创建PDF iOS7

本文介绍了创建PDF iOS7的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

在我的iOS应用程序中创建一个pdf programmaicallly我在mobile.tut +上跟随本教程：

to create a pdf programmaticallly inside my iOS app I followed this tutorial on mobile.tut+:

mobile.tutsplus/tutorials/iphone/generating-pdf-documents/

但iOS7中现已弃用了两种方法，但xcode建议使用的方法代替旧方法似乎不起作用。有人有想法吗？

but two methods are now deprecated in iOS7, but what xcode suggest to use instead of old methods doesn't seems to work. somebody have an idea?

谢谢！

- (CGRect)addText:(NSString*)text withFrame:(CGRect)frame fontSize:(float)fontSize{ UIFont *font = [UIFont fontWithName:@"HelveticaNeue-Light" size:fontSize]; NSMutableParagraphStyle *paragraph = [[NSMutableParagraphStyle alloc] init]; paragraph.alignment = NSTextAlignmentNatural; NSDictionary*attributi = @{ NSForegroundColorAttributeName: [UIColor blackColor],NSFontAttributeName: font, NSParagraphStyleAttributeName: paragraph}; NSStringDrawingContext* drawCont = [[NSStringDrawingContext alloc]init]; drawCont.minimumScaleFactor = 0.0; //IOS6 deprecated method // CGSize stringSize = [text sizeWithFont:font constrainedToSize:CGSizeMake(_pageSize.width - 2*20-2*20, _pageSize.height - 2*20 - 2*20) lineBreakMode:NSLineBreakByWordWrapping]; //IOS7 method suggested by xcode CGRect stringSIZ = [text boundingRectWithSize:CGSizeMake(_pageSize.width - 2*20-2*20, _pageSize.height - 2*20 - 2*20) options:NSStringDrawingUsesLineFragmentOrigin attributes:attributi context:drawCont]; float textWidth = frame.size.width; if (textWidth < stringSIZ.size.width) textWidth = stringSIZ.size.width; if (textWidth > _pageSize.width) textWidth = _pageSize.width - frame.origin.x; CGRect renderingRect = CGRectMake(frame.origin.x, frame.origin.y, textWidth, stringSIZ.size.height); //IOS6 deprecated method // [text drawInRect:renderingRect // withFont:font // lineBreakMode:NSLineBreakByWordWrapping // alignment:NSTextAlignmentNatural]; //IOS7 method suggested by xcode [text drawInRect:renderingRect withAttributes:attributi]; frame = CGRectMake(frame.origin.x, frame.origin.y, textWidth, stringSIZ.size.height); return frame; }

推荐答案

我创建自己的类在iOS7中尽可能简单地创建pdf。如果有人需要它，这里是：

I create my own class to create pdf as easy as possible in iOS7. if somebody need it, here it is:

PDFHelper.h

PDFHelper.h

#import <Foundation/Foundation.h> @interface PDF : NSObject{ } @property(nonatomic, readwrite) CGSize size; @property(nonatomic, strong) NSMutableArray *headerRect; @property(nonatomic, strong) NSMutableArray *header; @property(nonatomic, strong) NSMutableArray *imageArray; @property(nonatomic, strong) NSMutableArray *imageRectArray; @property(nonatomic, strong) NSMutableArray *textArray; @property(nonatomic, strong) NSMutableArray *textRectArray; @property(nonatomic, strong) NSMutableData *data; + (UIImage *)imageWithImage:(UIImage *)image scaledToSize:(CGSize)newSize; // i metodi vanno invocati nel seguente ordine: -(void)initContent; -(void)addImageWithRect:(UIImage*)image inRect:(CGRect)rect; -(void)addTextWithRect:(NSString*)text inRect:(CGRect)rect; -(void)addHeadertWithRect:(NSString *)text inRect:(CGRect)rect; - (void) drawText; - (void) drawHeader; - (void) drawImage; - (NSMutableData*) generatePdfWithFilePath: (NSString *)thefilePath; @end

PDFHelper.m

PDFHelper.m

#import "PDF.h" @implementation PDF @synthesize size, imageArray, header, imageRectArray, textArray, textRectArray, data, headerRect; -(void)initContent{ imageArray = [[NSMutableArray alloc]init]; imageRectArray = [[NSMutableArray alloc]init]; textArray = [[NSMutableArray alloc]init]; textRectArray = [[NSMutableArray alloc]init]; header = [[NSMutableArray alloc]init]; headerRect = [[NSMutableArray alloc]init]; data = [NSMutableData data]; // data = [NSMutableData data]; } - (void) drawHeader { for (int i = 0; i < [header count]; i++) { CGContextRef currentContext = UIGraphicsGetCurrentContext(); CGContextSetRGBFillColor(currentContext, 0.0, 0.0, 0.0, 1.0); NSString *textToDraw = [header objectAtIndex:i]; NSLog(@"Text to draw: %@", textToDraw); CGRect renderingRect = [[headerRect objectAtIndex:i]CGRectValue]; NSLog(@"x of rect is %f", renderingRect.origin.x); UIFont*font = [UIFont fontWithName:@"HelveticaNeue-Light" size:30.0]; UIColor*color = [UIColor colorWithRed:255/255.0 green:79/255.0 blue:79/255.0 alpha:1.0]; NSDictionary*att = @{NSFontAttributeName: font, NSForegroundColorAttributeName:color}; NSStringDrawingContext *context = [NSStringDrawingContext new]; context.minimumScaleFactor = 0.1; // [textToDraw drawInRect:renderingRect withAttributes:att]; [textToDraw drawWithRect:renderingRect options:NSStringDrawingUsesLineFragmentOrigin attributes:att context:context]; } } -(void)drawImage{ for (int i = 0; i < [imageArray count]; i++) { [[imageArray objectAtIndex:i] drawInRect:[[imageRectArray objectAtIndex:i]CGRectValue]]; } } - (void) drawText { for (int i = 0; i < [textArray count]; i++) { CGContextRef currentContext = UIGraphicsGetCurrentContext(); CGContextSetRGBFillColor(currentContext, 0.0, 0.0, 0.0, 1.0); NSString *textToDraw = [textArray objectAtIndex:i]; NSLog(@"Text to draw: %@", textToDraw); CGRect renderingRect = [[textRectArray objectAtIndex:i]CGRectValue]; NSLog(@"x of rect is %f", renderingRect.origin.x); UIFont*font = [UIFont fontWithName:@"HelveticaNeue-Light" size:22.0]; UIColor*color = [UIColor blackColor]; NSDictionary*att = @{NSFontAttributeName: font, NSForegroundColorAttributeName:color}; [textToDraw drawWithRect:renderingRect options:NSStringDrawingUsesLineFragmentOrigin attributes:att context:nil]; } } + (UIImage *)imageWithImage:(UIImage *)image scaledToSize:(CGSize)newSize { //UIGraphicsBeginImageContext(newSize); UIGraphicsBeginImageContextWithOptions(newSize, NO, 0.0); [image drawInRect:CGRectMake(0, 0, newSize.width, newSize.height)]; UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); return newImage; } -(void)addImageWithRect:(UIImage *)image inRect:(CGRect)rect{ UIImage *newImage = [PDF imageWithImage:image scaledToSize:CGSizeMake(rect.size.width, rect.size.height)]; [imageArray addObject:newImage]; [imageRectArray addObject:[NSValue valueWithCGRect:rect]]; } -(void)addTextWithRect:(NSString *)text inRect:(CGRect)rect{ [textArray addObject:text]; [textRectArray addObject:[NSValue valueWithCGRect:rect]]; } -(void)addHeadertWithRect:(NSString *)text inRect:(CGRect)rect{ [header addObject:text]; [headerRect addObject:[NSValue valueWithCGRect:rect]]; } - (NSMutableData*) generatePdfWithFilePath: (NSString *)thefilePath { UIGraphicsBeginPDFContextToFile(thefilePath, CGRectZero, nil); BOOL done = NO; do { //Start a new page. UIGraphicsBeginPDFPageWithInfo(CGRectMake(0, 0, size.width, size.height), nil); //Draw Header [self drawHeader]; //Draw Text [self drawText]; //Draw an image [self drawImage]; done = YES; } while (!done); // Close the PDF context and write the contents out. UIGraphicsEndPDFContext(); //For data UIGraphicsBeginPDFContextToData(data, CGRectZero, nil); BOOL done1 = NO; do { //Start a new page. UIGraphicsBeginPDFPageWithInfo(CGRectMake(0, 0, size.width, size.height), nil); //Draw Header [self drawHeader]; //Draw Text [self drawText]; //Draw an image [self drawImage]; done1 = YES; } while (!done1); // Close the PDF context and write the contents out. UIGraphicsEndPDFContext(); return data; }

现在在类中导入PDf.h并使用类似的东西来创建并绘制你的pdf：

Now import the PDf.h in the class and use something like this to create and draw your pdf:

-(void)CreaPDFconPath:(NSString*)pdfFilePath{ UIFont*font = [UIFont fontWithName:@"HelveticaNeue-Light" size:22.0]; UIColor*color = [UIColor blackColor]; NSDictionary*att = @{NSFontAttributeName: font, NSForegroundColorAttributeName:color}; NSString* text = [NSString stringWithFormat:@"%@ \n\n%@", self.ingredienti.text, self.preparazione.text]; CGFloat stringSize = [text boundingRectWithSize:CGSizeMake(980, CGFLOAT_MAX)// use CGFLOAT_MAX to dinamically calculate the height of a string options:NSStringDrawingUsesLineFragmentOrigin attributes:att context:nil].size.height; //creo pdf e vi aggiungo testo e immagini PDF*pdfFile = [[PDF alloc]init]; [pdfFile initContent]; [pdfFile setSize:CGSizeMake(1000, 400+stringSize)]; [pdfFile addHeadertWithRect:self.fieldNome.text inRect:CGRectMake(10, 10, 980, 60)]; [pdfFile addImageWithRect:self.image.image inRect:CGRectMake(10, 80, 250, 250)]; NSString*stringInfo = [NSString stringWithFormat:@"%@:%@ \n\n%@",self.oreCottura.text,self.minutiDiCottura.text,self.numeroPersone.text]; [pdfFile addHeadertWithRect:stringInfo inRect:CGRectMake(300, 190, 500, 120)]; [pdfFile addTextWithRect:text inRect:CGRectMake(10, 350, 980, CGFLOAT_MAX)]; //disegno header immagine e testo [pdfFile drawHeader]; [pdfFile drawImage]; [pdfFile drawText]; //genero pdf [pdfFile generatePdfWithFilePath:pdfFilePath]; }