UIImageview won't update after changing the center

Question

I am trying to create a small augmented reality application where I move an image on top of the camera capture. So the only thing I change is the center of the UIImageview:

[imageView1 setCenter:CGPointMake(x-16, 240)];  

and the center gets updated but the position of the image on the screen stays the same.

after the center update, this gets called:

[self.imageView1 performSelectorOnMainThread:@selector(setImage:) withObject:testImage waitUntilDone:YES];

The funny thing is that in the first iteration it actually updates the position. But only the first time. Any ideas?

Answer 1

Try:

imageView1.center = CGPointMake(imageView1.center.x-16, 240);