IOS: Force tableView cell to animate change on tap - ios

Question

I am trying to perform an animation on a cell when the accessory view is tapped. The tapped delegate method is firing and I can get the row to do something--change label, but it is ignoring the animation (or in another case--not even making the change.) How can I get the animation to work properly?
- (void)tableView:(UITableView *)tableView accessoryButtonTappedForRowWithIndexPath:(NSIndexPath *)indexPath{
MyCustomCell *cell = [self.tableView cellForRowAtIndexPath:indexPath];
[UIView animateWithDuration:5.0
delay: 5.0
options: UIViewAnimationOptionCurveEaseIn
animations:^{
//NEXT TWO LINES HAVE NO EFFECT ON CELL SO COMMENTED OUT
//cell.nameLabel.text = #"Thank you. FIRST ANIMATE TRY";
// [self.tableView reloadRowsAtIndexPaths:#[indexPath] withRowAnimation:UITableViewRowAnimationFade];
//NEXT THREE LINES CHANGE TEXT BUT WITHOUT ANIMATION
[self.tableView beginUpdates];
cell.nameLabel.text = #"Thank you. Second try!";
[self.tableView endUpdates];
}
completion:^(BOOL finished){
NSLog(#"animation finished");
}];
}
BTW I also tried explicitly dispatching this in the main queue but it had no effect. It should already be in main queue.

Answer 1

First of all, you don't need to call beginUpdates or endUpdates. Second, you can't animate the change of a label's text value.
What you need to is have a label on the cell and initialize the alpha property to 0.0. When accessoryButtonTappedForRowWithIndexPath is called set the alpha property to 1.0 inside of your animation block.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
AwesomeCell *cell = [tableView dequeueReusableCellWithIdentifier:#"Cell" forIndexPath:indexPath];
cell.thankYouLabel.text = #"Thank you";
cell.thankYouLabel.alpha = 0.0;
return cell;
}
- (void)tableView:(UITableView *)tableView accessoryButtonTappedForRowWithIndexPath:(NSIndexPath *)indexPath
{
AwesomeCell *cell = [tableView cellForRowAtIndexPath:indexPath];
[UIView animateWithDuration:1.0 animations:^{
cell.thankYouLabel.alpha = 1.0;
}];
}