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
}
