UIImageView scale from center using Animation Blocks

Question

I am using the following to scale image up but it\'s scaling from it\'s left top point, how can I make the scale from center

[UIView animateWithDuration:duration         


        

Answer 1

Try this:

[UIView animateWithDuration:2
   animations:^{
       float zoomScal = 5; //want 5x zoom
       CGPoint CenterPoint = CGPointMake(200, 300); // want center point to this
       imgArtifactImage.frame = CGRectMake(- CenterPoint.x * (zoomScal-1),- CenterPoint.y * (zoomScal-1),self.view.frame.size.width * zoomScal,self.view.frame.size.height * zoomScal);
} completion:^(BOOL finished){}];

It's working for me.