使用正则提取url(iOS)

直接上代码:

 

　　NSString *string = @"我是大大 www.baidu.com 咪咪咪";    

    NSError *error;

    NSString *regulaStr = @"\b((?:https?://|www\d{0,3}[.]|[a-z0-9.\-]+[.][a-z]{2,4}/)(?:[^\s()<>]+|\(([^\s()<>]+|(\([^\s()<>]+\)))*\))+(?:\(([^\s()<>]+|(\([^\s()<>]+\)))*\)|[^\s`!()\[\]{};:'".,<>???“”‘’]))";

    NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:regulaStr                                                                          options:NSRegularExpressionCaseInsensitive error:&error];

    NSLog(@"error:%@", error);

    NSArray *arrayOfAllMatches = [regex matchesInString:string options:NSMatchingReportCompletion range:NSMakeRange(0, [string length])];

    for (NSTextCheckingResult *match in arrayOfAllMatches)

    {

        NSString* substringForMatch = [string substringWithRange:match.range];

        NSLog(@"substringForMatch");

        NSLog(@"%@", substringForMatch);

    }