Question

I want to take screenshot programatically. So that i write code for it like,

CGContextRef context = [self createBitmapContextOfSize:self.frame.size];

//not sure why this is necessary...image renders upside-down and mirrored
CGAffineTransform flipVertical = CGAffineTransformMake(1, 0, 0, -1, 0, self.frame.size.height);
CGContextConcatCTM(context, flipVertical);

[self.layer renderInContext:context];

CGImageRef cgImage = CGBitmapContextCreateImage(context);
UIImage* background = [UIImage imageWithCGImage: cgImage];
CGImageRelease(cgImage);


self.currentScreen = background;

Here all code is in custom UIView of UIViewController. Now when i play UIImageView png sequence animation on UIView, then i didn’t get updated changes in UIImageView which is subview of custom UIView, why? I got only result is UIImageView with first UIImage.

Basically i need to create an video of my game play like talking tom application.

Answer 1

Take the screenshot of your ImageView with something like this:

[[[yourImageView layer] presentationLayer] renderInContext:context];

Use NSTimer for calling that getScreenshot function.

Hope this helps