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| NSError *error;
//可以识别url的正则表达式
NSString *regulaStr = @"((http[s]{0,1}|ftp)://[a-zA-Z0-9\.\-]+\.([a-zA-Z]{2,4})(:\d+)?(/[a-zA-Z0-9\.\-~!@#$%^&*+?:_/=<>]*)?)|(www.[a-zA-Z0-9\.\-]+\.([a-zA-Z]{2,4})(:\d+)?(/[a-zA-Z0-9\.\-~!@#$%^&*+?:_/=<>]*)?)";
NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:regulaStr
options:NSRegularExpressionCaseInsensitive
error:&error];
NSArray *arrayOfAllMatches = [regex matchesInString:pasteUrl options:0 range:NSMakeRange(0, [pasteUrl length])];
NSMutableArray *arr=[[NSMutableArray alloc] init];
for (NSTextCheckingResult *match in arrayOfAllMatches){
NSString* substringForMatch;
substringForMatch = [pasteUrl substringWithRange:match.range];
[arr addObject:substringForMatch];
}
|