检查UITextView是否包含url (布尔值)或提取Url

import UIKit

func containsURL(text: String) -> Bool {
    let urlPattern = "((https?|ftp)://)?(www\\.)?[a-zA-Z0-9@:%._\\+~#=]{2,256}\\.[a-z]{2,6}\\b([-a-zA-Z0-9@:%_\\+.~#?&//=]*)"
    let regex = try! NSRegularExpression(pattern: urlPattern)
    let range = NSRange(location: 0, length: text.utf16.count)
    return regex.firstMatch(in: text, options: [], range: range) != nil
}

func extractURLs(text: String) -> [String] {
    let urlPattern = "((https?|ftp)://)?(www\\.)?[a-zA-Z0-9@:%._\\+~#=]{2,256}\\.[a-z]{2,6}\\b([-a-zA-Z0-9@:%_\\+.~#?&//=]*)"
    let regex = try! NSRegularExpression(pattern: urlPattern)
    let range = NSRange(location: 0, length: text.utf16.count)
    var urls: [String] = []
    
    regex.enumerateMatches(in: text, options: [], range: range) { match, _, _ in
        if let match = match {
            let url = (text as NSString).substring(with: match.range)
            urls.append(url)
        }
    }
    
    return urls
}

// 示例使用
let textViewText = "这是一个包含URL的文本：https://example.com 和 http://another-example.com"
if containsURL(text: textViewText) {
    print("包含URL")
    let urls = extractURLs(text: textViewText)
    print("提取到的URLs: \(urls)")
} else {
    print("不包含URL")
}