Programmatically create a high resolution PDF file

There are so many ways to create PDF in IOS, but most of them which are easy create a low resolution PDF’s and one which creates high resolution PDF’s are very tough to handle for a guy like me. In this post, i am going to create PDF’s using drawInRect method. I know most of the guy’s give this idea a very poor programing to create PDF’s. But nevertheless, it solves my issue for the project on which i am working at that time. Let’s jump on to it

This method is very convenient if you have to create pdf’s from a view that contains label and images.
Below is the code that will create high resolution pdf’s.

CGRect pageFrame = CGRectMake(0, 0, 768, 1500);

UIGraphicsBeginPDFContextToData(pdfData, CGRectZero, nil);

UIGraphicsBeginPDFPageWithInfo(pageFrame, nil);

for (UILabel *lb in [scroll subviews])

{
if ([lb isKindOfClass:[UILabel class]])
{

NSMutableParagraphStyle *textStyle = [[NSMutableParagraphStyle defaultParagraphStyle] mutableCopy];

textStyle.lineBreakMode = lb.lineBreakMode;
textStyle.alignment = lb.textAlignment;

NSDictionary *dictionary = @{ NSFontAttributeName: lb.font, NSParagraphStyleAttributeName:textStyle};

if (![lb isHidden])
{
[lb.text drawInRect:lb.frame withAttributes:dictionary];
}

}

for (UIImageView *imgv in [scroll subviews])
{
if ([imgv isKindOfClass:[UIImageView class]])
{
if (imgv.tag == 100)
{
[imgv.image drawInRect:CGRectMake(imgv.frame.origin.x, imgv.frame.origin.y, imgv.frame.size.width, imgv.frame.size.height)];
}
}
}
}

UIGraphicsEndPDFContext();

NSString *fileName = @”Dummy.pdf”;

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);

NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *pdfFileName = [documentsDirectory stringByAppendingPathComponent:fileName];

[pdfData writeToFile:pdfFileName atomically:NO];

Pdf generated by using this code is viewable here