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@implementation UIView (SaveToPdf) ク​​ラスで正常に動作する次のメソッドがあります。

- (NSData *) toPdfData
{
// Creates a mutable data object for updating with binary data, like a byte array
NSMutableData *pdfData = [NSMutableData data];

// Points the pdf converter to the mutable data object and to the UIView to be converted
UIGraphicsBeginPDFContextToData(pdfData, self.bounds, nil);
UIGraphicsBeginPDFPage();
CGContextRef pdfContext = UIGraphicsGetCurrentContext();


// draws rect to the view and thus this is captured by UIGraphicsBeginPDFContextToData
[self.layer renderInContext:pdfContext];

// remove PDF rendering context
UIGraphicsEndPDFContext();

return pdfData;
}

この方法を使用してビューを PDF に印刷すると、1 つの問題を除いて正常に動作します。私のビューにはUITextViewが含まれており、pdfはそのUITextViewの表示領域のみを印刷します。完全なコンテンツ (つまり、スクロール可能なテキスト) をレンダリングするには PDF が必要です

私はiOS開発に不慣れです。誰かが私を正しい方向に向けてくれれば幸いです。

*注意すべきことの1つは、UIViewに他のサブビュー（ラベル、テキストフィールドなど）があり、そのPDFにも印刷する必要があることです。これは現在正常に機能し、[self.layer renderInContext:pdfContext]; を使用するだけでレイアウトが PDF に保持されます。メインビューはすべてのサブビューをループするため..

ありがとうございました

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3 に答える 3

1

ページに収まる限り多くのテキストを描画しても問題なく、UITextView のテキストが PDF で切り取られるという問題がある場合は、UITextView のスクロールを無効にする必要があります。Interface Builder またはプログラムで次のいずれかを行います。

textview.scrollEnabled = NO;

scrollEnabled を に設定するYESと、PDF でテキストが途切れてしまいます。スクロールせずに、少なくとも 1 ページに収まる程度のテキスト全体を取得します。

複数のページにテキストを生成する必要がある場合は、他の回答が示すように、要素を PDF 描画コンテキストに個別に描画する必要があると思います。

于 2015-06-13T14:08:32.627 に答える
0

UIView コンテンツから pdf を生成するために、このコードを作成しました。これがあなたを助けますように。

#define kBorderInset            20.0
#define kBorderWidth            1.0
#define kMarginInset            10.0

//Line drawing
#define kLineWidth              1.0

    - (IBAction)generatePdfButtonPressed
{
 pageSize = CGSizeMake(612, 792);
 NSString *fileName = @"profileInfo.pdf";
 NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
 NSString *documentsDirectory = [paths objectAtIndex:0];
 NSString *pdfFileName = [documentsDirectory stringByAppendingPathComponent:fileName];

 [self generatePdfWithFilePath:pdfFileName];
}

- (void) generatePdfWithFilePath: (NSString *)thefilePath
{
 UIGraphicsBeginPDFContextToFile(thefilePath, CGRectZero, nil);

 NSInteger currentPage = 0;
 BOOL done = NO;
 do
 {
  // Mark the beginning of a new page.
  UIGraphicsBeginPDFPageWithInfo(CGRectMake(0, 0, pageSize.width, pageSize.height), nil);

  // Draw a page number at the bottom of each page.
  currentPage++;
  [self drawPageNumber:currentPage];

  //Draw a border for each page.
  [self drawBorder];

  //Draw text fo our header.
  [self drawHeader];

  //Draw a line below the header.
  [self drawLine];

  //Draw some text for the page.
  if (profileInfo!=nil) 
  {
   NSString *stringwithInfo=[NSString stringWithFormat:@"Headline: %@\nFirstname: %@\nLastName : %@\nSiteStandardProfileRequest:\n%@",[profileInfo valueForKey:@"headline"],[profileInfo valueForKey:@"firstName"],[profileInfo valueForKey:@"lastName"],[[profileInfo valueForKey:@"siteStandardProfileRequest"]valueForKey:@"url"]];


   [self drawText:stringwithInfo];
  }

  //Draw an image
  [self drawImage];
  done = YES;
 }
 while (!done);

 // Close the PDF context and write the contents out.
 UIGraphicsEndPDFContext();
}

- (void) drawBorder
{
 CGContextRef    currentContext = UIGraphicsGetCurrentContext();
 UIColor *borderColor = [UIColor brownColor];
 CGRect rectFrame = CGRectMake(kBorderInset, kBorderInset, pageSize.width-kBorderInset*2, pageSize.height-kBorderInset*2);
 CGContextSetStrokeColorWithColor(currentContext, borderColor.CGColor);
 CGContextSetLineWidth(currentContext, kBorderWidth);
 CGContextStrokeRect(currentContext, rectFrame);
}


- (void) drawLine
{
 CGContextRef    currentContext = UIGraphicsGetCurrentContext();

 CGContextSetLineWidth(currentContext, kLineWidth);

 CGContextSetStrokeColorWithColor(currentContext, [UIColor blueColor].CGColor);

 CGPoint startPoint = CGPointMake(kMarginInset + kBorderInset, kMarginInset + kBorderInset + 40.0);
 CGPoint endPoint = CGPointMake(pageSize.width - 2*kMarginInset -2*kBorderInset, kMarginInset + kBorderInset + 40.0);

 CGContextBeginPath(currentContext);
 CGContextMoveToPoint(currentContext, startPoint.x, startPoint.y);
 CGContextAddLineToPoint(currentContext, endPoint.x, endPoint.y);

 CGContextClosePath(currentContext);
 CGContextDrawPath(currentContext, kCGPathFillStroke);
}


- (void) drawText:(NSString*)txtTodraw
{
 CGContextRef    currentContext = UIGraphicsGetCurrentContext();
 CGContextSetRGBFillColor(currentContext, 0.0, 0.0, 0.0, 1.0);

 UIFont *font = [UIFont systemFontOfSize:14.0];

 CGSize stringSize = [txtTodraw sizeWithFont:font
                            constrainedToSize:CGSizeMake(pageSize.width - 2*kBorderInset-2*kMarginInset, pageSize.height - 2*kBorderInset - 2*kMarginInset)
                                lineBreakMode:UILineBreakModeWordWrap];

 CGRect renderingRect = CGRectMake(kBorderInset + kMarginInset, kBorderInset + kMarginInset + 50.0, pageSize.width - 2*kBorderInset - 2*kMarginInset, stringSize.height);

 [txtTodraw drawInRect:renderingRect
               withFont:font
          lineBreakMode:UILineBreakModeWordWrap
              alignment:UITextAlignmentLeft];
}


- (void) drawImage
{
 UIImage * demoImage = [UIImage imageNamed:@"demo.png"];
 [demoImage drawInRect:CGRectMake( (pageSize.width - demoImage.size.width/2)/2, 350, demoImage.size.width/2, demoImage.size.height/2)];
}


- (void) drawHeader
{
 CGContextRef    currentContext = UIGraphicsGetCurrentContext();
 CGContextSetRGBFillColor(currentContext, 0.3, 0.7, 0.2, 1.0);

 NSString *textToDraw = @"LinkedIn Profile Info";

 UIFont *font = [UIFont systemFontOfSize:24.0];

 CGSize stringSize = [textToDraw sizeWithFont:font constrainedToSize:CGSizeMake(pageSize.width - 2*kBorderInset-2*kMarginInset, pageSize.height - 2*kBorderInset - 2*kMarginInset) lineBreakMode:UILineBreakModeWordWrap];

 CGRect renderingRect = CGRectMake(kBorderInset + kMarginInset, kBorderInset + kMarginInset, pageSize.width - 2*kBorderInset - 2*kMarginInset, stringSize.height);

 [textToDraw drawInRect:renderingRect withFont:font lineBreakMode:UILineBreakModeWordWrap alignment:UITextAlignmentLeft];
}


- (void)drawPageNumber:(NSInteger)pageNumber
{
 NSString* pageNumberString = [NSString stringWithFormat:@"Page %d", pageNumber];
 UIFont* theFont = [UIFont systemFontOfSize:12];

 CGSize pageNumberStringSize = [pageNumberString sizeWithFont:theFont
                                            constrainedToSize:pageSize
                                                lineBreakMode:UILineBreakModeWordWrap];

 CGRect stringRenderingRect = CGRectMake(kBorderInset,
                                         pageSize.height - 40.0,
                                         pageSize.width - 2*kBorderInset,
                                         pageNumberStringSize.height);

 [pageNumberString drawInRect:stringRenderingRect withFont:theFont lineBreakMode:UILineBreakModeWordWrap alignment:UITextAlignmentCenter];
}

-(void)fillInformationInform:(NSDictionary*)dics
{
 headLineLabel.text=[dics valueForKey:@"headline"];
 NSURL *picUrl=[NSURL URLWithString:[dics valueForKey:@"pictureUrl"]];
 profileImageView.image=[UIImage imageWithData:[NSData dataWithContentsOfURL:picUrl]];

 phoneNoLabel.text=[[[[dics valueForKey:@"phoneNumbers"] valueForKey:@"values"] objectAtIndex:0] valueForKey:@"phoneNumber"];

 cityLabel.text=[[dics valueForKey:@"location"] valueForKey:@"name"];
 emailAddressLabel.text=[dics valueForKey:@"emailAddress"];
 nameLabel.text=[NSString stringWithFormat:@"%@ %@",[dics valueForKey:@"firstName"],[dics valueForKey:@"lastName"]];

 dateOfBirthLabel.text=[NSString stringWithFormat:@"%@-%@-%@",[[dics valueForKey:@"dateOfBirth"]valueForKey:@"day"],[[dics valueForKey:@"dateOfBirth"]valueForKey:@"month"],[[dics valueForKey:@"dateOfBirth"]valueForKey:@"year"]];

 NSDictionary *eduDic=[[NSDictionary alloc] initWithDictionary:[[[dics valueForKey:@"educations"]valueForKey:@"values"]objectAtIndex:0]];

// NSLog(@"education dic is %@",eduDic);

 degreeLabel.text=[eduDic valueForKey:@"degree"];
 durationLabel.text=[NSString stringWithFormat:@"From %@ To %@",[[eduDic valueForKey:@"startDate"]valueForKey:@"year"],[[eduDic valueForKey:@"endDate"]valueForKey:@"year"]];
 fieldOfStudyLabel.text=[eduDic valueForKey:@"fieldOfStudy"];
 collegeLabel.text=[eduDic valueForKey:@"schoolName"];


 destinationLabel.text=[[[[dics valueForKey:@"positions"] valueForKey:@"values"] objectAtIndex:0] valueForKey:@"title"];

 NSArray *skillsArray=[[NSArray alloc] initWithArray:[[dics valueForKey:@"skills"]valueForKey:@"values"]];


 NSString *skillStr=[[NSString alloc] initWithFormat:@""];

 for (NSDictionary *skillDic in skillsArray) 
 {
  if (![skillStr isEqualToString:@""]) {
   skillStr=[skillStr stringByAppendingFormat:@","];
  }
  skillStr=[skillStr stringByAppendingFormat:@"%@",[[skillDic valueForKey:@"skill"]valueForKey:@"name"]];
 }

 NSLog(@"skill string is %@",skillStr);

 skillsLable.text=[NSString stringWithFormat:@"%@",skillStr];

}
于 2013-01-03T06:48:41.653 に答える