如何在 UINavigationBar [iOS 7] 中编辑左、右 UIBarButtonItem 的空白

Posted

技术标签:

【中文标题】如何在 UINavigationBar [iOS 7] 中编辑左、右 UIBarButtonItem 的空白【英文标题】:How to Edit Empty Spaces of Left, Right UIBarButtonItem in UINavigationBar [iOS 7] 【发布时间】:2013-09-25 17:25:49 【问题描述】:

我之前使用的是ios 6.1,但现在我已经转移到iOS 7。除了其他问题,我观察到在我的导航栏中,左侧栏按钮项目的左侧空间和右侧按钮栏的右侧空白区域项目在 iOS 7 中比在 iOS 6 中要多。

我想知道有没有办法可以减少导航栏中左右栏按钮项的空白??

提前致谢。

【问题讨论】:

试试这个:github.com/devxoul/UINavigationItem-Margin @devxoul,UINavigationItem-Margin 与 iOS14 有问题。我已经为此创建了问题,如果您有任何解决方案,请查看此问题。 【参考方案1】:

这是我对Swift 3.0 的解决方案:

rightBtn.imageInsets = UIEdgeInsets(top: 0, left: -13.0, bottom: 0, right: 13.0) 
self.navigationItem.rightBarButtonItem = rightBtn

【讨论】:

【参考方案2】:

为我工作

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

【讨论】:

【参考方案3】:

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]

【讨论】:

'客户端尝试更改私有视图的布局边距时出错'【参考方案4】:

我也遇到过这个问题。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。当我想让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];

【讨论】:

它在 iOS 7 中确实有效,因为我现在在我的几个项目中使用它......积分系统有所不同,所以你必须照顾它......跨度> 如果你这样做 [NSArray arrayWithObjects:requiredButton,negativeSpacer] 将不起作用。注意顺序。 效果很好,请注意,对于 rightBarButtonItems,如果要更改右边距,则分隔符必须是数组中的第一项 @C_X 对于 iPhone 6,-16 边距似乎不起作用。 -20 似乎是正确的.. 知道如何才能在所有 iPhone 设备上正常工作吗? 不适用于 iOS 13!有谁知道如何在 iOS 13 中实现这一点?【参考方案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
                
            

【讨论】:

这个方法调用延迟 这是执行此操作的准确解决方案,负空间在 iOS 11 中无法使用【参考方案6】:

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) 

【讨论】:

【参考方案7】:

斯威夫特 3:

let negativeSpacer:UIBarButtonItem = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.fixedSpace, target: nil, action: nil)
        negativeSpacer.width = -10
self.navigationItem.leftBarButtonItems = [negativeSpacer, yourBarButtonItem]

【讨论】:

【参考方案8】:

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)

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)

Swift 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)

【讨论】:

【参考方案9】:

你可以这样做

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 */]

【讨论】:

【参考方案10】:

为了修复这个错误,你必须继承UIButton,这样你就可以覆盖alignmentRectInsets。根据我的测试,您需要返回一个UIEdgeInsets,其右偏移量为正值,左偏移量为正值,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

【讨论】:

感谢您的回答。虽然这是一个很好的解决方案,但我更喜欢@C_X 答案,因为现在我正试图避免子类化.. 这导致我在 iOS 6 中的动画期间按钮发生了一些奇怪的移动,它们会从错误的位置开始并在动画完成后移动以匹配插图。 我不会感到惊讶。上面的代码只需要为 iOS 7 构建一个 iOS 6 风格的布局。 快速修复,干得好。但是对于 iOS 9,您需要返回未设置的插图:【参考方案11】:

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];

【讨论】:

【参考方案12】:

在smek's lead 之后,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

然后为了在全局范围内获得它,我有一个薄的 UIViewController 子类,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(一次在 INFViewController 中,然后在类别中),我将其留在类别中,以防我想在项目中的任何地方一次性使用它。

【讨论】:

【参考方案13】:

根据@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];[self.navigationItem addRightBarButtonItem:rightBarButtonItem];

我也尝试子类化 UIButton 并覆盖 -alignmentRectInsets 但这给了我视图之间的转换问题。

【讨论】:

【参考方案14】:

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。

【讨论】:

以上是关于如何在 UINavigationBar [iOS 7] 中编辑左、右 UIBarButtonItem 的空白的主要内容,如果未能解决你的问题,请参考以下文章

在 ios 7 中如何增加 UINavigationbar 的大小

如何在 iOS7 中设置 UINavigationBar? [复制]

如何在IOS 11中为新的大型条设置渐变颜色的UINavigationbar?

如何在 iOS 8 中将 UIVisualEffectView 添加到 UINavigationBar?

如何在 iOS 7 中将 UINavigationBar 高度的高度从 64 点更改为 44 点?

如何在 UINavigationBar [iOS 7] 中编辑左、右 UIBarButtonItem 的空白