Switching UIViewControllers in iOS not working - ios

Question

I am trying to show a UIViewController on top of other UIViewcontroller using addChildViewController functionality.The childViewController is a tableView which shows up on top of my MainViewController however I do not see the table view that it has.If I execute the childViewController separately , the tableView works fine , so what am I missing here.
Here's how I am adding a childVC:
#implementation Test2ViewController
- (void)viewDidLoad
{
[super viewDidLoad];
}
- (IBAction)showChildVC:(id)sender
{
TestTableViewController *tVC = [[TestTableViewController alloc]init];
tVC.view.frame = CGRectMake(50, 50, 200, 200);
[self addChildViewController:tVC];
[self.view addSubview:tVC.view];
[tVC didMoveToParentViewController:self];
}
And this is the childVC that I want to show: .h
#import <UIKit/UIKit.h>
#interface TestTableViewController : UIViewController<UITableViewDataSource>
{
NSArray *array;
}
#property (weak, nonatomic) IBOutlet UITableView *tableView;
#end
And: .m
- (void)viewDidLoad
{
[super viewDidLoad];
self.view.backgroundColor = [UIColor grayColor];
array = [NSArray arrayWithObjects:#"One",#"Two",#"Three",#"Four", nil];
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [array count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *cellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdentifier];
}
cell.textLabel.text = [array objectAtIndex:indexPath.row];
return cell;
}

Answer 1

I see your table view in the second view controller is an IBOutlet, so you are placing it in Storyboard.
Then when you instantiate it, you can't do: [[TestTableViewController alloc]init]; you have to do:
[storyBoard instantiateViewControllerWithIdentifier:#"tVCStoryBoardID"];