When I use the TFHpple parser HTML on iPhone , and already find the node ,but the content return is NULL? - iphone

Question

the Code:
NSString *linkStr=#"http://www.voanews.com/content/obama_pledges_aid_to_drought_stricken_farmers/1484380.html";
NSData *data = [[NSData alloc] initWithContentsOfURL:[NSURL URLWithString:linkStr]];
// Create parser
TFHpple *xpathParser = [[TFHpple alloc] initWithHTMLData:data];
//Get all the cells of the 2nd row of the 3rd table
NSArray *elements = [xpathParser searchWithXPathQuery:#"//p[#class='article_date']"];
// Access the first cell
if ([elements count] > 0)
{
TFHppleElement *element = [elements objectAtIndex:0];
// Get the text within the cell tag
NSString *content = [element content];
NSLog(#"VOA = %#",content); //Result : print NULL
}
[xpathParser release];
[data release];
but I use the XPath Helper query the "//p[#class='article_date']" ,it's ok, but in my code the content is null

Answer 1

Running your code example, if I change [element content] for [element text], my output is:
VOA = August 11, 2012
In its Github repo, they mention (at USAGE section):
[e text]; // The text inside the HTML element (the content of the
first text node)
And looking at the source code of the CONTENT method it uses objectForKey, where TFHppleContentKey = "nodeContent". See:
static NSString * const TFHppleNodeContentKey = #"nodeContent"
// Returns this tag's innerHTML content.
- (NSString *) content
{
return [node objectForKey:TFHppleNodeContentKey];
}
It seems that it's safe to use [element text] instead of [element content] in your example.
I hope it helps.