Printing on iOS - iphone

Question

Hi there can any one help me with this? I am new to iOS development. I am trying to implement a print feature, but I am getting errors in it. I see nothing but .xib file with some labels. The textview is there, I just want to print that view... when i pressed the print button the program is crashing..
Here is my code:
- (NSData *)generatePDFDataForPrinting {
NSMutableData *myPdfData = [NSMutableData data];
UIGraphicsBeginPDFContextToData(myPdfData, kPDFPageBounds, nil);
UIGraphicsBeginPDFPage();
CGContextRef ctx = UIGraphicsGetCurrentContext();
[self drawStuffInContext:ctx]; // Method also usable from drawRect:.
UIGraphicsEndPDFContext();
return myPdfData;
}
- (void)drawStuffInContext:(CGContextRef)ctx {
UIFont *font = [UIFont fontWithName:#"Zapfino" size:48];
CGRect textRect = CGRectInset(kPDFPageBounds, 36, 36);
[#"hello world!" drawInRect:textRect withFont:font];
}
- (IBAction)printFromIphone:(id)sender {
float systemVersion = [[[UIDevice currentDevice] systemVersion] floatValue];
if (systemVersion>4.1) {
NSData *myPdfData = [NSData dataWithContentsOfFile:myPdfData]; //check the value inside |myPdfData| and |pdfPath| is the path of your pdf.
UIPrintInteractionController *controller = [UIPrintInteractionController sharedPrintController];
if (controller && [UIPrintInteractionController canPrintData:myPdfData]){
//controller.delegate = delegate; //if necessary else nil
UIPrintInfo *printInfo = [UIPrintInfo printInfo];
printInfo.outputType = UIPrintInfoOutputGeneral;
printInfo.jobName = [myPdfData lastPathComponent];
//printInfo.duplex = UIPrintInfoDuplexLongEdge;
controller.printInfo = printInfo;
controller.showsPageRange = YES;
controller.printingItem = myPdfData;
// We need a completion handler block for printing.
UIPrintInteractionCompletionHandler completionHandler = ^(UIPrintInteractionController *printController, BOOL completed, NSError *error) {
if(completed && error){
NSLog(#"FAILED! due to error in domain %# with error code %u", error.domain, error.code);
}
};
// [controller presentFromRect:CGRectMake(200, 300, 100, 100) inView:senderView animated:YES completionHandler:completionHandler];
}else {
NSLog(#"Couldn't get shared UIPrintInteractionController!");
}
}
}

Answer 1

Not sure if its a typo or not but you've commented out your actual pdfData which is why its undeclared.
This line needs to be uncommented because you need myPdfData.
//NSData *myPdfData = [NSData dataWithContentsOfFile:pdfData]; //check the value inside |myPdfData| and |pdfPath| is the path of your pdf.
You can replace it with this line to use YOUR pdf instead of a file.
NSData *myPdfData = [self generatePDFDataForPrinting];