84

之前用的是iOS 6.1，现在换到iOS 7了在 iOS 7 中比在 iOS 6 中更多。

我需要知道有没有办法可以减少导航栏中左右栏按钮项目的空白？

提前致谢。

4

14 回答 14

223

我也面临这个问题。我也觉得在 iOS 7 中有更多的空间。我发现这大约多出 10 个点。当我想LeftBarItemButton从边缘开始时，我通常使用负空格。这对您也很有用。

UIBarButtonItem *negativeSpacer = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace target:nil action:nil];

negativeSpacer.width = -16; // it was -6 in iOS 6

[self.navigationItem setLeftBarButtonItems:@[negativeSpacer, requiredButton]; /* this will be the button which you actually need */] animated:NO];
于 2013-09-20T13:45:15.523 回答
23

基于@C_X 他的回答，我创建了一个类别，根据当前设备的 iOS 版本添加和定位 UIBarButtonItem。

// UINavigationItem+Additions.h
@interface UINavigationItem (Additions)
- (void)addLeftBarButtonItem:(UIBarButtonItem *)leftBarButtonItem;
- (void)addRightBarButtonItem:(UIBarButtonItem *)rightBarButtonItem;
@end

// UINavigationItem+Additions.m
@implementation UINavigationItem (Additions)

- (void)addLeftBarButtonItem:(UIBarButtonItem *)leftBarButtonItem
{
    if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 7.0) {
        // Add a negative spacer on iOS >= 7.0
        UIBarButtonItem *negativeSpacer = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace
                              target:nil action:nil];
        negativeSpacer.width = -10;
        [self setLeftBarButtonItems:[NSArray arrayWithObjects:negativeSpacer, leftBarButtonItem, nil]];
    } else {
        // Just set the UIBarButtonItem as you would normally
        [self setLeftBarButtonItem:leftBarButtonItem];
    }
}

- (void)addRightBarButtonItem:(UIBarButtonItem *)rightBarButtonItem
{
    if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 7.0) {
        // Add a negative spacer on iOS >= 7.0
        UIBarButtonItem *negativeSpacer = [[UIBarButtonItem alloc]
                                       initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace
                                       target:nil action:nil];
        negativeSpacer.width = -10;
        [self setRightBarButtonItems:[NSArray arrayWithObjects:negativeSpacer, rightBarButtonItem, nil]];
    } else {
        // Just set the UIBarButtonItem as you would normally
        [self setRightBarButtonItem:rightBarButtonItem];
    }
}

@end

在您的视图控制器中，您现在可以使用[self.navigationItem addLeftBarButtonItem:leftBarButtonItem];和[self.navigationItem addRightBarButtonItem:rightBarButtonItem];

我也尝试过子类化UIButton和覆盖-alignmentRectInsets，但这给我带来了视图之间的转换问题。

于 2013-09-25T15:11:11.907 回答
10

对于 Swift 2.0，这是我获得以下效果的解决方案......

（实际值可能会有所不同，视您的情况而定）

在此处输入图像描述

let captureButton = UIButton()
captureButton.setTitle("CAPTURE DETAILS", forState: .Normal)
captureButton.frame = CGRectMake(0, 0, 200, 95)
captureButton.addTarget(self, action: Selector("showCaptureDetailsForm:"), forControlEvents: .TouchUpInside) // *** See update below for Swift 2.2 syntax
captureButton.setBackgroundImage(UIImage(named: "blueTopRight"), forState: .Normal)
        
let rightBarButton = UIBarButtonItem()
rightBarButton.customView = captureButton        
        
let negativeSpacer = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.FixedSpace, target: nil, action: nil)
negativeSpacer.width = -25;
        
self.navigationItem.setRightBarButtonItems([negativeSpacer, rightBarButton ], animated: false)

斯威夫特 2.2 更新：

对于 Swift 2.2，action: Selector方法已更改，应按如下方式键入

captureButton.addTarget(self, action: #selector(YourViewController.showCaptureDetailsForm(_:)), forControlEvents: .TouchUpInside)

于 2016-03-18T09:20:39.967 回答
9

这是我的解决方案Swift 3.0：

rightBtn.imageInsets = UIEdgeInsets(top: 0, left: -13.0, bottom: 0, right: 13.0) 
self.navigationItem.rightBarButtonItem = rightBtn
于 2017-03-09T04:11:48.760 回答
6

为了修复这个错误，你必须继承子类UIButton以便你可以覆盖alignmentRectInsets. 根据我的测试，您需要返回UIEdgeInsets带有正右偏移或正左偏移的 a，具体取决于按钮位置。这些数字对我来说毫无意义（根据常识，至少其中一个应该是负数），但实际上是这样的：

- (UIEdgeInsets)alignmentRectInsets {
    UIEdgeInsets insets;
    if (IF_ITS_A_LEFT_BUTTON) {
        insets = UIEdgeInsetsMake(0, 9.0f, 0, 0);
    } 
    else { // IF_ITS_A_RIGHT_BUTTON
        insets = UIEdgeInsetsMake(0, 0, 0, 9.0f);
    }
    return insets;
}

特别感谢@zev 建议我尝试调整alignmentRectInsets.

于 2013-09-20T13:54:44.993 回答
5

在smek 的带领下，我创建了一个类别，但对其进行了修改以提供向后兼容性而不是向前兼容性。我在 iOS 7 中设置了一切以按照我想要的方式工作，然后如果用户运行的东西较低，我就开始处理事情。

@interface UINavigationItem (BarButtonItemSpacingSupport)

- (void)addLeftBarButtonItem:(UIBarButtonItem *)leftBarButtonItem;
- (void)addRightBarButtonItem:(UIBarButtonItem *)rightBarButtonItem;

@end

@implementation UINavigationItem (BarButtonItemSpacingSupport)

- (void)addLeftBarButtonItem:(UIBarButtonItem *)leftBarButtonItem
{
    if (SYSTEM_VERSION_LESS_THAN(@"7.0")) {
        // Add a spacer on when running lower than iOS 7.0
        UIBarButtonItem *negativeSpacer = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace
                                                                                        target:nil action:nil];
        negativeSpacer.width = 10;
        [self setLeftBarButtonItems:[NSArray arrayWithObjects:negativeSpacer, leftBarButtonItem, nil]];
    } else {
        // Just set the UIBarButtonItem as you would normally
        [self setLeftBarButtonItem:leftBarButtonItem];
    }
}

- (void)addRightBarButtonItem:(UIBarButtonItem *)rightBarButtonItem
{
    if (SYSTEM_VERSION_LESS_THAN(@"7.0")) {
        // Add a spacer on when running lower than iOS 7.0
        UIBarButtonItem *negativeSpacer = [[UIBarButtonItem alloc]
                                           initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace
                                           target:nil action:nil];
        negativeSpacer.width = 10;
        [self setRightBarButtonItems:[NSArray arrayWithObjects:negativeSpacer, rightBarButtonItem, nil]];
    } else {
        // Just set the UIBarButtonItem as you would normally
        [self setRightBarButtonItem:rightBarButtonItem];
    }
}

@end

然后为了全局获取这个，我有一个瘦子UIViewController类，我的所有视图控制器都继承自该子类。

@interface INFViewController : UIViewController

@end

@implementation INFViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    if (SYSTEM_VERSION_LESS_THAN(@"7.0")) {
        [self setupNavBarForPreIOS7Support];
    }
}

- (void)setupNavBarForPreIOS7Support {
    if (self.navigationController) {
        UINavigationItem *navigationItem = self.navigationItem;
        UIBarButtonItem *leftItem = navigationItem.leftBarButtonItem;
        UIBarButtonItem *rightItem = navigationItem.rightBarButtonItem;

        if (leftItem) {
            [navigationItem addLeftBarButtonItem:leftItem];
        }

        if (rightItem) {
            [navigationItem addRightBarButtonItem:rightItem];
        }
    }
}

@end

我意识到我正在检查操作系统版本两次（一次INFViewController又一次在类别中），我把它留在类别中，以防我想在项目的任何地方一次性使用它。

于 2013-10-03T21:37:54.890 回答
5 
As of iOS 11 wont accept negative space width, in order to align the bar button items to the margin, I have used the below code.

 override func viewWillLayoutSubviews() {
                super.viewWillLayoutSubviews()
                for view in (self.navigationController?.navigationBar.subviews)! {
                    view.layoutMargins = UIEdgeInsets.zero
                }
            }
于 2018-09-17T14:43:59.473 回答
5

快速你可以做到这一点

var negativeSpace:UIBarButtonItem = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.FixedSpace, target: nil, action: nil)
negativeSpace.width = -17.0
self.navigationItem.rightBarButtonItems = [negativeSpace, requiredButton /* this will be the button which you actually need */]
于 2016-03-22T04:47:29.017 回答
4

斯威夫特 3：

let negativeSpacer:UIBarButtonItem = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.fixedSpace, target: nil, action: nil)
        negativeSpacer.width = -10
self.navigationItem.leftBarButtonItems = [negativeSpacer, yourBarButtonItem]
于 2017-03-05T13:59:55.420 回答
2

斯威夫特 3.1

给左栏按钮项目负空间：

    let backButton = UIButton.init(type: .custom)
    backButton.frame = CGRect.init(x: 0, y: 0, width: 40, height: 40)
    // negative space
    backButton.contentEdgeInsets = UIEdgeInsets(top: 0, left: -44.0, bottom: 0, right: 0)
    backButton.setImage(Ionicons.iosArrowBack.image(30, color: UIColor(hex: 0xFD6250)), for: .normal)
    backButton.addTarget(self, action: #selector(InviteVC.goBack), for: .touchUpInside)   
    // set back button
    self.navigationItem.leftBarButtonIteUIBarButtonItem.init(customView: backButton)
于 2017-06-04T19:51:12.070 回答
2

负空间不适用于 iOS 11

override func viewWillLayoutSubviews() {
    super.viewWillLayoutSubviews()
    // to remove navigation bar extra margin
    for view in (self.navigationController?.navigationBar.subviews)! {
        view.layoutMargins = UIEdgeInsets.zero
    }
}

上面的代码将从 leftBarButtonItem 和 RightBarButtonItem 两侧删除边距。如果您需要添加额外的边距（删除边距后）添加以下代码

    let rightButton = UIButton(frame: CGRect(x: 0, y: 0, width: 17, height: 20))
    rightButton.setImage(UIImage(named: "ic_cart"), for: .normal)

    let rightBarButtomItem = UIBarButtonItem(customView: rightButton)

    let spacer = UIBarButtonItem(barButtonSystemItem: UIBarButtonItem.SystemItem.fixedSpace, target: nil, action: nil)
    spacer.width = 28 //This will add extra margin on right side
    navigationItem.rightBarButtonItems = [spacer,rightBarButtomItem]
于 2019-03-06T12:05:28.940 回答
1

worked for me

rightBarButton.customView?.transform = CGAffineTransform(translationX: 10, y: 0)

于 2019-07-12T07:42:06.740 回答
0

我相信您需要使用带有UIButton子类的自定义按钮，并在您的子类中覆盖-alignmentRectInsets。我忘记了适当的边缘是否需要正值或负值才能使其正确移动，但如果一个不起作用，请尝试另一个。

于 2013-09-20T13:11:57.967 回答
-1

不错的决定，非常感谢！我只需要在导航标题的左侧添加两个元素。这是我的解决方案：

  // Settings Button
  // This trick correct spacing between two left buttons
  UIBarButtonItem *settingsButtonItem = [[UIBarButtonItem alloc] init];
  UIView *settingsButtonItemView = [[UIView alloc] initWithFrame:CGRectMake(0.0, 0.0, 22.0, 22.0)];
  settingsButtonItem.customView = settingsButtonItemView;
  UIButton *settingsButton = [UIButton buttonWithType:UIButtonTypeSystem];
  settingsButton.frame = settingsButtonItemView.frame;
  [settingsButton setImage:[UIImage imageNamed:@"settings"] forState:UIControlStateNormal];
  settingsButton.tintColor = [[[[UIApplication sharedApplication] delegate] window] tintColor];
  [settingsButton addTarget:self action:@selector(showSettings:) forControlEvents:UIControlEventTouchDown];
  [settingsButtonItemView addSubview:settingsButton];

  // Star Button
  UIBarButtonItem *starButtonItem = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"star_gray"] style:UIBarButtonItemStyleBordered target:self action:@selector(showStarred)];
  starButtonItem.width = 22.0;
  NSLog(@"%f", starButtonItem.width);

  // Negative Spacer
  // It shifts star button to the left
  UIBarButtonItem *negativeSpacer = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace target:nil action:nil];
  negativeSpacer.width = -10.0;

  NSArray *leftNavigtaionBarButtonItems = @[negativeSpacer, starButtonItem, settingsButtonItem];
  [self.navigationItem setLeftBarButtonItems:leftNavigtaionBarButtonItems];
于 2014-08-29T18:27:29.990 回答