根据我的应用程序，我创建了 Pdf 文件，但我需要生成多页的 Pdf？这是我用于生成 pdf 的代码。
-(void)drawPDF
{
pagesize = CGSizeMake(612, 792);
NSString *fileName = @"Report.pdf";
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
pdfFileName = [documentsDirectory stringByAppendingPathComponent:fileName];
[self generatePdfWithFilePath:pdfFileName];
}
-(void) generatePdfWithFilePath: (NSString *)thefilePath
{
UIGraphicsBeginPDFContextToFile(thefilePath, CGRectZero, nil);
//开始一个新页面。
UIGraphicsBeginPDFPageWithInfo(CGRectMake(0, 0, pagesize.width, pagesize.height), nil);
//为我们的标题绘制文本。
CGContextRef currentContext = UIGraphicsGetCurrentContext();
CGContextSetRGBFillColor(currentContext, 0.0, 0.0, 0.0, 1.0);
UIFont *font = [UIFont systemFontOfSize:14.0];
int xOrigin = 20;
int yOrigin = 300;
int rowHeight = 50;
int columnWidth = 140;
int numberOfRows = 7;
int numberOfColumns = 4;
[self drawTableAt:CGPointMake(xOrigin, yOrigin) withRowHeight:rowHeight andColumnWidth:columnWidth andRowCount:numberOfRows andColumnCount:numberOfColumns];
[self drawImageAt:CGPointMake(xOrigin, yOrigin) withRowHeight:rowHeight andColumnWidth:columnWidth];
[self drawTableDataAt:CGPointMake(xOrigin, yOrigin) withRowHeight:rowHeight andColumnWidth:columnWidth andRowCount:numberOfRows andColumnCount:numberOfColumns withArray:allinfo];
// [self drawTextAt:CGPointMake(xOrigin, yOrigin) withRowHeight:rowHeight andColumnWidth:columnWidth];
CGSize stringSize = [contents_for_pdf sizeWithFont:font constrainedToSize:CGSizeMake(pagesize.width - 2*kBorderInset-2*kMarginInset, pagesize.height - 2*kBorderInset - 2*kMarginInset) lineBreakMode:NSLineBreakByWordWrapping];
CGRect renderingRect = CGRectMake(kBorderInset + kMarginInset, kBorderInset + kMarginInset + 50.0, pagesize.width - 2*kBorderInset - 2*kMarginInset, stringSize.height);
[contents_for_pdf drawInRect:renderingRect withFont:font lineBreakMode:NSLineBreakByWordWrapping alignment:NSTextAlignmentLeft];
UIGraphicsEndPDFContext();
}