objective-c : prepareForSegue method

prepareForSegue method.m

//prepareForSegue method


-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
    
    if ([[segue identifier] isEqualToString:@"addCourse"]) {
        
        //ex
        //1. to typical view controller with modal segue
        //AddCourseViewController *acvc = (AddCourseViewController *)[segue destinationViewController];
        
        //2. embed in navigation controller with modal segue
        UINavigationController *nav = [segue destinationViewController];
        AddCourseViewController *acvc = (AddCourseViewController *)[nav topViewController];
        
        acvc.delegate =self;
        
        Course *newCourse = (Course *) [NSEntityDescription insertNewObjectForEntityForName:@"Course" inManagedObjectContext:[self managedObjectContext]];
        
        acvc.currentCourse = newCourse;
    }
    
    if ([[segue identifier] isEqualToString:@"showDetail"]) {

        //3. to typical view controller with push segue
        DisplayEditViewController *dvc = (DisplayEditViewController *) [segue destinationViewController];
        NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
        Course *selectedCourse = (Course *) [self.fetchedResultsController objectAtIndexPath:indexPath];
        dvc.currentCourse = selectedCourse;
    }
}


/*

Again

When Using Modal Segue

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    if ([[segue destinationViewController] isEqualToString:@"Modal to MyVC"])
    {
        UINavigationController *nav = [segue destinationViewController];
        MyViewController *vc = [nav topViewController];
        //setup vc
    }
}
When Using Push Segue

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    if ([[segue destinationViewController] isEqualToString:@"Push to MyVC"])
    {
        MyViewController *vc = [segue destinationViewController];
        //setup vc
    }
}








 */