UITableViewCell edit cell content on click - ios

Question

I have a question about UITAbleViewCell's.
I have implemented UITableViewDelegate method
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = [self tableView:tableView cellForRowAtIndexPath:indexPath];
cell.backgroundColor = [UIColor redColor];
cell.textLabel.textColor = [UIColor redColor];
cell.textLabel.text = #"Title";
}
After I click on desired cell, nothing happens...
Why it doesn't work as I expected? Also, what should I do to make it work?

Answer 1

You have to create some base model for cell states e.g:
#property NSString *modelState = #"red"; // this is fast hint, but it can be a enum with states.
all cell will have one title after tap.
... other controller code...
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell = [self.restaurantTable dequeueReusableCellWithIdentifier:#"cell_ID"];
// cell customization method
[self customizeCell:cell accordingToStateStr:modelState];
return cell;
}
... other controller code...
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
[tableView deselectRowAtIndexPath:indexPath animated:NO];
// Set other state for cell
self.modelState = #"red";
[tableView reloadData];
}
- (void)customizeCell:(UITableViewCell*)cell accordingToStateStr:(NSString *)str {
if ([str isEqualToString:#"red"]) {
cell.backgroundColor = [UIColor redColor];
cell.textLabel.textColor = [UIColor redColor];
cell.textLabel.text = #"Title";
} else if(...) {
//Other options..
}
}
[tableView reloadData]; - will trigger once again "cellForRow" method and your table will be redrawn according to new model.
You can use for cell states emuns instead NSString object (this is only scaffold for you).

Answer 2

Try this:
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
// config the selected cell
....
}
You should ask the UITableView for the cell directly rather than ask its delegate (self in your code). Cause its delegate may dequeue or create a fresh cell rather than giving you the cell seleceted.