Creating PDF from UIView in iphone app gives exception - iphone

Question

I am creating pdf from iphone app using following code but when i call this method it gives exception.I have got this code from site.
here is the code
-(void)createPDFfromUIView:(UIView*)aView saveToDocumentsWithFileName:(NSString*)aFilename
{
// Creates a mutable data object for updating with binary data, like a byte array
NSMutableData *pdfData = [NSMutableData data];
// Points the pdf converter to the mutable data object and to the UIView to be converted
UIGraphicsBeginPDFContextToData(pdfData, aView.bounds, nil);
UIGraphicsBeginPDFPage();
CGContextRef pdfContext = UIGraphicsGetCurrentContext();
// draws rect to the view and thus this is captured by UIGraphicsBeginPDFContextToData
[aView.layer renderInContext:pdfContext];
// remove PDF rendering context
UIGraphicsEndPDFContext();
// Retrieves the document directories from the iOS device
NSArray* documentDirectories = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask,YES);
NSString* documentDirectory = [documentDirectories objectAtIndex:0];
NSString* documentDirectoryFilename = [documentDirectory stringByAppendingPathComponent:aFilename];
// instructs the mutable data object to write its context to a file on disk
[pdfData writeToFile:documentDirectoryFilename atomically:YES];
NSLog(#"documentDirectoryFileName: %#",documentDirectoryFilename);
}
I am calling this method here
[self createPDFfromUIView:self.view];
i think problem is in parameter passing while calling method.
thanks
here is the exception Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[MainViewController createPDFfromUIView:]: unrecognized selector sent to instance 0x613a950'

Answer 1

Your implementation says it all
-(void)createPDFfromUIView:(UIView*)aView saveToDocumentsWithFileName:(NSString*)aFilename
Expects 2 parameters ad you have specified only 1, so instead of
[self createPDFfromUIView:self.view];
Try
[self createPDFfromUIView:self.view saveToDocumentsWithFileName:#"Name of the file"]