedString {

let attributedString: NSMutableAttributedString = NSMutableAttributedString(string: resultString)
let Desiredpattern = searchString.lowercaseString
let range: NSRange = NSMakeRange(0, resultString.characters.count)

let regex = try! NSRegularExpression(Desiredpattern: Desiredpattern, options: NSRegularExpressionOptions())

regex.enumerateMatchesInString(resultString.lowercaseString, options: NSMatchingOptions(), range: range) { (textCheckingResult, matchingFlags, stop) -> Void in
    let Range = textCheckingResult?.range
    attributedString.addAttribute(NSFontAttributeName, value: UIFont.customBoldedFontNameWithSize(15.0), range: Range!)
}

return attributedString

}

cell.YourLabel.attributedText = boldSearchResult(mySearchText, resultString: textForBolding)