Expand UITableViewCell with animation - objective-c

Question

I'm trying to implement functionality in my UITableView where a UITableViewCell's UIImageView expands to fill up the complete view after a user touches the cell.
This is the animation I'm using:
UITableViewCell *cell = [_tableView cellForRowAtIndexPath:indexPath];
UIImageView *imageView = [cell viewWithTag:1];
UIView *cellView = [cell viewWithTag:2];
CGRect rectInTableView = [_tableView rectForRowAtIndexPath:indexPath];
[UIView animateWithDuration:0.5
delay:0
options:UIViewAnimationOptionCurveEaseIn
animations:^(void)
{
imageView.frame = rectInTableView;
imageView.tag = 123;
[self.navigationController.view addSubview:imageView];
[imageView setFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height+64)];
imageView.contentMode = UIViewContentModeScaleAspectFill;
}
completion:^(BOOL finished)
{}];
What happens now, though, is that a UIImageView jumps to the top and then expands. I want it to expand from the cell though. How can I do this?

Answer 1

This might accomplish what you're trying to do:
UITableViewCell *cell = [_tableView cellForRowAtIndexPath:indexPath];
UIImageView *imageView = [cell viewWithTag:1];
UIView *cellView = [cell viewWithTag:2];
CGRect rectInTableView = [_tableView rectForRowAtIndexPath:indexPath];
imageView.frame = rectInTableView;
imageView.tag = 123;
[self.navigationController.view addSubview:imageView];
[UIView animateWithDuration:0.5
delay:0
options:UIViewAnimationOptionCurveEaseIn
animations:^(void)
{
[imageView setFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height+64)];
imageView.contentMode = UIViewContentModeScaleAspectFill;
}
completion:^(BOOL finished)
{}];