ios 调用打印机

源码

无意中玩一个demo发现调用了打印机  才发现ios有快速调用打印机的功能.

　　

 if ([UIPrintInteractionController isPrintingAvailable] == YES)
     {
         NSURL *fileURL = document.fileURL; // Document file URL

         if ([UIPrintInteractionController canPrintURL:fileURL] == YES)
         {
             printInteraction = [UIPrintInteractionController sharedPrintController];

             UIPrintInfo *printInfo = [UIPrintInfo printInfo];
             printInfo.duplex = UIPrintInfoDuplexLongEdge;
             printInfo.outputType = UIPrintInfoOutputGeneral;
             printInfo.jobName = document.fileName;

             printInteraction.printInfo = printInfo;
             printInteraction.printingItem = fileURL;
             printInteraction.showsPageRange = YES;

             if (userInterfaceIdiom == UIUserInterfaceIdiomPad) // Large device printing
             {
                 [printInteraction presentFromRect:button.bounds inView:button animated:YES completionHandler:
                     ^(UIPrintInteractionController *pic, BOOL completed, NSError *error)
                     {
                         #ifdef DEBUG
                             if ((completed == NO) && (error != nil)) NSLog(@"%s %@", __FUNCTION__, error);
                         #endif
                     }
                 ];
             }
             else // Handle printing on small device
             {
                 [printInteraction presentAnimated:YES completionHandler:
                     ^(UIPrintInteractionController *pic, BOOL completed, NSError *error)
                     {
                         #ifdef DEBUG
                             if ((completed == NO) && (error != nil)) NSLog(@"%s %@", __FUNCTION__, error);
                         #endif
                     }
                 ];
             }
         }
     }