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

其实很简单,我是这么做的:

Objective - C

// Set this in every view controller so that the back button displays back instead of the root view controller name
self.navigationItem.backBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"" style:UIBarButtonItemStylePlain target:nil action:nil];

斯威夫特2

self.navigationItem.backBarButtonItem = UIBarButtonItem(title: "", style: .Plain, target: nil, action: nil)

斯威夫特3

self.navigationItem.backBarButtonItem = UIBarButtonItem(title: "", style: .plain, target: nil, action: nil)

把这一行放到推送到堆栈(前一个视图控制器)的视图控制器中。新按下的视图控制器返回按钮现在将显示你为initWithTitle所放的任何东西,在本例中是一个空字符串。

其他回答

 // add left bar button item

try this code:

- (void)viewDidLoad
{ 
    [super viewDidLoad];

   UIImage* image_back = [UIImage imageNamed:@"your_leftarrowImage.png"];
    CGRect backframe = CGRectMake(250, 9, 15,21);
    UIButton *backbutton = [[UIButton alloc] initWithFrame:backframe];
    [backbutton setBackgroundImage:image_back forState:UIControlStateNormal];
    [backbutton addTarget:self action:@selector(Btn_back:)
         forControlEvents:UIControlEventTouchUpInside];
    [backbutton setShowsTouchWhenHighlighted:YES];
    UIBarButtonItem *backbarbutton =[[UIBarButtonItem alloc] initWithCustomView:backbutton];
    self.navigationItem.leftBarButtonItem=backbarbutton;
    [backbutton release];

}
-(IBAction)Btn_back:(id)sender
{
    [self.navigationController popViewControllerAnimated:YES];

}

为你的根视图控制器创建一个带有标题的UILabel,并将它分配给视图控制器的navigationItem.titleView。

现在将标题设置为空字符串,你按下一个视图控制器将有一个没有文本的返回按钮。

self.navigationItem.titleView = titleLabel; //Assuming you've created titleLabel above
self.title = @"";

你不需要做什么。你可以通过故事板本身来实现同样的效果。

只要到根导航控制器,并给一个空间。记住,返回按钮不是指向你想要的没有标题的控制器,而是指向根导航控制器。

只用一张图片!

OBJ - c:

- (void)viewDidLoad {
     [super viewDidLoad];
     UIBarButtonItem *backButton = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"Icon-Back"]
                                                                                        style:UIBarButtonItemStylePlain
                                                                                       target:self.navigationController
                                                                                       action:@selector(popViewControllerAnimated:)];
     self.navigationItem.leftBarButtonItem = backButton;
}

斯威夫特4:

let backBTN = UIBarButtonItem(image: UIImage(named: "Back"), 
                              style: .plain, 
                              target: navigationController, 
                              action: #selector(UINavigationController.popViewController(animated:)))
navigationItem.leftBarButtonItem = backBTN
navigationController?.interactivePopGestureRecognizer?.delegate = self

Icon-Back.png

Icon-Back@2x.png

Icon-Back@3x.png

这招对我很管用

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

愿一切都好!