How to transfer PDF as printer input

Question

I m New to iPhone development, and I need to print a UIView. so I converted the UIView to PDF and it works great for me. but I don’t know how to transfer this PDF to the printer so that it prints, can anyone help to solve this

Thanks in advance

my code is:

- (void)createPDFfromUIView:(UIView*)aView saveToDocumentsWithFileName:(NSString*)aFilename { NSMutableData *pdfData = [NSMutableData data]; UIGraphicsBeginPDFContextToData(pdfData, aView.bounds, nil); UIGraphicsBeginPDFPage(); CGContextRef pdfContext = UIGraphicsGetCurrentContext(); [aView.layer renderInContext:pdfContext]; UIGraphicsEndPDFContext(); NSArray* documentDirectories = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask,YES); NSString* documentDirectory = [documentDirectories objectAtIndex:0]; NSString* documentDirectoryFilename = [documentDirectory stringByAppendingPathComponent:aFilename]; [pdfData writeToFile:documentDirectoryFilename atomically:YES]; NSLog(@"documentDirectoryFileName: %@",documentDirectoryFilename); } -(void)getPDF{ NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask, YES); NSString *documentsPath = [paths objectAtIndex:0]; NSString *filePath = [documentsPath stringByAppendingPathComponent:@"myPdf"]; NSLog(@"filePath: %@",filePath); NSData *pngData = [NSData dataWithContentsOfFile:filePath]; [displayPDFView loadData:pngData MIMEType:@"application/pdf" textEncodingName:@"utf-8" baseURL:nil]; [self.view setBackgroundColor:[UIColor colorWithWhite:0.5 alpha:0.0]]; displayPDFView.hidden = NO; } 

// printer code

 NSString *path = [[NSBundle mainBundle] pathForResource:@"demo" ofType:@"png"]; NSData *dataFromPath = [NSData dataWithContentsOfFile:path]; UIPrintInteractionController *printController = [UIPrintInteractionController sharedPrintController]; if(printController && [UIPrintInteractionController canPrintData:dataFromPath]) { printController.delegate = self; UIPrintInfo *printInfo = [UIPrintInfo printInfo]; printInfo.outputType = UIPrintInfoOutputGeneral; printInfo.jobName = [path lastPathComponent]; printInfo.duplex = UIPrintInfoDuplexLongEdge; printController.printInfo = printInfo; printController.showsPageRange = YES; printController.printingItem = dataFromPath; void (^completionHandler)(UIPrintInteractionController *, BOOL, NSError *) = ^(UIPrintInteractionController *printController, BOOL completed, NSError *error) { if (!completed && error) { NSLog(@"FAILED! due to error in domain %@ with error code %u", error.domain, error.code); } }; [printController presentFromRect:btnPrint.frame inView:btnPrint.superview animated:YES completionHandler:completionHandler]; } 

Answer 1

You can print PDF with this code ....

  #if (READER_ENABLE_PRINT == TRUE) // Option Class printInteractionController = NSClassFromString(@"UIPrintInteractionController"); if ((printInteractionController != nil) && [printInteractionController isPrintingAvailable]) { NSURL *fileURL = document.fileURL; // Document file URL printInteraction = [printInteractionController sharedPrintController]; if ([printInteractionController canPrintURL:fileURL] == YES) { UIPrintInfo *printInfo = [NSClassFromString(@"UIPrintInfo") printInfo]; printInfo.duplex = UIPrintInfoDuplexLongEdge; printInfo.outputType = UIPrintInfoOutputGeneral; printInfo.jobName = document.fileName; printInteraction.printInfo = printInfo; printInteraction.printingItem = fileURL; printInteraction.showsPageRange = YES; [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 } ]; } } #endif // 

Answer 2

If someone is looking for the same code in swift 4, here it is:

 @IBAction func airPrint(_ sender: Any) { //call method below to generate pdf file createPdfFromView(aView: self.view, saveToDocumentsWithFileName: "sample") var paths = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true) let documentsPath: String = paths[0] let filePath = URL(fileURLWithPath: documentsPath).appendingPathComponent("sample") print("filePath: \(filePath.path)") //AirPrint let printController = UIPrintInteractionController.shared let printInfo = UIPrintInfo(dictionary : nil) printInfo.duplex = .longEdge printInfo.outputType = .general printInfo.jobName = "Test" printController.printInfo = printInfo printController.printingItem = filePath printController.present(animated : true, completionHandler : nil) } func createPdfFromView(aView: UIView, saveToDocumentsWithFileName fileName: String) { let pdfData = NSMutableData() UIGraphicsBeginPDFContextToData(pdfData, aView.bounds, nil) UIGraphicsBeginPDFPage() guard let pdfContext = UIGraphicsGetCurrentContext() else { return } aView.layer.render(in: pdfContext) UIGraphicsEndPDFContext() if let documentDirectories = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true).first { let documentsFileName = documentDirectories + "/" + fileName debugPrint(documentsFileName) pdfData.write(toFile: documentsFileName, atomically: true) } }