Question

I am using a Master-Detail template.
I have a segmented control in the detail view and I have set the MasterViewController as the delegate.
This enables me to give the user choices.
I know the segmented control is working and passing the choices to the MVC.

I want each choice to trigger a new set of data which can then be loaded into the table view in the MasterViewController.
My problem is that I cannot then find a way to update the data in the table view.

Answer 1

You can use an instance variable declared in MasterViewController to be updated while UISegmentedControl changes. Based on that, When you come back to the MasterViewController; use its viewWillAppear to [tableView reloadData]

Tell me if I am getting your question wrong.

EDIT:

Take an integer name it segmentIndex; update as and when Segment gets changed. Based on the value of segmentIndex load the dataSource needed to be displayed on UITableView of your MasterViewController

EDIT 2:

When UISegmentedControl‘s value changes, put mvc.segmentIndex = (currentValueOfYourSegmentedControl);
Then in MasterViewController‘s viewWillAppear

switch (self.segmentIndex)
{
    case 0:
           // Set Datasource for First Choice.
           break;
    case 0:
           // Set Datasource for Second Choice.
           break;
    case 0:
           // Set Datasource for Third Choice.... and so on...
           break;
    default:
           // Default Behavior
           break;
}

Hope You Get My Point.