Programatic Screenshot with Camera View

I am using the below code to take a screenshot of the screen, but it replaces the camera view with all black (though all other UI elements are fine-- I need the Camera View as well as UI elements).

All answers to similar questions that I've found are either extremely old/deprecated, or in Swift. If anyone has a simple, Obj-C solution to this problem, it would be much appreciated.

Thanks!

if ([[UIScreen mainScreen] respondsToSelector:@selector(scale)]) {
    UIGraphicsBeginImageContextWithOptions(self.view.window.bounds.size, NO, [UIScreen mainScreen].scale);
} else {
    UIGraphicsBeginImageContext(self.view.window.bounds.size);
}

[self.view.window.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
NSData *imageData = UIImagePNGRepresentation(image);
if (imageData) {
    [imageData writeToFile:@"Screenshot.png" atomically:YES];
    NSLog(@"Screenshot write successful");
} else {
    NSLog(@"Error while taking screenshot");
}

from Programatic Screenshot with Camera View