Cocoa touch PopOverController中的TableView

我正在创建一个应用程序，其中有一个

UITableviewController

类，其中有一个IB文件，其中有一个

UITableView

。在我的

UIViewController

类中，我正在创建一个

UIPopOverController

并将导航控制器分配给该popover的contentview。在导航控制器中，根视图是

UITableView

控制器对象。我正在处理的问题是，单击一个条形按钮时弹出窗口的显示，其中显示了

UITableView

。问题是，因为TabelVIEW的委托和数据源方法从未被调用，所以它只显示空白的TabLeVIEW。这是我在调试时检查过的。我正在这里粘贴代码。请回答为什么我的委托和数据源方法没有被调用

这是ViewController.m：-

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil{

      self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
      if (self) {
      arr_settings = [[NSMutableArray alloc]           
      initWithObjects:@"shikhar",@"gulshan",@"bhargav", nil];

       //tbl_settings.delegate = self;
      // tbl_settings.dataSource = self;
      //self.title = @"Settings";
     //arr_settings = [[NSMutableArray alloc] 
     initWithObjects:@"shikhar",@"gulshan",@"bhargav", nil];

     // Custom initialization
   }
     return self;
 }

 -(IBAction)btn_settings:(id)sender{
  TableViewController * settingstable = [[TableViewController alloc] 
  initWithNibName:@"TableViewController" bundle:Nil];
  settingstable.tbl_settings.delegate = self;
  settingstable.tbl_settings.dataSource = self;
  //settingstable.tbl_settings.transform = CGAffineTransformMakeScale(1, 1);
  //settingstable.tbl_settings.tag = 1;
  //[self.view addSubview:settingstable.view];
  UINavigationController *nav = [[UINavigationController alloc]
  initWithRootViewController:settingstable];
  UIPopoverController * pickerPopover = [[UIPopoverController alloc] 
  initWithContentViewController:nav];

  pickerPopover.delegate = self;
  self.popovercontroller = pickerPopover;
  //CGRect popoverRect = [self.view convertRect:[_btn_settings frame] fromView: 
  [_btn_settings superview]];
  //popoverRect.size.width = MIN(popoverRect.size.width, 100);
  pickerPopover.popoverContentSize = settingstable.tbl_settings.frame.size;
  [settingstable.tbl_settings reloadData];
  [pickerPopover presentPopoverFromBarButtonItem:sender  
  permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
 }
  - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
    {
      return 1;
    }

  - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:
    (NSInteger)section
    {
       NSLog(@"%u",[arr_settings count]);
       return [arr_settings count];

    }

   // Customize the appearance of table view cells.
   - (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];
          if ([[UIDevice currentDevice] userInterfaceIdiom] ==  
          UIUserInterfaceIdiomPhone) {
          cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
         }
     }


          cell.textLabel.text = [arr_settings objectAtIndex:indexPath.row];
          NSLog(@"%@",cell.textLabel.text);
          return cell;

      }

---

我还在TableViewController类中声明了TableView的IBOutlet。ViewController.h类中提到了数据源和委托协议。如果提问方式有误，请帮助我并原谅我。

问题是由于在呈现表格视图之前设置了代理。现在就这样替换这个

settingstable.tbl_settings.delegate = self;
settingstable.tbl_settings.dataSource = self;

[settingstable.tbl_settings reloadData];

在像这样展示了pickerview之后

    TableViewController * settingstable = [[TableViewController alloc]
                                           initWithNibName:@"TableViewController" bundle:Nil];

    UINavigationController *nav = [[UINavigationController alloc]
                                   initWithRootViewController:settingstable];
    UIPopoverController * pickerPopover = [[UIPopoverController alloc]
                                           initWithContentViewController:nav];

    pickerPopover.delegate = self;
    self.popovercontroller = pickerPopover;

   [_btn_settings superview]];

    pickerPopover.popoverContentSize = settingstable.tbl_settings.frame.size;
    [pickerPopover presentPopoverFromRect:sender.frame inView:self.view permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];

    settingstable.tbl_settings.delegate = self;
    settingstable.tbl_settings.dataSource = self;

    [settingstable.tbl_settings reloadData];

---

这对我来说很管用

TableViewController是一个单独的视图控制器，对吗？是的，它是一个单独的视图控制器，在XIB文件中只有UItableView。