iphone - 以编程方式创建 pdf 的示例代码

Question

我是 iPhone 新手。

是否有任何示例代码或教程。

还需要 plist 的示例代码

请帮我。

Answer 1

在这里，我有如何在 iPhone 中创建 .pdf 文件的最佳示例 :)

PdfGenerationDemoViewController.h

#import <UIKit/UIKit.h>

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

//Line drawing
#define kLineWidth              1.0

@interface PdfGenerationDemoViewController : UIViewController
{
    CGSize pageSize;
}

- (IBAction)generatePdfButtonPressed:(id)sender;

@end

PdfGenerationDemoViewController.m

#import "PdfGenerationDemoViewController.h"

@interface PdfGenerationDemoViewController (Private)
- (void) generatePdfWithFilePath: (NSString *)thefilePath;
- (void)drawPageNumber:(NSInteger)pageNum;
- (void) drawBorder;
- (void) drawText;
- (void) drawLine;
- (void) drawHeader;
- (void) drawImage;
@end

@implementation PdfGenerationDemoViewController

#pragma mark - Private Methods
- (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)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) drawHeader
{
    CGContextRef    currentContext = UIGraphicsGetCurrentContext();
    CGContextSetRGBFillColor(currentContext, 0.3, 0.7, 0.2, 1.0);

    NSString *textToDraw = @"Pdf Demo - iOSLearner.com";

    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) drawText
{
    CGContextRef    currentContext = UIGraphicsGetCurrentContext();
    CGContextSetRGBFillColor(currentContext, 0.0, 0.0, 0.0, 1.0);

    NSString *textToDraw = @"Lorem ipsum dolor sit amet, consectetuer adipiscing elit, sed diam nonummy nibh euismod tincidunt ut laoreet dolore magna aliquam erat volutpat. Ut wisi enim ad minim veniam, quis nostrud exerci tation ullamcorper suscipit lobortis nisl ut aliquip ex ea commodo consequat. Duis autem vel eum iriure dolor in hendrerit in vulputate velit esse molestie consequat, vel illum dolore eu feugiat nulla facilisis at vero eros et accumsan et iusto odio dignissim qui blandit praesent luptatum zzril delenit augue duis dolore te feugait nulla facilisi. Nam liber tempor cum soluta nobis eleifend option congue nihil imperdiet doming id quod mazim placerat facer possim assum. Typi non habent claritatem insitam; est usus legentis in iis qui facit eorum claritatem. Investigationes demonstraverunt lectores legere me lius quod ii legunt saepius. Claritas est etiam processus dynamicus, qui sequitur mutationem consuetudium lectorum. Mirum est notare quam littera gothica, quam nunc putamus parum claram, anteposuerit litterarum formas humanitatis per seacula quarta decima et quinta decima. Eodem modo typi, qui nunc nobis videntur parum clari, fiant sollemnes in futurum.";

    UIFont *font = [UIFont systemFontOfSize:14.0];

    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 + 50.0, pageSize.width - 2*kBorderInset - 2*kMarginInset, stringSize.height);

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

}

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

    NSInteger currentPage = 0;
    BOOL done = NO;
    do 
    {
        //Start 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.
        [self drawText];

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

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

#pragma mark - View lifecycle

- (void)viewDidLoad
{
    [super viewDidLoad];
}

- (void)viewDidUnload
{
    [super viewDidUnload];
}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    return (interfaceOrientation == UIInterfaceOrientationPortrait);
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
}

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

    [self generatePdfWithFilePath:pdfFileName];
}
@end

Answer 2

Apple 的绘图和打印指南是您的朋友。基本上，如果您可以在屏幕上绘图，则可以在 iOS（和 Mac OS X）上绘制到 PDF。

Answer 3

您可能会发现它有点高级教程，但Ray Wenderlich 的这个精美教程将真正帮助您，就 plit 而言，您应该先谷歌它，因为您可以找到很多。

最良好的祝愿，

法鲁克·贾维德

Answer 4

CFURLRef pdfURL = CFBundleCopyResourceURL(CFBundleGetMainBundle(), CFSTR("iPhoneAppProgrammingGuide.pdf"), NULL, NULL);
        PDFfile = CGPDFDocumentCreateWithURL((CFURLRef)pdfURL);
        CFRelease(pdfURL);    
 CGPDFPageRef page = CGPDFDocumentGetPage(PDFfile,currentpage);

        context = UIGraphicsGetCurrentContext();
        CGContextSaveGState(context);
        CGContextSetRGBFillColor(context, 1.0, 1.0, 1.0, 1.0);
        CGContextFillRect(context,self.bounds);   
        CGContextTranslateCTM(context, -1.0, [self bounds].size.height);
        CGContextScaleCTM(context, 1.0, -1.0);
        CGContextConcatCTM(context, CGPDFPageGetDrawingTransform(page,  kCGPDFArtBox, [self bounds], 0, true));
        CGContextDrawPDFPage(context, page);    
        CGContextRestoreGState(context);
        CGAffineTransform transform = aspectFit(CGPDFPageGetBoxRect(page, kCGPDFMediaBox),
                                                    CGContextGetClipBoundingBox(context));

           CGContextConcatCTM(context, transform);
             UIGraphicsBeginImageContext(CGSizeMake(self.bounds.size.width, self.bounds.size.height));