Delete the Cell from UITableView

iAS · August 2011

The UITableView is Populated using the NSMutuableArray.

I had displayed values from NSArray into the UITableViewCell,

What i need is delete the individual cell from TableView, for this i need to delete particular element from nsArray using [ removeObjectAtIndex: indexPath.row];
and then reload the tableview.

What else i am suppose to do, Do i need to write any tableView Delegate Methods.

Bopols · August 2011

you just need to delete the object from the array and then call [tableview reloadData]

oh btw, you should use NSMutableArray

rappa819 · August 2011

Is your array stored somewhere like in a plist? Because if your declaring it on viewDidLoad with all its objects and remove one during runtime, the next time your app loads it will be back. I suggest if you want to populate a table view with array data and be able to delete, then save a NSArray to NSUserDefaults and use setObject, and removeObjectAtIndex.

But that just my 2 cents.

BrianSlick · August 2011

Bopols;365328 said:
you just need to delete the object from the array and then call [tableview reloadData]

If you want a nice animation, this is not the correct approach.

iAS · August 2011

I have the UITableView Working to delete the values from NSMutableArray A and the reload the UItableView.

But, Now i have to update the plist by updated NSMutableArray.

Let the Custom Object be z
z { fname, lastname, address }

My NSMutableArray A consists of Custom Object z not Just One Element in the NSMutableArray

Now due to custom object i am unable to use writeTofile in plist with updated NSMutableArray.

could someone suggest something on the issue

Thankx for any reply.

the_magic_man · August 2011

I'm not 100% sure I understand the problem you're having, but are you using the TableViewDataSource protocol? If you are, and you're implementing

tableView:commitEditingStyle:forRowAtIndexPath:

then you should be able to handle changing the data source and animating the deletion of the row in one stroke. That method is called when the tableview is sent an "insert" or "delete" message and is basically there to allow the TableViewDataSource to make changes to match the view's content.

Also, are you using Core Data to model your content? it seems like persisting your data in a relational model instead of custom objects might be easier. That way each array is only holding an fundamental object (NSString, int, BOOL), and that's all tied together at runtime

Bopols · August 2011

BrianSlick;365535 said:
If you want a nice animation, this is not the correct approach.

so what's the correct one? I might use that instead so the user will at least know that the cell is being deleted by fading out the cell or something.

thanks

BrianSlick · August 2011

Bopols;365728 said:
so what's the correct one? I might use that instead so the user will at least know that the cell is being deleted by fading out the cell or something.

Insert or delete rows. Reloading the whole table is brute force. See the overview presentation in the table view link in my signature. I really need to get the next blog post written.

the_magic_man · August 2011

BrianSlick;365730 said:
Insert or delete rows. Reloading the whole table is brute force. See the overview presentation in the table view link in my signature. I really need to get the next blog post written.

good series so far

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Delete the Cell from UITableView

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