Question

这里我打印尺寸为'pageSize = CGSizeMake（640,832）;'的pdf。这个尺寸大于A4尺寸的页面。所以我会切断一些文字（意味着它不会打印整页）。

在使用MAC打印相同的pdf时，它将在选项的帮助下打印整页（缩放以适合）。所以任何人都可以帮助我摆脱这个问题..在IOS sdk中是否有任何选项可以适应规模。

这是我的代码..

-(void)printItem
{

NSArray *aArrPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) ;
NSString *aStr = [[aArrPaths objectAtIndex:0] stringByAppendingPathComponent:[NSString stringWithFormat:@"PropertyReport_%d.pdf",self.propertyId]];

  // NSString *aStr = [[NSBundle mainBundle] pathForResource:@"TRADUZIONE HELP SECTIONS REV2" ofType:@"pdf"];
NSURL *url=[[NSURL alloc] initFileURLWithPath:aStr];
NSData *data=[[NSData alloc] initWithContentsOfURL:url];
printController = [UIPrintInteractionController sharedPrintController];
if(printController && [UIPrintInteractionController canPrintData:data])
{
    printController.delegate = self;
    UIPrintInfo *printInfo = [UIPrintInfo printInfo];
    printInfo.outputType = UIPrintInfoOutputGeneral;
    //printInfo.jobName = [NSString stringWithFormat:@"New Image"];
    printInfo.duplex = UIPrintInfoDuplexLongEdge;

    printController.printInfo = printInfo;
    printController.showsPageRange = YES;

    printController.printingItem = data;




    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);
        }
    };

  //  aWebViewPDF.hidden=FALSE;
    [printController presentAnimated:YES completionHandler:completionHandler];
}

}

谢谢！

Answer 1

听起来很奇怪：

printController.showsPageRange = NO;

这似乎启用了自动缩放，但有时会在作业结束时打印一个额外的空白页。 AirPrint基本上就是巫术。

Answer 2

从PDF的所有页面到scale down的{{1}}只有一个选项，然后打印出来。我已经完成了ratio的所有页面，并将其缩小到要求：

printed format

添加所有三种方法：

pdf into images

NSString *strFilePath = [[NSBundle mainBundle] pathForResource:@"pdftouch" ofType:@"pdf"];
pic.printingItems = [[self allPagesImageFromPDF:strFilePath] copy];

Convert all PDF pages into UIImages

-(NSMutableArray *)allPagesImageFromPDF:(NSString *)strPath
{
  NSMutableArray *arrImages = [NSMutableArray array];
  CGPDFDocumentRef pdf  = CGPDFDocumentCreateWithURL((__bridge CFURLRef)[NSURL fileURLWithPath:strPath]);
  NSInteger numberOfPages = CGPDFDocumentGetNumberOfPages(pdf);
  for (NSInteger pageIndex = 1; pageIndex <= numberOfPages;
     pageIndex++)
  {
    UIImage *img = [self getThumbForPage:pdf pageIndex:pageIndex];
    [arrImages addObject:[self resizedImage:img]];
  }
  return arrImages;
}

Resize images

-(UIImage *)resizedImage:(UIImage *)image
{
  UIGraphicsBeginImageContext(CGSizeMake(612, 792)); //A4 size
  [image drawInRect:CGRectMake(0,0,612, 792)]; //A4 size
  UIImage *resizedImg = UIGraphicsGetImageFromCurrentImageContext();
  UIGraphicsEndImageContext();
  return resizedImg;
}

编辑：请参阅printing-uiimage-using-airprint-causes-cut-off-content

使用AirPrint打印Pdf会导致截止内容

2 个答案: