如何在objective C中保存HTML字符串中的值？

NSString *htmlString = @"<p>This is a <strong>sample</strong> HTML string.</p>";
NSError *error = nil;
NSAttributedString *attributedString = [[NSAttributedString alloc] initWithData:[htmlString dataUsingEncoding:NSUTF8StringEncoding]
                                                                     options:@{NSDocumentTypeDocumentAttribute: NSHTMLTextDocumentType}
                                                          documentAttributes:nil
                                                                       error:&error];
if (error) {
    NSLog(@"Error converting HTML string: %@", error);
} else {
    NSString *plainText = attributedString.string;
    NSLog(@"Plain text: %@", plainText);
    
    // Save specific values from HTML string
    // Use regular expressions or string processing methods to extract desired values
}