ios – UINavigationItem titleView定位问题

我有一个iPad应用程序,在其中一个屏幕上我有一个UIToolbar设置为viewController的navigationItem的titleView.我还有一个leftBartonItem和一个rightBarButtonItem.

当我以横向进入屏幕并旋转设备时,titleView保持居中.但是,如果我执行相反操作(以纵向输入并旋转设备),则titleView将向右移动.有没有什么办法解决这一问题？这是我的代码：

UIView *titleView = [[UIView alloc] initWithFrame:CGRectMake(0,350,self.navigationController.navigationBar.frame.size.height)];
UIToolbar *titleToolbar = [[UIToolbar alloc] initWithFrame:CGRectMake(0,self.navigationController.navigationBar.frame.size.height)];
titleToolbar.items = @[commentButton,spacer2,downloadButton,spacer3,homeButton,spacer4,pageDisplayButton,spacer5,searchButton];
titleToolbar.autoresizingMask = UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleRightMargin;
[titleView addSubview:titleToolbar];
self.navigationItem.titleView = titleView;

编辑：

self.navigationItem.titleView.frame.size在两种情况下都是相同的,更改的东西是origin.x

UIToolbar *titleToolbar = [[UIToolbar alloc] initWithFrame:CGRectMake(0,self.navigationController.navigationBar.frame.size.height)];

UIView *titleView = [[UIView alloc] initWithFrame:CGRectMake(0,titleToolbar.frame.size.height)];

titleToolbar.items = @[commentButton,**titleViewBtn**,searchButton];
titleToolbar.autoresizingMask = UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleRightMargin;