gistfile1.m

- (void)createPDFFromContents {
    NSString *pdfPath = [NSURL pathToDocuments:@"CostCalculator.pdf"];
    BOOL success = UIGraphicsBeginPDFContextToFile(pdfPath, self.bounds, nil);
    if (!success) return;
    
    CGContextRef pdfContext = UIGraphicsGetCurrentContext();
    
    UIGraphicsBeginPDFPage();
    
    [self.layer renderInContext:pdfContext];
    
    UIGraphicsEndPDFContext();
}