Create a UIImage from two other UIImages on the iPhone

Question

I\'m trying to write an animation on the iPhone, without much success, getting crashes and nothing seems to work.

What I wanna do appears simple, create a UIImage, a

Answer 1

Here is an example to merge two images that are the same size into one. I don't know if this is the best and don't know if this kind of code is posted somewhere else. Here is my two cents.

+ (UIImage *)mergeBackImage:(UIImage *)backImage withFrontImage:(UIImage *)frontImage
{

    UIImage *newImage;

    CGRect rect = CGRectMake(0, 0, backImage.size.width, backImage.size.height);

    // Begin context
    UIGraphicsBeginImageContextWithOptions(rect.size, NO, 0);

    // draw images
    [backImage drawInRect:rect];
    [frontImage drawInRect:rect];

    // grab context
    newImage = UIGraphicsGetImageFromCurrentImageContext();

    // end context
    UIGraphicsEndImageContext();

    return newImage;
}

Hope this helps.