How to merge two images after rotate the image?

Question

After rotate the image how to merge the rotation image? I using the below code, It

Answer 1

If you want while device orientation use this code

- (void)willAnimateRotationToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration
{
if (toInterfaceOrientation == UIInterfaceOrientationLandscapeLeft ||
    toInterfaceOrientation == UIInterfaceOrientationLandscapeRight)
{
    //Your cgrectmake for landscape
}
else
{
    //Your cgrectmake for Portrait
}
}

Answer 2

Add this method call this after rotation:

-(UIImage *)getMergedImage
{
 UIImage mergedImage;
 UIGraphicsBeginImageContext(backgroundImageView.frame.size)
 [backgroundImageView.layer  renderInContext:UIGraphicsGetCurrentContext];//bacgroundImageView here
 UIImage overLappedImage = [self getOverlappedImage];
 if(overLappedImage)
 {
   //CGRectMake(0,0,rsImageView.frame.width,rsImageView.frame.height)
   [overLappedImage drawInRect:rsImageView.frame blendMode:kCGBlendModeNormal alpha:0.8];//TopMostImageView here
 }
 mergedImage = UIGraphicsGetImageFromCurrentImageContext(); 
 UIGraphicsEndImageContext();
 return mergedImage;
}

---

Add this method to get overlappped Image.

-(UIImage *)getOverlappedImage
{
  UIImage overlappedImage;
  UIGraphicsBeginImageContext(rsImageView.frame.size)
  [rsImageView.layer renderInContext:UIGraphicsGetCurrentContext]; //TopMostImageView here
  overlappedImage = UIGraphicsGetImageFromCurrentImageContext(); 
  UIGraphicsEndImageContext();
  return overlappedImage;
}