How to determine the size / frame of a custom UINavigationItem.titleView?

Question

After you create a custom view and assign its navigationItem.titleView property, it appears as follows

with a custom view filling the gap between the two buttons. Therefore, the user view is not oriented to the navigation bar. How to define a view frame in a .titleView property? I want to focus the text on the navigation bar, say, under the time stamp.

Answer 1

titleView ( ), :

[self.navBar layoutIfNeeded];
CGRect titleViewFrameInTopLevelViewSpace = [self.navigationItem.titleView
    convertRect:self.navigationItem.titleView.bounds
    toView:self.view];

layoutIfNeeded, titleView, , .

titleView , . , ( ) . :

• titleView XIB. :
  
  128x33. . , "". .

• titleView viewDidLoad:

  - (void)viewDidLoad
  {
      [super viewDidLoad];
      UIView *customView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 50, 33)];
      customView.backgroundColor = [UIColor greenColor];
      self.navItem.titleView = customView;
   }
  

  :
  

Answer 2

leftBarButtonItem rightBarButtonItem , , , , titleView. , ?