iPhone: Adding UIImage to UIImageView adds a second image

I have a UIImageView that I have already set an image to. This works fine, but later, I want to change that image. So, I set a new image for the image property, but when I view the app, that image is set as a second image over the first:开发者_开发技巧

UIImageView *image;
image = (UIImageView *)[cell viewWithTag:0];
image.image = [UIImage imageNamed:@"History_Row2.png"];

How can I replace the current image in my UIImageView rather than seeming to add another?!

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I did it by retaining the UIImageView, and keeping a reference as an ivar, releasing on dealloc.

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image = (UIImageView *)[cell viewWithTag:0];

That was returning a UITableViewCell rather than a UIImageView, this is because the tag 0 is the default and it needs to be changed to a different number. After doing this it worked.