How to combine/ merge 2 images into 1

Question

I would like to know what to do to save 2 images into 1 image.

One of the photos can be moved, rotated and zoomed in/out...

I'm doing this, but it basically captures all the stuff on the screen including my buttons...

UIGraphicsBeginImageContext(self.view.bounds.size); [self.view.layer renderInContext:UIGraphicsGetCurrentContext()]; UIImage *savedImg = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); 

Answer 1

You can create graphics context and draw both images in it. You'll get an image result from both your source images combined.

- (UIImage*)imageByCombiningImage:(UIImage*)firstImage withImage:(UIImage*)secondImage {     UIImage *image = nil;      CGSize newImageSize = CGSizeMake(MAX(firstImage.size.width, secondImage.size.width), MAX(firstImage.size.height, secondImage.size.height));     if (UIGraphicsBeginImageContextWithOptions != NULL) {         UIGraphicsBeginImageContextWithOptions(newImageSize, NO, [[UIScreen mainScreen] scale]);     } else {         UIGraphicsBeginImageContext(newImageSize);      }     [firstImage drawAtPoint:CGPointMake(roundf((newImageSize.width-firstImage.size.width)/2),                                          roundf((newImageSize.height-firstImage.size.height)/2))];      [secondImage drawAtPoint:CGPointMake(roundf((newImageSize.width-secondImage.size.width)/2),                                           roundf((newImageSize.height-secondImage.size.height)/2))];      image = UIGraphicsGetImageFromCurrentImageContext();     UIGraphicsEndImageContext();      return image; } 

Answer 2

Swift 4.2

let topImage = UIImage(named: "image1.png") let bottomImage = UIImage(named: "image2.png")  let size = CGSize(width: topImage!.size.width, height: topImage!.size.height + bottomImage!.size.height) UIGraphicsBeginImageContextWithOptions(size, false, 0.0)  topImage!.draw(in: CGRect(x: 0, y: 0, width: size.width, height: topImage!.size.height)) bottomImage!.draw(in: CGRect(x: 0, y: topImage!.size.height, width: size.width, height: bottomImage!.size.height))  let newImage:UIImage = UIGraphicsGetImageFromCurrentImageContext()! UIGraphicsEndImageContext()  //set finalImage to IBOulet UIImageView mergeImage.image = newImage 

Objective-C

UIImage *image1 = [UIImage imageNamed:@"image1.png"]; UIImage *image2 = [UIImage imageNamed:@"image2.png"];  CGSize size = CGSizeMake(image1.size.width, image1.size.height + image2.size.height);  UIGraphicsBeginImageContext(size);  [image1 drawInRect:CGRectMake(0,0,size.width, image1.size.height)]; [image2 drawInRect:CGRectMake(0,image1.size.height,size.width, image2.size.height)];  UIImage *finalImage = UIGraphicsGetImageFromCurrentImageContext();  UIGraphicsEndImageContext();  //set finalImage to IBOulet UIImageView imageView.image = finalImage;