如何在 UINavigationBar [iOS 7] 中编辑左、右 UIBarButtonItem 的空白
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【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];
和 [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】:
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