pass value in splitview detailview - ios

Question

I have a splitview app, a table with customers to the left and their info on the right so i have to pass witch customer that is clicked and i can't use the name in case of two have the same so im trying to pass over the customer id in the tag property of the cell but i dont get it to work.
Here is where i set the value, i can see it's working when debugging
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:#"Cell" forIndexPath:indexPath];
Customer names
NSDate *object = _objects[indexPath.row];
//Customer number
NSString *nr = _kundnr[indexPath.row];
//Customer name
cell.textLabel.text = [object description];
//Customer number
NSInteger Ftgnr = [nr intValue];
//Setting the customer number to cell tag
cell.tag = Ftgnr;
return cell;
}
Here i pick up the cell.tag it's the detailview viewdidload, i tried many different ways to save the id to a variable but the app crashes and i don't know if the value gets passed.
It's working to pick up the description (customer name) but i want the id.
- (void)configureView
{
// Update the user interface for the detail item.
if (self.detailItem) {
// NSString *strCellTag = [NSString stringWithFormat:#"%d", [self.detailItem tag]];
//here im trying to pick up the tag value this is where the app craches
NSInteger Ftgnr = [self.detailItem tag];
// NSString *stringformat = [NSString stringWithFormat:#"%d", Ftgnr];
//Its working to pick up the text from the cell
self.detailDescriptionLabel.text = [self.detailItem description];
}
Thank you for your help!

Answer 1

Add a property to your detail view controller so you can set the id when you set the detail item. Then:
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
self.detailViewController.detailIdentity = _kundnr[indexPath.row];
self.detailViewController.detailItem = _objects[indexPath.row];
}
And then use self.detailIdentity instead of [self.detailItem tag]. And, it's already a string so you don't need to convert to integer and back.
You should probably also:
Rename detailItem to be more specific, like detailDate
Think about creating a custom class to hold the full detailItem (so it contains the identity and the date)

Answer 2

My final code
Masterviewcontroller
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath: (NSIndexPath *)indexPath
{
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:#"Cell" forIndexPath:indexPath];
NSDate *object = _objects[indexPath.row];
cell.textLabel.text = [object description];
return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
NSDate *object = _objects[indexPath.row];
NSDate *kundnr = _kundnr[indexPath.row];
self.detailViewController.detailItem = object;
self.detailViewController.detailIdentity = kundnr;
}
Detailviewcontroller
- (void)setDetailItem:(id)newDetailItem
{
if (_detailItem != newDetailItem) {
_detailItem = newDetailItem;
// Update the view.
[self configureView];
}
if (self.masterPopoverController != nil) {
[self.masterPopoverController dismissPopoverAnimated:YES];
}
}
- (void)setDetailIdentity:(id)newDetailItentity
{
if (_detailIdentity != newDetailItentity) {
_detailIdentity = newDetailItentity;
// Update the view.
[self configureView];
}
if (self.masterPopoverController != nil) {
[self.masterPopoverController dismissPopoverAnimated:YES];
}
}
- (void)configureView
{
// Update the user interface for the detail item.
if (self.detailItem) {
// NSString *stringformat = [NSString stringWithFormat:#"%d", Ftgnr];
self.detailDescriptionLabel.text = [self.detailItem description];
}
if (self.detailIdentity) {
NSString *kundnr = [self.detailIdentity description];
}
}