Failed to download and open a PDF file with error failed to find PDF header in ios

Question

I am having an app in which I am opening a PDF file from a url.

I am successfully able to open it in a webView.

Now I want to download that PDF file and sa

Answer 1

try this code for downloading & saving your pdf file

    UIActivityIndicatorView *indicator=[[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleGray];

   [indicator startAnimating];

    NSLog(@"Downloading Started");
    NSString *urlToDownload = @"http://gradcollege.okstate.edu/sites/default/files/PDF_linking.pdf";
    NSURL  *url = [NSURL URLWithString:urlToDownload];
    NSURLRequest *request=[[NSURLRequest alloc] initWithURL:url cachePolicy:NSURLCacheStorageAllowed timeoutInterval:120.0f];

    [NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) {

        [indicator stopAnimating];

        if (!connectionError) {

            if ( data )
            {
                NSArray   *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
                NSString  *documentsDirectory = [paths objectAtIndex:0];

                NSString  *filePath = [NSString stringWithFormat:@"%@/%@", documentsDirectory,@"myfile.pdf"];

                //saving is done on main thread
                dispatch_async(dispatch_get_main_queue(), ^{
                    [data
                     writeToFile:filePath atomically:YES];
                    NSLog(@"File Saved !");

                    NSURL *url = [NSURL fileURLWithPath:filePath];
                    NSURLRequest *requestObj = [NSURLRequest requestWithURL:url];
                    [_rssWebView setUserInteractionEnabled:YES];
                    //[_rssWebView setDelegate:self];
                    [_rssWebView loadRequest:requestObj];
                });
            }
        }

    }];