我正在创建一个iPad应用程序,其中需要使用不同的PDF表单。我已经找到了一些使用Quartz2D代码生成PDF文件的方法。但是,我必须通过编程来编写整个表单。将来我可能需要更新PDF表单,因此我需要再次编写代码。所以我听说有一个名为iTextSharp的组件用于 .net pdf 创建 - 是否有类似iOS的东西?这样我就可以使用一些XML模板来创建PDF文件。
请帮忙,谢谢。
请帮忙,谢谢。
- (CGRect) paperRect
{
if (!_generatingPdf)
return [super paperRect];
return UIGraphicsGetPDFContextBounds();
}
- (CGRect) printableRect
{
if (!_generatingPdf)
return [super printableRect];
return CGRectInset( self.paperRect, 20, 20 );
}
- (NSData*) printToPDF
{
_generatingPdf = YES;
NSMutableData *pdfData = [NSMutableData data];
UIGraphicsBeginPDFContextToData( pdfData, CGRectMake(0, 0, 792, 612), nil ); // letter-size, landscape
[self prepareForDrawingPages: NSMakeRange(0, 1)];
CGRect bounds = UIGraphicsGetPDFContextBounds();
for ( int i = 0 ; i < self.numberOfPages ; i++ )
{
UIGraphicsBeginPDFPage();
[self drawPageAtIndex: i inRect: bounds];
}
UIGraphicsEndPDFContext();
_generatingPdf = NO;
// NSString* filename = @"/Volumes/Macintosh HD 2/test.pdf";
// [pdfData writeToFile: filename atomically: YES];
return pdfData;
}
@TomSwift : 我同意他的答案,但我想更好地解释一下
UIWebView
创建 PDF
的方法是加载 HTML 到 yourWebView 或者有可能你的 yourWebView 也会被隐藏以生成 PDF,但过程是相同的UIPrintPageRenderer
的 Category
,以获取 PDF 数据,需要使用 yourWebView.viewPrintFormatter@interface UIPrintPageRenderer (PDF)
- (NSData*) printToPDF;
@end
@implementation UIPrintPageRenderer (PDF)
- (NSData*) printToPDF
{
NSMutableData *pdfData = [NSMutableData data];
UIGraphicsBeginPDFContextToData( pdfData, self.paperRect, nil );
[self prepareForDrawingPages: NSMakeRange(0, self.numberOfPages)];
CGRect bounds = UIGraphicsGetPDFContextBounds();
for ( int i = 0 ; i < self.numberOfPages ; i++ )
{
UIGraphicsBeginPDFPage();
[self drawPageAtIndex: i inRect: bounds];
}
UIGraphicsEndPDFContext();
return pdfData;
}
@end
#define kPaperSizeA4 CGSizeMake(595.2,841.8)
//create print renderer
UIPrintPageRenderer *render = [[UIPrintPageRenderer alloc] init];
[render addPrintFormatter:yourWebView.viewPrintFormatter startingAtPageAtIndex:0];
//provide padding ---- increase these values according to your requirement
float topPadding = 10.0f;
float bottomPadding = 10.0f;
float leftPadding = 10.0f;
float rightPadding = 10.0f;
//provide rect for printing and for actual PDF Rect of page
CGRect printableRect = CGRectMake(leftPadding,
topPadding,
kPaperSizeA4.width-leftPadding-rightPadding,
kPaperSizeA4.height-topPadding-bottomPadding);
CGRect paperRect = CGRectMake(0, 0, kPaperSizeA4.width, kPaperSizeA4.height);
[render setValue:[NSValue valueWithCGRect:paperRect] forKey:@"paperRect"];
[render setValue:[NSValue valueWithCGRect:printableRect] forKey:@"printableRect"];
//category created above is used here
NSData *pdfData = [render printToPDF];
//Save PDF to directory for usage
if (pdfData) {
[pdfData writeToFile:[NSString stringWithFormat:@"%@/tmp.pdf",NSTemporaryDirectory()] atomically: YES];
}
else
{
NSLog(@"PDF couldnot be created");
}