当视图标题很长时,iOS7 UINavigationBar中显示"back"文本

在iOS 7中,不允许将后退按钮的标题设置为长度超过11个字符.

要避免更改视图控制器的标题,但要更改后退按钮的标题,您需要执行以下操作:

在上一个视图控制器(将在其上推动下一个视图控制器的控制器)中,您需要设置backBarButtonItem,如下所示:

/**
 *  Notifies the view controller that its view was added to a view hierarchy.
 *
 *  @param  animated                    If YES, the view was added to the window using an animation.
 */
- (void)viewDidAppear:(BOOL)animated
{
    [super viewDidAppear:animated];

    self.title = @"My Title Can Be Long";

    self.navigationItem.backBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"ThisIsLimit"
                                                                             style:UIBarButtonItemStylePlain
                                                                            target:nil
                                                                            action:nil];
}

现在,当下一个视图控制器被推到它上面时,后退按钮将是你在backBarButtonItem中放置的任何标题.

由于声誉低,我无法添加评论,因此我发布了答案,而这实际上并不是答案.

但,

self.navigationController.navigationBar.topItem.title = @"";

在其中一个答案中写的,相当于:

self.title = @"";

试试这个,

self.navigationController.navigationBar.topItem.title = @"";