Change custom cell on tap

[gbergamo]

Hello everyone!
I Want to change my custom cell when the user tab on a cell in my table view.
I think i have to use the event didSelectRowAtIndexPath and change here, but i don´t know.. please help me!

tks!

[BrianSlick]

What kind of change? Be specific.

[gbergamo]

Originally Posted by BrianSlick

What kind of change? Be specific.

Sorry don´t be specific...
I want to change to another custom cell... I want to take off the current custom cell e change to other.

[BrianSlick]

Well, basically you will need to delete the current row, and insert a new row in the same place. You can trigger that from didSelectRow.

But, what's going to happen is the cellForRow will be called again, so that method will need to know to give you a different cell. So you are going to have to set a flag somewhere that defines which cell should be returned in that case.

[gbergamo]

Originally Posted by BrianSlick

Well, basically you will need to delete the current row, and insert a new row in the same place. You can trigger that from didSelectRow.

But, what's going to happen is the cellForRow will be called again, so that method will need to know to give you a different cell. So you are going to have to set a flag somewhere that defines which cell should be returned in that case.

Thanks for the answer Brian...
But I'm a begginer.. did you see the new twitter app? they have a customcell, when you slide the finger on a cell, another cell appear and you have some options. When you slide your finger on another cell, that fisrt cell changed returns and the options appear on the current cell.

This have to be hard to do, but I have to do...

Thanks a lot!

[BrianSlick]

The process I described is most likely what they are doing.

[gbergamo]

Originally Posted by BrianSlick

The process I described is most likely what they are doing.

Man, I found how can I delete the current row, but I don't find how can I insert the new custom Cell, I'll trying something like this:

[tableView deselectRowAtIndexPath:indexPath animated:UITableViewRowAnimationFade];
    
    [[vagasArray retain] autorelease];
    [vagasArray removeObjectAtIndex:indexPath.row];
    
    [tableView beginUpdates];
    
    [tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationFade];
    
    [tableView endUpdates];

I don't have any ideas how can i do this..

tks

[BrianSlick]

There is also an insertRowsAtIndexPaths.

Edit:

This part doesn't make any sense:

[[vagasArray retain] autorelease];
[vagasArray removeObjectAtIndex:indexPath.row];

There is no reason to retain/release the array.
And you don't want to remove anything from your array. You will still have the same number of objects.

[gbergamo]

Originally Posted by BrianSlick

There is also an insertRowsAtIndexPaths.

Edit:

This part doesn't make any sense:

[[vagasArray retain] autorelease];
[vagasArray removeObjectAtIndex:indexPath.row];

There is no reason to retain/release the array.
And you don't want to remove anything from your array. You will still have the same number of objects.

If I don't remove the item on array I have the follow error:
"Invalid update: invalid number of rows in section 0"

How can I use the insertRowsAtIndexPath? Because I try to use that, but I only reInsert the row.

Brian thanks a lot for the answers..

[BrianSlick]

You're doing 2 actions here. The cell that is sliding out is being deleted. The cell that is sliding in is being inserted. So you need to do both actions at the same time inside that update block.

And that's why the number of items in the array doesn't need to change.

[gbergamo]

Originally Posted by BrianSlick

You're doing 2 actions here. The cell that is sliding out is being deleted. The cell that is sliding in is being inserted. So you need to do both actions at the same time inside that update block.

And that's why the number of items in the array doesn't need to change.

Ok Brian... thanks a lot!

I don't know how insert a new CustomCell, you can post a code example for me? please.
I have a CustomCell that is my customcells on the tableView, and I have a CustomDetailCell that will have to appear after a tap or slide on the cell.

thanks again!

[BrianSlick]

No, I'm not going to post code. You will need to do some experimenting and figure this out.

Do this:

[tableView beginUpdates];
    
[tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationFade];
[tableView insertRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationFade];
    
[tableView endUpdates];

...and watch what happens. Add some logs to cellForRow to see when it gets called.

[gbergamo]

Originally Posted by BrianSlick

No, I'm not going to post code. You will need to do some experimenting and figure this out.

Do this:

[tableView beginUpdates];
    
[tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationFade];
[tableView insertRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationFade];
    
[tableView endUpdates];

...and watch what happens. Add some logs to cellForRow to see when it gets called.

I've tried to do this..
In this case, I delete a row and insert the sane row.

[BrianSlick]

Yes, that's the first step.

Now the second step is to make cellForRow give a different cell in this case. This will require some programming logic.