UIAlertview not visible about asscreenrecorder HOT 2 CLOSED

        if (self.delegate) {
            [self.delegate writeBackgroundFrameInContext:&bitmapContext];
        }
        // draw each window into the context (other windows include UIKeyboard, UIAlert)
        // FIX: UIKeyboard is currently only rendered correctly in portrait orientation
        dispatch_sync(dispatch_get_main_queue(), ^{
            UIGraphicsPushContext(bitmapContext); {
                for (UIWindow *window in [[UIApplication sharedApplication] windows]) {
                    [window drawViewHierarchyInRect:CGRectMake(0, 0, _viewSize.width, _viewSize.height) afterScreenUpdates:NO];
                }
            } UIGraphicsPopContext();
        });

        // draw each window into the context (other windows include UIKeyboard, UIAlert)
        // FIX: UIKeyboard is currently only rendered correctly in portrait orientation
        dispatch_sync(dispatch_get_main_queue(), ^{
            UIGraphicsPushContext(bitmapContext); {
                for (UIWindow *window in [[UIApplication sharedApplication] windows]) {
                    [window drawViewHierarchyInRect:CGRectMake(0, 0, _viewSize.width, _viewSize.height) afterScreenUpdates:NO];
                }
            } UIGraphicsPopContext();
        });
        if (self.delegate) {
            [self.delegate writeBackgroundFrameInContext:&bitmapContext];
        }

- (void)writeBackgroundFrameInContext:(CGContextRef*)contextRef {
  // create overlay CGRect
  CGRect overlayRect = …
  // set overlay color
  CGContextSetFillColor(contextRef, …
  // fill rect with overlay color in `contextRef`
  CGContextFillRect(contextRef, overlayRect)
}