我如何自定义导航返回按钮在iOS 7及以上没有标题?(即只使用箭头)

self.navigationItem.leftBarButtonItem = self.editButtonItem;

我只是想知道它们是否有self。backbuttonitem;

OR

像这样的东西?

self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc]
                   initWithBarButtonSystemItem:UIBarButtonSystemItemBACK 
                   target:self action:@selector(back)];

当前回答

你可以在viewWillDisappear上将当前ViewController的标题改为@"",当它即将再次显示时,将标题重新设置为之前的标题。

-(void) viewWillAppear:(BOOL)animated {
    [super viewWillAppear:animated];
    self.title = @"Previous Title";
}

-(void) viewWillDisappear:(BOOL)animated {
    [super viewWillDisappear:animated];
    self.title = @"";
}

其他回答

这是有效的,但它会删除前一项的标题,即使你弹出回到它:

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

只需要在推送视图控制器的viewDidLoad上设置这个属性。

这在iOS6和ios7上都很有效

Xamarin (c#)选项

var buttonStyleItems = UIBarButtonItem.AppearanceWhenContainedIn(typeof(SettingsNavigationController));
buttonStyleItems.SetBackButtonTitlePositionAdjustment(new UIOffset(-1000, -1000), UIBarMetrics.Default);

objective - c选项

[[UIBarButtonItem外观]setBackButtonTitlePositionAdjustment:UIOffsetMake(-1000, -1000) forBarMetrics:UIBarMetricsDefault];

这招对我很管用

[[UIBarButtonItem appearance] 
setBackButtonTitlePositionAdjustment:UIOffsetMake(-1000, -1000) 
forBarMetrics:UIBarMetricsDefault];

愿一切都好!

如果你有两个ViewController(FirstVC, seconddvc)嵌入在导航控制器中,你想在seconddvc中只有后退箭头。

你可以试试这个 在FirstVC的ViewDidLoad中

override func viewDidLoad() {
    super.viewDidLoad()
    self.navigationItem.backBarButtonItem = UIBarButtonItem(title: "", style: .Plain, target: nil, action: nil)
}

然后当你推到seconddvc,你会看到只有后退箭头

你不能以你想要的方式访问导航backButtonItem,你需要创建自己的返回按钮,如下所示:

- (void)loadView
{
    [super loadView];
    UIButton *backButton = [[UIButton alloc] initWithFrame: CGRectMake(0, 0, 44.0f, 30.0f)];
    [backButton setImage:[UIImage imageNamed:@"back.png"]  forState:UIControlStateNormal];
    [backButton addTarget:self action:@selector(popVC) forControlEvents:UIControlEventTouchUpInside];
    self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:backButton];
}

当然了:

- (void) popVC{
  [self.navigationController popViewControllerAnimated:YES];
}