Custom UITableViewCell and animation on setSelected: animated:

Question

I have a subclass UITableViewCellthat makes its drawing in the drawRect: method. The entire rectangle is custom made, including the background. I was able to get very complex cells while keeping scrolling very smoothly.

My problem: I call [table deselectRowAtIndexPath:path animated:YES];whenever a view appears to match Apple HIG. However, the animation does not occur. This worked when I had a custom view (created using subviews) that was transparent (e.g. Apple background appeared below). Now this is not so.

My drawRect: called once during the "animation", about halfway. I think this is because it enlivens the selected property of the cell from 1 to 0, and it binds to 0 when it drops below 0.5.

How can I revive this transition? My guess would be to use the usual beginAnimations: etc. And animate a custom floating point field in my cell object from 1 to 0. Will this call drawRect:re-animate?

Update I managed to work almost completely. I redefined setSelected: animated: like this:

- (void) setSelected:(BOOL)selected animated:(BOOL)animated {
    [super setSelected:selected animated:NO];

    if (animated) {
        [CATransaction begin];
        CATransition* animation = [CATransition animation];
        animation.type = kCATransitionFade;
        animation.duration = 0.6;
        [animation setTimingFunction:[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut]];
        [view.layer addAnimation:animation forKey:@"deselectRow"];
        [CATransaction commit];
    }
}

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Answer 1

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- (void)setSelected:(BOOL)selected animated:(BOOL)animated {
    UIView *view = [[UIView alloc] initWithFrame:self.frame];
    view.backgroundColor = [UIColor colorWithRed:.9 green:.0 blue:.125 alpha:1.0];

    self.selectedBackgroundView = view;

    [super setSelected:selected animated:animated];
}