Screenshot entire storyboard even if simulator does not physically see entire board?

Question

So the storyboard height I have chosen to use to set up my screen is 667 (iPhone 6 height). However, if I were to use a 4s simulator, I am only able to see 480 of that 667 (to view the extra 187 pixels, I have a scrollview set up). With that in mind, would I able to create code to screenshot the entire 667 pixel storyboard, even though I may use a 4s simulator which has a max height of 480 and will never be able to view the whole 667 pixel height?

Answer 1

To accomplish this screenshot, I took a screenshot of my entire tableview, turned it into a PDF so I could print it. Hope this helps you out.

First in my .h file I used the UIPrintInteractionControllerDelegate so I could eventually print my screenshot.

Then in my .m file after the interface I declared a variable to store the pdf data.

@property (nonatomic, strong) NSMutableData *pdfData;

Also in my .m file I created a button that would print and hooked it up in IB to the method printThis.

- (IBAction)printThis:(id)sender
{
[self createPDF];  //Will show you this in a second

UIPrintInteractionController *pic = [UIPrintInteractionController sharedPrintController];
pic.delegate = self;
UIPrintInfo *printInfo = [UIPrintInfo printInfo];
printInfo.outputType = UIPrintInfoOutputGeneral;
printInfo.jobName = [NSString stringWithFormat:@"ELEMENTS"];
printInfo.duplex = UIPrintInfoDuplexLongEdge;
pic.printInfo = printInfo;
pic.showsPageRange = YES;
pic.printingItem = _pdfData;

void (^completionHandler)(UIPrintInteractionController *, BOOL, NSError *) = ^(UIPrintInteractionController *printController, BOOL completed, NSError *error)
{
    if (!completed && error)
    {
        NSLog(@"Printing could not complete because of error: %@", error);
    }
};

// This is for iPad
[pic presentFromBarButtonItem:self.printButton animated:YES completionHandler:completionHandler];

// This is for iPhone/iPod
[pic presentAnimated:YES completionHandler:completionHandler];

//You can use an if statement to pick which device you are on, I only used the phone for this app
}

Getting back to the createPDF method. This is what will help you the most.

- (void)createPDF
{
_pdfData = [NSMutableData data];

UITableView *tempView = [[UITableView alloc] init]; //I printed a tableview, you can print your scroll view
tempView = _elementTableView; //Put your scroll view in the temp view 
_headerView.hidden = YES;  //I didn't want to print my header but you won't have one

CGRect priorBounds = tempView.bounds; //getting bounds of your scrollview 
CGSize fittedSize = [tempView sizeThatFits:CGSizeMake(priorBounds.size.width, HUGE_VALF)];
tempView.bounds = CGRectMake(0, 0, fittedSize.width, fittedSize.height);

CGRect pdfPageBounds = CGRectMake(0, 10, 612, 792);  //This is the size of a page of paper so I could print to regular paper

UIGraphicsBeginPDFContextToData(_pdfData, pdfPageBounds, nil);
{
    for (CGFloat pageOriginY = 0; pageOriginY < fittedSize.height; pageOriginY += pdfPageBounds.size.height)  //This lets me print multiple pages if it goes over
    {
        UIGraphicsBeginPDFPageWithInfo(pdfPageBounds, nil);
        CGContextSaveGState(UIGraphicsGetCurrentContext());
        {
            CGContextTranslateCTM(UIGraphicsGetCurrentContext(), 0, -pageOriginY);
            [tempView.layer renderInContext:UIGraphicsGetCurrentContext()];
        }CGContextRestoreGState(UIGraphicsGetCurrentContext());
    }
}UIGraphicsEndPDFContext();
tempView.bounds = priorBounds;
}

So now I have a button that will screen shot the whole table view, in your case your scrollview, turn it into a pdf and print if the device is capable of air printing. To check that I used in the viewDidLoad method....

if ([UIPrintInteractionController isPrintingAvailable])
{
    _printButton.enabled = YES;
    _printButton.width = 44.0f;
}
else
{
    _printButton.enabled = NO;
    _printButton.width = 0.0f;
}

This just turns the button off if you can't print. I hope this helps you out. Let me know if you have any questions.