UIScrollView with many UITableVIew inside UIViewControllers disappear UITableViewCell's on tap - ios

Question

I need to make UIScrollView with UIViewController's inside, every UIViewController has UITableview.
When I tap to UITableview, all UITableViewCells are disappear.
How I initialise UIViewController inside UIScrollView?
- (void)viewDidLoad {
[super viewDidLoad];
int width = 0;
for (int i = 0; i < [self.dishes count]; i++) {
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"Order" bundle:nil];
OneDayDishViewController *myVC = (OneDayDishViewController *)[storyboard instantiateViewControllerWithIdentifier:#"OneDayDishViewController"];
myVC.dishes = self.dishes[i];
myVC.menuTitle = self.menuTitle;
[self.scrollView addSubview:myVC.view];
width += 375;
}
self.scrollView.contentSize = CGSizeMake(width,0);
}
After looking for in google & stack overflow I found this solution
So I done something like this
in my .h file (where I have UIScrollView):
#property (strong, nonatomic) OneDayDishViewController *myVC;
Than in my .m file:
- (void)viewDidLoad {
[super viewDidLoad];
int width = 0;
for (int i = 0; i < [self.dishes count]; i++) {
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"Order" bundle:nil];
self.myVC = [storyboard instantiateViewControllerWithIdentifier:#"OneDayDishViewController"];
self.myVC.dishes = self.dishes[i];
self.myVC.menuTitle = self.menuTitle;
[self.scrollView addSubview:self.myVC.view];
width += 375;
}
self.scrollView.contentSize = CGSizeMake(width,0);
}
Now I also have N elements in my scrollview, if I tap the last element - it's work fine, if I tap any other element - the problem is the same.
So what I do wrong or how I can create (strong) proper dynamically and is it good practice?
Thanks
UPDT:
Thank you #CZ54
my solution is add childviewcontroller so do
[self addChildViewController:myVC];
[self.scrollView addSubview:myVC.view];
[myVC didMoveToParentViewController:self];
instead of
[self.scrollView addSubview:myVC.view];

Answer 1

Adding the subview is not enough.
You have to add the entire controller using
addChildViewController: ( from https://developer.apple.com/documentation/uikit/uiviewcontroller/1621394-addchildviewcontroller )
And you have to retain every instance you are adding.
Change
#property (strong, nonatomic) OneDayDishViewController *myVC;
into
#property (strong, nonatomic) NSMutableArray<OneDayDishViewController*> *myVC;