Situation when add a custom button in a row whenever is selected

Question

Objective:

• Add a custom button as titled Delete in a row whenever it selected

• And remove it whenever cell selection changes and so on add 'Delete' to last selection.

  (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath*)indexPath{
      self.myIndexPath=indexPath;
      UIButton *btnCustomDelete=[[UIButton alloc] initWithFrame:CGRectMake(260, 10, 60, 7)];
      [btnCustomDelete setTitle:@"Delete" forState:UIControlStateNormal];
      [tblCellForContactTable.contentView addSubview: btnCustomDelete];  //I think correction wants here  
  
      [btnCustomDelete addTarget:self action:@selector(actionCustomDelete:)  forControlEvents:UIControlEventTouchUpInside];
  }
  
  -(IBAction) actionCustomDelete:(id)sender{
      [arrForMyContacts removeObject:[arrForMyContacts objectAtIndex:myIndexPath.row]];
      [tblForContacts reloadData];
  }
  

But, its not worked all time.

Answer 1

You are right. You should add button as a subview to your actual UITableViewCell object, which you can achieve using tableView:cellForRowAtIndexPath: data source method.

So, your implementation can be something like (after creating your btnCustomDelete):

UITableViewCell * myCell = [tableView cellForRowAtIndexPath:indexPath]
[myCell.contentView addSubview:btnCustomDelete];

Please keep reading.

Your implementation is not a healthy solution to delete a row from a table. You can have delete action easily with implementing some UITableView data source and delegate methods, without adding a custom button, like below:

- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath
{
    return YES;
}

- (UITableViewCellEditingStyle)tableView:(UITableView *)tableView editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath
{
    return UITableViewCellEditingStyleDelete;
}

- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath
{
    [arrForMyContacts removeObjectAtIndex:indexPath.row];
    [tableView deleteRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationAutomatic];
}