How do you change the textLabel when UITableViewCell is selected?

Question

I want to change the textLabel and detailTextLabel of a cell when it has been selected. I've tried the following, but no change occurs:

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
    MyAppDelegate *appDelegate = (MyPhoneAppDelegate*)[[UIApplication sharedApplication] delegate];

    UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
    cell.detailTextLabel.text = @"xxxxx";
    cell.textLabel.text =       @"zzzzz";
    [tableView reloadData];
}

score 10 · Answer 1 · answered Apr 20 '10 at 04:17

I agree, reloading the table view will actually dump and reload/display all the cells using tableView:cellForRowAtIndexPath: and use the original data, not the updated @"xxxxx" and @"yyyyy" in your tableView:didSelectRowAtIndexPath: method.

In a little test project I was able to change the labels upon selection with:

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {

    UITableViewCell * cell = [tableView cellForRowAtIndexPath:indexPath];
    cell.textLabel.text = @"it was tapped";
}

score 2 · Answer 2 · answered Jul 11 '12 at 10:27

2

Try to reload the cell you selected (described by indexPath) :

[yourTableView reloadRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationNone];

answered Jul 11 '12 at 10:27

Alexis

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score 2 · Answer 3 · answered Dec 12 '09 at 06:33

2

You should not be trying to reload the table while a cell is selected. Instead, try

[cell setNeedsLayout]

after you make the above changes to the labels.

Also, is there a reason you're making a reference to the app delegate in the method?

answered Dec 12 '09 at 06:33

Saurabh G

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score 0 · Answer 4 · 2014-11-21T23:04:27.597

0

Not sure what you're trying to do with the delegate but you should try calling the tableView already instantiated; i.e. call

UITableViewCell *cell = [self.tableView cellForRowAtIndexPath: indexPath];

Maybe I'm not clear What I'm saying is that you are instantiating a new empty table view

UITableViewCell *cell = [**tableView** cellForRowAtIndexPath: indexPath]; //cell has nothing it is new.

consider replacing to call the old

UITableViewCell *cell = [**self.tableView** cellForRowAtIndexPath: indexPath]; //now you have one that has a textField already in it

edited Nov 21 '14 at 23:04

answered Nov 19 '14 at 07:10

Do you see what I'm saying? You're creating a new instance not the old one. – Nov 21 '14 at 23:00
If you create a new one you must reload data to see it in the table view. If you use the old one the view will reflect the changes. – Nov 21 '14 at 23:05

score 0 · Answer 5 · edited Apr 04 '13 at 07:30

0

Create a New iPad Project (Split View) and Now go through the Classes->Files. The easiest way's been given there. The XCode's Generated Codes.

Sample Code Lines :-

cell.textLabel.text = [NSString stringWithFormat:@"Row %d", indexPath.row];

You can use them in cellForRowAtIndexPath ||&& didSelectRowAtIndexPath ..

edited Apr 04 '13 at 07:30

Hiren

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answered Feb 08 '11 at 06:17

Akshay

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score -1 · Answer 6 · answered Dec 10 '09 at 15:50

-1

Did you try to refresh only the selected cell instead of reloading the whole table ?

[cell setNeedsDisplay];

instead of

[tableView reloadData];

This will have better performance and I'm not but I suppose that selection is lost if you refresh the whole table (this may be the reason why you don't see any change in the end)....

answered Dec 10 '09 at 15:50

yonel

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What if you're using a custom cell view? – meridimus Jun 23 '10 at 20:31
a custom cell view is a view set to the contentView of a UITableViewCell, so that's the same, the setNeedsDisplay will redraw the contentView. – yonel Nov 12 '10 at 20:06

How do you change the textLabel when UITableViewCell is selected?

6 Answers6