#import <objc/runtime.h> // for objc_setAssociatedObject / objc_getAssociatedObject
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell* cell = [tableView cellForItemAtIndexPath:indexPath];
UIImageView* iv = cell.contentView.subviews.lastObject;
UIImageView* ivExpand = [[UIImageView alloc] initWithImage: iv.image];
ivExpand.contentMode = iv.contentMode;
ivExpand.frame = [self.view convertRect: iv.frame fromView: iv.superview];
ivExpand.userInteractionEnabled = YES;
ivExpand.clipsToBounds = YES;
objc_setAssociatedObject( ivExpand,
"original_frame",
[NSValue valueWithCGRect: ivExpand.frame],
OBJC_ASSOCIATION_RETAIN);
[UIView transitionWithView: self.view
duration: 1.0
options: UIViewAnimationOptionAllowAnimatedContent
animations:^{
[self.view addSubview: ivExpand];
ivExpand.frame = self.view.bounds;
} completion:^(BOOL finished) {
UITapGestureRecognizer* tgr = [[UITapGestureRecognizer alloc] initWithTarget: self action: @selector( onTap: )];
[ivExpand addGestureRecognizer: tgr];
}];
}
- (void) onTap: (UITapGestureRecognizer*) tgr
{
[UIView animateWithDuration: 1.0
animations:^{
tgr.view.frame = [objc_getAssociatedObject( tgr.view,
"original_frame" ) CGRectValue];
} completion:^(BOOL finished) {
[tgr.view removeFromSuperview];
}];
}
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