Get IndexPath for selected accessory button in UITableView

Question

I have a problem with the UItableViewCell accessory button. My accessory button is "connected" with a segue to another UIViewController. When I tap on an accessory button, I get the object from the model and I "pass" this object to the segue destinationViewController. This is my prepare for segue method:

-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    if ([segue.identifier isEqualToString:@"IdentityCard"])
    {
        NSLog(@"%i" ,self.tableView.indexPathForSelectedRow.row);
        [segue.destinationViewController showIdentityCardForTeacher:[self.teachers getTeacherInPosition:self.tableView.indexPathForSelectedRow.row]];
    }
}

The problem is that the NSLog at the beginning of the method (after the "if") show always the number 0! I tried to implement the method:

-(void)tableView:(UITableView *)tableView accessoryButtonTappedForRowWithIndexPath:(NSIndexPath *)indexPath

but the prepare for segue method is executed before this method, so I can't set any @property for "save" the indexPath. How can I solve this problem?

Answer 1

In:

-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender

...you have the 'sender' parameter that lets you know the Cell of the accessory that has been Tapped, so with:

index = [self.tableView indexPathForCell:sender].row;

You can get the index of it in order to use it.

Then you don't need to use the tableView's accessoryButtonTappedForRowWithIndexPath method.

Answer 2

I fix the problem in this way: I connected the UIViewController to the destinationViewController (NOT FROM THE ACCESSORY BUTTON BUT FROM THE UIViewController).

I created a @property in the first View Controller:

@property (nonatomic) NSInteger indexPathRow;

then I modified the code like this:

-(void)tableView:(UITableView *)tableView accessoryButtonTappedForRowWithIndexPath:(NSIndexPath *)indexPath
{
    NSLog(@"Disclosure Tapped----> %i" ,indexPath.row);
    self.indexPathRow = indexPath.row;
    [self performSegueWithIdentifier:@"IdentityCard" sender:self];
}

-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    if ([segue.identifier isEqualToString:@"IdentityCard"])
    {
        NSLog(@"%i" ,self.tableView.indexPathForSelectedRow.row);
        [segue.destinationViewController showIdentityCardForTeacher:[self.teachers getTeacherInPosition:self.indexPathRow]];
    }
}

Now it works!