Create multi page PDF in objective-c - iphone

Question

I am trying to create a multipage PDF. I have followed this tutorial.
This is working with a XIB file for static text and then adds a table from code. But the problem I'm having ATM is that when the table is bigger then one page. When the table has more then 9 rows. It should continue on the next page.
This is what I'm doing in code.
+(void)drawPDF:(NSString*)fileName
{
NSMutableDictionary *mutDictValues = [[[NSUserDefaults standardUserDefaults] objectForKey:#"dicValues"] mutableCopy];
NSMutableArray *arrSelectedCities = [[mutDictValues objectForKey:#"cities"]mutableCopy ];
if(arrSelectedCities.count <= 8){
// If there are only 8 rows --> we can fit everyting on one page !
// Create the PDF context using the default page size of 612 x 792.
UIGraphicsBeginPDFContextToFile(fileName, CGRectZero, nil);
// Mark the beginning of a new page.
UIGraphicsBeginPDFPageWithInfo(CGRectMake(0, 0, 612, 792), nil);
[self drawLabels];
[self drawLogo];
int xOrigin = 50;
int yOrigin = 350;
int rowHeight = 50;
int columnWidth = 240;
int numberOfRows = 9;
int numberOfColumns = 2;
[self drawTableAt:CGPointMake(xOrigin, yOrigin) withRowHeight:rowHeight andColumnWidth:columnWidth andRowCount:numberOfRows andColumnCount:numberOfColumns];
[self drawTableDataAt:CGPointMake(xOrigin, yOrigin) withRowHeight:rowHeight andColumnWidth:columnWidth andRowCount:numberOfRows andColumnCount:numberOfColumns withArray:arrSelectedCities];
// Close the PDF context and write the contents out.
UIGraphicsEndPDFContext();
}else{
// When we have more then 8 rows we should have 2 pages.
NSLog(#"Create 2 pages");
// Create the PDF context using the default page size of 612 x 792.
UIGraphicsBeginPDFContextToFile(fileName, CGRectZero, nil);
// Mark the beginning of a new page.
UIGraphicsBeginPDFPageWithInfo(CGRectMake(0, 0, 612, 792), nil);
[self drawLabels];
[self drawLogo];
int xOrigin = 50;
int yOrigin = 350;
int rowHeight = 50;
int columnWidth = 240;
int numberOfRows = 9;
int numberOfColumns = 2;
[self drawTableAt:CGPointMake(xOrigin, yOrigin) withRowHeight:rowHeight andColumnWidth:columnWidth andRowCount:numberOfRows andColumnCount:numberOfColumns];
[self drawTableDataAt:CGPointMake(xOrigin, yOrigin) withRowHeight:rowHeight andColumnWidth:columnWidth andRowCount:numberOfRows andColumnCount:numberOfColumns withArray:arrSelectedCities];
// Create the PDF context using the default page size of 612 x 792.
UIGraphicsBeginPDFContextToFile(fileName, CGRectZero, nil);
// Mark the beginning of a new page.
UIGraphicsBeginPDFPageWithInfo(CGRectMake(0, 0, 612, 792), nil);
int xOrigin2 = 50;
int yOrigin2 = 60;
int numberOfRows2 = ((arrSelectedCities.count+1)-9);
[self drawTableAt:CGPointMake(xOrigin2, yOrigin2) withRowHeight:rowHeight andColumnWidth:columnWidth andRowCount:numberOfRows2 andColumnCount:numberOfColumns];
[self drawTableDataAt:CGPointMake(xOrigin2, yOrigin2) withRowHeight:rowHeight andColumnWidth:columnWidth andRowCount:numberOfRows2 andColumnCount:numberOfColumns withArray:arrSelectedCities];
}
// Close the PDF context and write the contents out.
UIGraphicsEndPDFContext();
}
Let me explain what I'm doing here. I have an array that should fill up my tableview. If the array is bigger then 8 then I should use 2 pages. Else everything works with one page.
What this does is, it's creating only the second page....
Can anybody help me?

Answer 1

You should not call UIGraphicsBeginPDFContextToFile() again when creating the second page,
only UIGraphicsBeginPDFPageWithInfo():
UIGraphicsBeginPDFContextToFile(...);
UIGraphicsBeginPDFPageWithInfo(...); // start first page
// ...
UIGraphicsBeginPDFPageWithInfo(...); // start second page
// ...
UIGraphicsEndPDFContext();

Answer 2

NSArray *imageArray = [NSArray arrayWithObjects:[UIImage imageNamed:#"3.png"], [UIImage imageNamed:#"4.png"], [UIImage imageNamed:#"5.png"], [UIImage imageNamed:#"3.png"], nil];
NSMutableData *pdfFile = [[NSMutableData alloc] init];
double pageWidth = 0.0;
double pageHeight = 0.0;
UIImage *image;
for (int i = 0; i < [imageArray count]; i++)
{
image =[UIImage imageWithCGImage:[imageArray[i] CGImage]];
pageWidth = pageWidth + image.size.width ;
pageHeight = pageHeight + image.size.height;
}
image =[UIImage imageWithCGImage:[imageArray[0] CGImage]];
CGRect rect;
rect = CGRectMake(0, 0,image.size.width ,image.size.height);
UIGraphicsBeginPDFContextToData(pdfFile, CGRectZero, nil);
for (int i = 0; i < [imageArray count] ; i++)
{
UIGraphicsBeginPDFPageWithInfo(rect, nil);
UIImage *contextImage = imageArray[i];
[contextImage drawInRect:rect];
}
UIGraphicsEndPDFContext();
// save PDF file
NSString *saveFileName = [NSString stringWithFormat:#"%#%fx%f.pdf", #"test", pageWidth, pageHeight];
NSArray* documentDirectories = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask,YES);
NSString* documentDirectory = [documentDirectories objectAtIndex:0];
NSString* savePath = [documentDirectory stringByAppendingPathComponent:saveFileName];
if([[NSFileManager defaultManager] fileExistsAtPath:savePath])
{
[[NSFileManager defaultManager] removeItemAtPath:savePath error:nil];
}
[pdfFile writeToFile: savePath atomically: YES];
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:nil message:#"PDF File created and saved successfully." delegate:nil cancelButtonTitle:#"OK" otherButtonTitles:nil, nil];
[alert show];

Answer 3

You don't need to create context for second page (UIGraphicsBeginPDFContextToFile(fileName, CGRectZero, nil)), you have to only create this page.
You should also remember about closing opened page using CGPDFContextEndPage().

Answer 4

- (void)viewDidLoad {
[super viewDidLoad];
[self createPDF];
}
- (void)createPDF {
[self setupPDFDocumentNamed:#"myPdf" Width:850 Height:1100];
[self beginPDFPage];
}
- (void)beginPDFPage {
UIGraphicsBeginPDFPageWithInfo(CGRectMake(0, 0, pageSize.width, pageSize.height), nil);
// kPadding will make 20 points margin on both sides of pdf
CGRect textRect = [self addText:#"Line Text Testing" withFrame:CGRectMake(PdfPadding, PdfPadding, 400, 200) fontSize:48.0f];
textRect = [self addLineWithFrame:CGRectMake(PdfPadding, textRect.origin.y + textRect.size.height +PdfPadding, pageSize.width - PdfPadding*2, 4) withColor:[UIColor blueColor]];
UIImage *anImage = [UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:#"https://www.phantompeer.com/sitefiles/osx.png"]]];
textRect = [self addImage:anImage atPoint:CGPointMake((pageSize.width/2)-(anImage.size.width/2),textRect.origin.y + textRect.size.height + PdfPadding)];
textRect = [self addLineWithFrame:CGRectMake(PdfPadding, textRect.origin.y + textRect.size.height + PdfPadding, pageSize.width - PdfPadding*2, 4) withColor:[UIColor redColor]];
textRect = [self addText:#"Line Text Testing" withFrame:CGRectMake(PdfPadding, textRect.origin.y + textRect.size.height + PdfPadding, 400, 200) fontSize:48.0f];
textRect = [self addLineWithFrame:CGRectMake(PdfPadding, textRect.origin.y + textRect.size.height +PdfPadding, pageSize.width - PdfPadding*2, 4) withColor:[UIColor blueColor]];
anImage = [UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:#"https://www.w3schools.com/css/img_fjords.jpg"]]];
textRect = [self addImage:anImage atPoint:CGPointMake((pageSize.width/2)-(anImage.size.width/2),textRect.origin.y + textRect.size.height + PdfPadding)];
textRect = [self addLineWithFrame:CGRectMake(PdfPadding, textRect.origin.y + textRect.size.height + PdfPadding, pageSize.width - PdfPadding*2, 4) withColor:[UIColor redColor]];
UIGraphicsEndPDFContext();
[self loadRemotePdf];
}
-(CGRect)addText:(NSString*)text withFrame:(CGRect)frame fontSize:(float)fontSize {
UIFont *font = [UIFont systemFontOfSize:fontSize];
CGSize stringSize = [text sizeWithFont:font constrainedToSize:CGSizeMake(pageSize.width - 2*20-2*20, pageSize.height - 2*20 - 2*20) lineBreakMode:UILineBreakModeWordWrap];
if((frame.origin.y + stringSize.height + PdfPadding) > pageSize.height) {
frame = CGRectMake(frame.origin.x, PdfPadding, frame.size.width, frame.size.height);
UIGraphicsBeginPDFPageWithInfo(CGRectMake(0, 0, pageSize.width, pageSize.height), nil);
}
float textWidth = frame.size.width;
if (textWidth < stringSize.width)
textWidth = stringSize.width;
if (textWidth > pageSize.width)
textWidth = pageSize.width - frame.origin.x;
CGRect renderingRect = CGRectMake(frame.origin.x, frame.origin.y, textWidth, stringSize.height);
[text drawInRect:renderingRect withFont:font lineBreakMode:NSLineBreakByWordWrapping alignment:NSTextAlignmentLeft];
frame = CGRectMake(frame.origin.x, frame.origin.y, textWidth, stringSize.height);
return frame;
}
-(CGRect)addLineWithFrame:(CGRect)frame withColor:(UIColor*)color {
if((frame.origin.y + frame.size.height+PdfPadding) > pageSize.height) {
frame = CGRectMake(frame.origin.x, PdfPadding, frame.size.width, frame.size.height);
UIGraphicsBeginPDFPageWithInfo(CGRectMake(0, 0, pageSize.width, pageSize.height), nil);
}
CGContextRef currentContext = UIGraphicsGetCurrentContext();
CGContextSetStrokeColorWithColor(currentContext, color.CGColor);
// this is the thickness of the line
CGContextSetLineWidth(currentContext, frame.size.height);
CGPoint startPoint = frame.origin;
CGPoint endPoint = CGPointMake(frame.origin.x + frame.size.width, frame.origin.y);
CGContextBeginPath(currentContext);
CGContextMoveToPoint(currentContext, startPoint.x, startPoint.y);
CGContextAddLineToPoint(currentContext, endPoint.x, endPoint.y);
CGContextClosePath(currentContext);
CGContextDrawPath(currentContext, kCGPathFillStroke);
return frame;
}
-(CGRect)addImage:(UIImage*)image atPoint:(CGPoint)point {
CGRect imageFrame = CGRectMake(point.x, point.y, image.size.width, image.size.height);
if((imageFrame.origin.y + imageFrame.size.height + PdfPadding) > pageSize.height) {
imageFrame = CGRectMake(imageFrame.origin.x, PdfPadding, imageFrame.size.width, imageFrame.size.height);
UIGraphicsBeginPDFPageWithInfo(CGRectMake(0, 0, pageSize.width, pageSize.height), nil);
}
[image drawInRect:imageFrame];
return imageFrame;
}
- (void) loadRemotePdf
{
CGRect rect = [[UIScreen mainScreen] bounds];
CGSize screenSize = rect.size;
NSString *newPDFName = [NSString stringWithFormat:#"myPdf.pdf"];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSLibraryDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *pdfPath = [documentsDirectory stringByAppendingPathComponent:newPDFName];
UIWebView *myWebView = [[UIWebView alloc] initWithFrame:CGRectMake(0,0,screenSize.width,screenSize.height)];
myWebView.autoresizesSubviews = YES;
myWebView.autoresizingMask=(UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleWidth);
NSURL *myUrl = [NSURL fileURLWithPath:pdfPath];
NSURLRequest *myRequest = [NSURLRequest requestWithURL:myUrl];
[myWebView loadRequest:myRequest];
[self.view addSubview: myWebView];
}
For creating new page in the pdf, use
UIGraphicsBeginPDFPageWithInfo(CGRectMake(0, 0, pageSize.width, pageSize.height), nil);