Printing an Image from UIview

  NSURL   *imageURL;

- (void)printImage:(id)sender {

  // Obtain the shared UIPrintInteractionController

  UIPrintInteractionController *controller = [UIPrintInteractionController sharedPrintController];

  if(!controller){

    NSLog(@"Couldn't get shared UIPrintInteractionController!");

    return;

  }

  // We need a completion handler block for printing.

  UIPrintInteractionCompletionHandler completionHandler = ^(UIPrintInteractionController *printController, BOOL completed, NSError *error) {

    if(completed && error)

      NSLog(@"FAILED! due to error in domain %@ with error code %u", error.domain, error.code);

  };

  

  // Obtain a printInfo so that we can set our printing defaults.

  UIPrintInfo *printInfo = [UIPrintInfo printInfo];

  UIImage *image = ((UIImageView *)self.view).image;

  // This application prints photos. UIKit will pick a paper size and print

  // quality appropriate for this content type.

  printInfo.outputType = UIPrintInfoOutputPhoto;

  // The path to the image may or may not be a good name for our print job

  // but that's all we've got.

  printInfo.jobName = [[self.imageURL path] lastPathComponent];

  

  // If we are performing drawing of our image for printing we will print

  // landscape photos in a landscape orientation.

  if(!controller.printingItem && image.size.width > image.size.height)

    printInfo.orientation = UIPrintInfoOrientationLandscape;

  

  // Use this printInfo for this print job.

  controller.printInfo = printInfo;

  

  //  Since the code below relies on printingItem being zero if it hasn't

  //  already been set, this code sets it to nil. 

  controller.printingItem = nil;

  

  

#if DIRECT_SUBMISSION

  // Use the URL of the image asset.

    if(self.imageURL && [UIPrintInteractionController canPrintURL:self.imageURL])

      controller.printingItem = self.imageURL;

#endif

  

  // If we aren't doing direct submission of the image or for some reason we don't

  // have an ALAsset or URL for our image, we'll draw it instead.

  if(!controller.printingItem){

    // Create an instance of our PrintPhotoPageRenderer class for use as the

    // printPageRenderer for the print job.

    PrintPhotoPageRenderer *pageRenderer = [[PrintPhotoPageRenderer alloc]init];

    // The PrintPhotoPageRenderer subclass needs the image to draw. If we were taking 

    // this path we use the original image and not the fullScreenImage we obtained from 

    // the ALAssetRepresentation.

    pageRenderer.imageToPrint = ((UIImageView *)self.view).image;

    controller.printPageRenderer = pageRenderer;

    [pageRenderer release];

  }

  

  // The method we use presenting the printing UI depends on the type of 

  // UI idiom that is currently executing. Once we invoke one of these methods

  // to present the printing UI, our application's direct involvement in printing

  // is complete. Our delegate methods (if any) and page renderer methods (if any)

  // are invoked by UIKit.

  if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {

    [controller presentFromBarButtonItem:self.printButton animated:YES completionHandler:completionHandler];  // iPad

  }else

    [controller presentAnimated:YES completionHandler:completionHandler];  // iPhone

  

}