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
                    }
                ];
            }
        }
    }