Cách chuyển PDF dưới dạng đầu vào cho máy in

Question

I m Mới đối với sự phát triển của iPhone và tôi cần in UIView. vì vậy tôi chuyển UIView vào PDF và nó làm việc tốt cho tôi .. nhưng tôi không biết làm thế nào để vượt qua PDF này để máy in để nó in, có thể bất kỳ một sự giúp đỡ trong việc giải quyết này

Cảm ơn trước

mã của tôi là:

- (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; 

} 

// máy in mã

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

Bạn có thể in pdf bởi mã này ....

#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

Nếu ai đó tìm kiếm cùng mã trong nhanh chóng 4 ở đây là:

@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) 
    } 
}