iPhone字符串操作

是否要从字符串中删除所有HTML内容?如果是这样的话,您可以通过以下方式接近它:

- (void)removeHtml:(NSString *) yourString
{
    NSString *identifiedHtml = nil;

    //Create a new scanner object using your string to parse
    NSScanner *scanner = [NSScanner scannerWithString: yourString];

    while (NO == [scanner isAtEnd])
    {

        // find opening html tag
        [scanner scanUpToString: @"<" intoString:NULL] ; 

        // find closing html tag - store html tag in identifiedHtml variable
        [scanner scanUpToString: @">" intoString: &identifiedHtml] ;

        // use identifiedHtml variable to search and replace with a space
        NSString yourString = 
                 [yourString stringByReplacingOccurrencesOfString:
                             [ NSString stringWithFormat: @"%@>", identifiedHtml]
                             withString: @" "];

    }
    //Log your html-less string
    NSLog(@"%@", yourString);
}

我不确定这是否适用于iPhone(因为initwithhtml:documentattributes:is an appkit addition),但我已经对其进行了Cocoa应用测试。

NSString *text = "your posted html string here";        
NSData *data = [text dataUsingEncoding: NSUnicodeStringEncoding];
NSAttributedString *str = 
   [[[NSAttributedString alloc] initWithHTML: data documentAttributes: nil] autorelease];
NSString *strippedString = [str string];