uiWebView printing a pdf - pdf

Question

Inside of uiwebview, what is a good way print a pdf document?
The pdf is accessible via a url or it can be loaded inside of an iframe.
Using the standard javascript widnow.print() functions will not work.
I am considering using a javascript bridge such as:
- (BOOL)webView:(UIWebView*)webView shouldStartLoadWithRequest:(NSURLRequest*)request navigationType:(UIWebViewNavigationType)navigationType {
NSURL *URL = [request URL];
if ([[URL scheme] isEqualToString:#"native"]) {
NSString *urlString = [[request URL] absoluteString];
NSArray *urlParts = [urlString componentsSeparatedByString:#":"];
NSString *cmd = [urlParts objectAtIndex:1];
if ( [cmd isEqualToString:#"printPdf"] ) {
// [self dosomething];
}
}
return YES;
}
At this point I need some sort of xcode function which accept a path to the pdf and send it the airPrinter.
Is this a good approach? I am searching examples of how to print a pdf inside a uiWebView.

Answer 1

As I've earned the tumbleweed badge for no up votes and no responses, I'll post my solution.
This fetches the pdf doc and opens the airPrint dialog--all within a uiWebView.
So if IOS would simply allow the javascript window.print() to function inside of uiWebView, my app would not be setting in the app store waiting for approval and re-release.
Anyway, here's a working solution:
- (void)printInit:(NSString *)parm {
UIPrintInteractionController *controller = [UIPrintInteractionController sharedPrintController];
if(!controller){
NSLog(#"Couldn't get shared UIPrintInteractionController!");
return;
}
NSString *base = #"https://someurl.com/";
NSString *ustr = [base stringByAppendingString:parm];
//NSURL *url = [NSURL fileURLWithPath:ustr];
NSURL *url = [NSURL URLWithString:ustr];
NSData *thePdf = [NSData dataWithContentsOfURL:url];
controller.printingItem = thePdf;
UIPrintInfo *printInfo = [UIPrintInfo printInfo];
printInfo.outputType = UIPrintInfoOutputGeneral;
printInfo.jobName = #"PDFDoc";
controller.printInfo = printInfo;
void (^completionHandler)(UIPrintInteractionController *, BOOL, NSError *) =
^(UIPrintInteractionController *printController, BOOL completed, NSError *error) {
if (!completed && error) {
NSLog(#"FAILED! error = %#",[error localizedDescription]);
}
};
CGRect rect = CGRectMake(310, 5, 100, 5);
[controller presentFromRect:rect inView:self.webView animated:YES completionHandler:completionHandler];
}