如何在viewDidLoad之前初始化UITableView？

Question

I have to initialize my UITableView instance within viewDidLoad , such as:

tableView1 = UITableView(frame: frame)

However, when I tried to access the view controller that includes the tableView1 , the UITableViewDataSource 's tableView: numberOfRowsInSection: is called before the viewDidLoad method, and within the numberOfRowsInSection: , I want to refer to the tableView1 like if tableView == tableView1 .

However, then how can I initialize the tableView1 before calling viewDidLoad ? If I tried to initialize it within viewDidLoad but still refer to it from within numberOfRowsInSection: , then it causes the error: fatal error: unexpectedly found nil while unwrapping an Optional value because it is not initialized yet and hence its value is nil .

I think if I use storyboard and @IBOutlet , I don't have the problem. But now I use them all from my code, so I'm not sure how I can cope with the issue.

UPDATE

If this cannot be done as posted by @coolcracker, then how can I port this Objective-C code?

-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
id <NSFetchedResultsSectionInfo> sectionInfo;
if (tableView == _tableView1) {
    sectionInfo = _frc1.sections[section];
} else if (tableView == _tableView2) {
    sectionInfo = _frc2.sections[section];
}

return sectionInfo.numberOfObjects;
}

Answer 1

Don't use Storyboard at all, just declare and initialise your tableview as follows

@interface ApplicationsPageGroups : UIViewController
{
  UITableView* tableView1; 
}

- (void)viewDidLoad 
{
   [super viewDidLoad];
   tableView1 = [[UITableView alloc] init];
   tableView1.frame = CGRectMake(10, 95, [UIScreen mainScreen].bounds.size.width-20, [UIScreen mainScreen].bounds.size.height-230);
   tableView1.delegate = self;
   tableView1.dataSource = self;
   tableView1.tableFooterView = [[UIView alloc] init] ;
   [self.view addSubview:tableView1];
   [self getTableData];
 }
 -(void) getTableData
{
   // after you get some array of data to fill the tableview
   [tableView1 reloadData];
}

Now override all the UITableView delegate and dataSource methods.

Answer 2

simply add

[tableView1 reloadData];

which call your DataSource methods call again

Answer 3

You could override the view controller initWithFrame or initWithNibOrNil method and initialize the tableViews there.

Also, have you tried initializing the table views BEFORE calling the [super viewDidLoad] method? I have not checked, but it may be possible that the superclass controller is calling the reload method before your initializers, depending on your class hierarchy.