Как передать PDF как вход в принтер

Question

I m Новое в разработке iPhone, и мне нужно распечатать UIView. поэтому я преобразован UIView в PDF и работать хорошо для меня .. , но я не знаю, как передать этот PDF в принтер так, чтобы распечатать, может любую помощь в решении этого

Спасибо заранее

мой код:

- (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; 

} 

// принтер код

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

Вы можете распечатать PDF с помощью этого кода ....

#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

Если кто-то смотрит один и тот же код в быстрой 4, то здесь:

@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) 
    } 
}