iOS, show specific html content from site on web view - html

Question

I would like to retrieve the data from a specific part of the html of a site, and I wrote the following code. Unfortunately, the code is not working. How can I fix this?
the html class name is "topic_content", and every article in applicable site contains it (see the comments in code).
#implementation DetailViewController
....
UIActivityIndicatorView *activityIndicator;
- (void)viewDidLoad {
.....
activityIndicator = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge];
[activityIndicator stopAnimating];
....
[self callDetailNews];
}
-(void)callDetailNews{
....
if ([[Reachability reachabilityForInternetConnection]currentReachabilityStatus]!=NotReachable)
{
// article link :: http://el3en.com/?articles=topic&topic=20840 (token_ID)
// <td class="topic_content" colspan='6' itemprop="articleBody" style="text-align:justify; word-wrap: break-word; width:100%">
// NSString *someHTML = [webView stringByEvaluatingJavaScriptFromString:#"document.getElementsByClassName('box')[0].innerHTML;"];
NSString *articleString = [NSString stringWithFormat:#"http://el3en.com/?articles=topic&topic=%#",token_ID];
NSURL *articleURL = [NSURL URLWithString:articleString];
NSError *error;
NSString *articlePage = [NSString stringWithContentsOfURL:articleURL
encoding:NSASCIIStringEncoding
error:&error];
[_webView loadHTMLString:articlePage baseURL:nil];
//NSString *someHTML = [_webView stringByEvaluatingJavaScriptFromString:#"document.getElementsByClassName('topic_content')[0].innerHTML;"];
//NSLog(#"Content : %#",someHTML);
}
.....
}
- (void)webViewDidStartLoad:(UIWebView *)webView {
[activityIndicator startAnimating];
self.webView.hidden=true;
}
- (void)webViewDidFinishLoad:(UIWebView *)webView {
[self.webView stringByEvaluatingJavaScriptFromString:#"document.getElementsByClassName('topic_content')[0].sinnerHTML;"];
[activityIndicator stopAnimating];
self.webView.hidden=false;
}
Thanks

Answer 1

You should use innerHtml instead sinnerHtml, besides this you need to get the string and load this string into another webview. Pls see example
#import "ViewController.h"
#interface ViewController ()
#property (strong, nonatomic) IBOutlet UIWebView *fakeView;
#end
#implementation ViewController
UIActivityIndicatorView *activityIndicator;
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
activityIndicator = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge];
[activityIndicator stopAnimating];
[self callDetailNews];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
-(void)callDetailNews{
if ([[Reachability reachabilityForInternetConnection]currentReachabilityStatus]!=NotReachable)
{
// article link :: http://el3en.com/?articles=topic&topic=20840 (token_ID)
// <td class="topic_content" colspan='6' itemprop="articleBody" style="text-align:justify; word-wrap: break-word; width:100%">
// NSString *someHTML = [webView stringByEvaluatingJavaScriptFromString:#"document.getElementsByClassName('box')[0].innerHTML;"];
NSString *articleString = [NSString stringWithFormat:#"http://el3en.com/?articles=topic&topic=%#",#"20840"];
NSURL *articleURL = [NSURL URLWithString:articleString];
NSError *error;
NSString *articlePage = [NSString stringWithContentsOfURL:articleURL
encoding:NSASCIIStringEncoding
error:&error];
NSLog(#"Request %#",articleURL);
self.fakeView = [[UIWebView alloc] initWithFrame:CGRectMake(0, 0, 1024, 768)];
self.fakeView.delegate = self;
[self.fakeView loadRequest:[NSURLRequest requestWithURL:articleURL]];
//NSString *someHTML = [_webView stringByEvaluatingJavaScriptFromString:#"document.getElementsByClassName('topic_content')[0].innerHTML;"];
//NSLog(#"Content : %#",someHTML);
}
}
- (void)webViewDidStartLoad:(UIWebView *)webView {
[activityIndicator startAnimating];
self.webView.hidden=true;
}
-(void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error {
NSLog(#"error %#" ,[error description]);
}
- (void)webViewDidFinishLoad:(UIWebView *)webView {
if(webView == self.fakeView) {
NSString* javascriptString = [self.fakeView stringByEvaluatingJavaScriptFromString:#"document.getElementsByClassName('topic_content')[0].innerHTML"];
NSLog(#"%#",javascriptString);
[self.webView loadHTMLString:javascriptString baseURL:[NSURL URLWithString:#""]];
self.fakeView = nil;
}else{
[activityIndicator stopAnimating];
self.webView.hidden=false;
}
}
#end