Question

I have created a five column (text boxes) cell (row) in table view controller with an option of add button. When a user clicks on add button, a new row (cell) with five column (text boxe) is added in a table view controller with null values. I want that when user fills the text boxes the data should get saved in database or if he changes any data in previous text boxes also it get saved.

this is my save btn coding..

- (IBAction)btn_save:(id)sender
{
    NSInteger noOfRow=[(NSSet *)[projectObject valueForKey:@"rs_project_Input"] count];
    NSLog(@"Save Btn: No of rows for saving %d",noOfRow);
    for (row1=0; row1<noOfRow; row1++)
    {
        NSLog(@"Row is %d",row1);

        path = [NSIndexPath indexPathForRow:row1 inSection:0];

        Input_Details *inputDetailsObject1=[[self sortInputs] objectAtIndex:path.row];
        /*
          Update the input details from the values in the text fields.
        */
        EditingTableViewCell *cell;

        cell = (EditingTableViewCell *)[self.tableView cellForRowAtIndexPath:[NSIndexPath indexPathForRow:row1 inSection:0]];
        inputDetailsObject1.mh_Up= cell.cell_MH_up.text;
        inputDetailsObject1.mh_down=cell.textField.text;
        NSLog(@"Saving the MH_up value %@ is saved in save at index path %d",inputDetailsObject1.mh_Up,row1);

        [masterController saveContext];
    }
    [self.tableView reloadData];
}

My problem is that the code is not helping in saving the data. Plz help.
Thanks

Answer 1

You try to use the table view cells as a data source, which will not work (apart from being a bad design). The problem is that

[self.tableView cellForRowAtIndexPath:[NSIndexPath indexPathForRow:row1 inSection:0]]

returns nil if the cell at that row is currently not visible. (A table view allocates only cells for the visible rows and reuses these cells as you scroll up or down.)

You have to track changes to the text fields immediately, e.g. by implementing a textFieldDidEndEditing: delegate function, and store the changed text in your data source.