创建PDF iOS7 [英] Create 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+:
http://mobile.tutsplus.com/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];
}
这篇关于创建PDF iOS7的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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