How to show and edit existing PDF files in ios application

Question

I do not want to create new PDF file,that I had already done but want to show and edit existing pdf file in iOS through code..

Is this possible or not and if possibl

Answer 1

I know its too late for this question, however I'd like to add my solution.

I am using UIGraphicsBeginPDFContextToFile to generate a PDF file. I've created a class called PDFCreator from base class UIViewController, in that I have two functions like this:

- (void) beginContextWithFile:(NSString *)filename
{
    pageSize = CGSizeMake(1024, 1424);

    UIGraphicsBeginPDFContextToFile(filename, CGRectZero, nil);

    UIGraphicsBeginPDFPageWithInfo(CGRectMake(0, 0, pageSize.width, pageSize.height), nil);

    [self createInitialPart];
}

- (void) endContext
{
    UIGraphicsEndPDFContext();
}

I've created an object of this class in the app delegate file, as it will retain the object until the app terminates (as was my requirement).

Initially, I am calling beginContextWithFile: and it will create a pdf file in the document directory along with data I am adding through a call to the createInitialPart method.

At some point later I need to update that file, so I have another method named secondPart though I called it for some more data to append to that file.

Once I fill I've done with the creation, I need to call endContext of PDFCreator class, that will complete the pdf generation and yes, I will have the updated file.

This is little tricky and I didn't perform any memory checks though I had the requirement, I found the solution :)