How to grab a screenshot in sprite kit?

Question

When I am trying to grab a screen shot in spritekit. I've tried all the methods I can find online. They are not working.

UIGraphicsBeginImageContextWithOptions(self.view.bounds.size, self.view.opaque, 0.0);
    [self.view.layer renderInContext:UIGraphicsGetCurrentContext()];
    UIImage *gameOverScreenImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();

just not working

UIGraphicsBeginImageContextWithOptions(self.view.bounds.size, NO, scale);
[self drawViewHierarchyInRect:self.bounds afterScreenUpdates:YES];
UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();

cant recognize self.bounds and scale.

Answer 1

I’m not sure whether -drawViewHierarchyInRect:afterScreenUpdates: is supposed to work with SKView (I assume so), but the reason that second example doesn’t compile is that (1) you’re trying to call it and bounds on self (presumably a UIViewController) rather than self.view and (2) you haven’t defined the value of scale. Just change those two lines:

UIGraphicsBeginImageContextWithOptions(self.view.bounds.size, NO, [UIScreen mainScreen].scale);
[self.view drawViewHierarchyInRect:self.view.bounds afterScreenUpdates:YES];

Also, the second parameter to UIGraphicsBeginImageContextWithOptions—“opaque”—shouldn’t be NO unless your view is transparent, and setting “afterScreenUpdates” to YES is only necessary in some circumstances which probably don’t include this one. You may see better performance by changing those.