Merge Two Image on to one Image programmatically in iphone

Question

Hello I am developing the application which requires to merge two Image , My image size are 320*240 by merging both Image I want the size to be 320 * 480 . How can i do this

Answer 1

//ADDED Swift 3.2 and 4.0

@IBOutlet weak var imgCamera1: UIImageView!
@IBOutlet weak var imgCamera2: UIImageView!

    let image1 = imgCamera1.image
    let image2 = imgCamera2.image

    let size = CGSize(width: image1?.size.width ?? 0.0, height: (image1?.size.height)! + (image2?.size.height)!)
    UIGraphicsBeginImageContext(size)
    image1?.draw(in: CGRect(x: 0, y: 0, width: size.width, height: image1?.size.height ?? 0.0))
    image2?.draw(in: CGRect(x: 0, y: image1?.size.height ?? 0.0, width: size.width, height: image2?.size.height ?? 0.0))

    let finalImage = UIGraphicsGetImageFromCurrentImageContext();

    UIGraphicsEndImageContext();


    //Add image to view
    let imageView = UIImageView(frame: CGRect(x: 0, y: 0, width: finalImage?.size.width ?? 0.0, height: finalImage?.size.height ?? 0.0))
    imageView.image = finalImage

    //Displaying Image
   // view.addSubview(imageView)

Answer 2

you can use two different image-views one below other.and assign two different images.

Answer 3

Swift Version

func getMixedImg(image1: UIImage, image2: UIImage) -> UIImage {

    var 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))
    var finalImage = UIGraphicsGetImageFromCurrentImageContext()
    UIGraphicsEndImageContext()

    return finalImage
}

You will get your image to call this function like this :

var myimage1 = UIImage(named: "image1.png")
var myimage2 = UIImage(named: "image2.png")

var finalMixedImage = getMixedImg(myimage1!, image2: myimage2!)

Answer 4

 UIImage *Image1 = [[UIImage alloc] initWithData:data]; 
 UIImage *Image2 = [[UIImage alloc] initWithData:data]; 
 // Set up width height with values.
        CGSize newSize = CGSizeMake(width, height);
        UIGraphicsBeginImageContext( newSize );

        [Image1 drawInRect:CGRectMake(0,0,newSize.width,newSize.height)];

        [Image2 drawInRect:CGRectMake(newSize.width,newSize.height,newSize.width,newSize.height*2) blendMode:kCGBlendModeNormal alpha:1.0];

        UIImage *mergedImage = UIGraphicsGetImageFromCurrentImageContext();

        UIGraphicsEndImageContext();