对齐 UIToolBar 项目

发布于 2024-07-14 13:22:10 字数 540 浏览 9 评论 0原文

我创建了三个 UIBarButtonItem ，如下所示。它们向左对齐，我想居中对齐，这样右侧就没有间隙。我在 UIToolBar 上没有看到对齐属性。还有其他方法可以实现此目的吗？

//create some buttons
UIBarButtonItem *aboutButton = [[UIBarButtonItem alloc] initWithTitle:@"About" style:UIBarButtonItemStyleBordered target:self action:@selector(showAbout:)];
[toolbar setItems:[NSArray arrayWithObjects:settingsButton,deleteButton,aboutButton,nil]];
//Add the toolbar as a subview to the navigation controller.
[self.navigationController.view addSubview:toolbar];

原文

I have three UIBarButtonItem created as below. They align left and I'd like to align center so there isn't a gap on the right side. I don't see an align property on UIToolBar. Is there another way to accomplish this?

//create some buttons
UIBarButtonItem *aboutButton = [[UIBarButtonItem alloc] initWithTitle:@"About" style:UIBarButtonItemStyleBordered target:self action:@selector(showAbout:)];
[toolbar setItems:[NSArray arrayWithObjects:settingsButton,deleteButton,aboutButton,nil]];
//Add the toolbar as a subview to the navigation controller.
[self.navigationController.view addSubview:toolbar];

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南街九尾狐 2024-07-21 13:22:10

将两个 UIBarButtonSystemItemFlexibleSpace 项目添加到工具栏，分别位于项目的左侧和右侧

UIBarButtonItem *flexibleSpace = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];
[toolbar setItems:[NSArray arrayWithObjects:flexibleSpace, settingsButton,deleteButton,aboutButton, flexibleSpace, nil]];

添加这些项目就像添加任何其他工具栏项目一样，将在这两个项目之间均匀分配空间。

Add two UIBarButtonSystemItemFlexibleSpace items to your toolbar, to the left and right of your items

UIBarButtonItem *flexibleSpace = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];
[toolbar setItems:[NSArray arrayWithObjects:flexibleSpace, settingsButton,deleteButton,aboutButton, flexibleSpace, nil]];

Adding these as you would any other toolbar items will distribute space evenly between the two of them.

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丘比特射中我 2024-07-21 13:22:10

这也可以直接从故事板完成。

只需拖放工具栏中的项目，并将其中一些项目变成灵活或固定空间即可获得所需的效果。请参阅下面的两个示例。

均匀间隔

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安静 2024-07-21 13:22:10

在 Xamarin iOS 中

右对齐：

yourBar.SetItems(new [] { new UIBarButtonItem(UIBarButtonSystemItem.FlexibleSpace), yourButton }, false);

居中对齐：

var flexibleSpace = new UIBarButtonItem(UIBarButtonSystemItem.FlexibleSpace);
yourBar.SetItems(new [] { flexibleSpace, yourButton, flexibleSpace}, false);

In Xamarin iOS

Right aligned:

yourBar.SetItems(new [] { new UIBarButtonItem(UIBarButtonSystemItem.FlexibleSpace), yourButton }, false);

Center Aligned:

var flexibleSpace = new UIBarButtonItem(UIBarButtonSystemItem.FlexibleSpace);
yourBar.SetItems(new [] { flexibleSpace, yourButton, flexibleSpace}, false);

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红尘作伴 2024-07-21 13:22:10

Swift 版本：

    let toolbar = UIToolbar(frame: CGRect(x: 0, y: 0, width: viewController.view.frame.size.width, height: 35.0))
    let flexibleSpace = UIBarButtonItem(barButtonSystemItem: UIBarButtonItem.SystemItem.flexibleSpace, target: viewController, action: nil)
    let button1 = UIBarButtonItem(title: "A", style: UIBarButtonItem.Style.Plain, target: viewController, action: foo)
    let button2 = UIBarButtonItem(title: "B", style: UIBarButtonItem.Style.Plain, target: viewController, action: bar)
    let button3 = UIBarButtonItem(title: "C", style: UIBarButtonItem.Style.Plain, target: viewController, action: blah)
    toolbar.items = [button1, flexibleSpace, button2, flexibleSpace, button3]

Swift version:

    let toolbar = UIToolbar(frame: CGRect(x: 0, y: 0, width: viewController.view.frame.size.width, height: 35.0))
    let flexibleSpace = UIBarButtonItem(barButtonSystemItem: UIBarButtonItem.SystemItem.flexibleSpace, target: viewController, action: nil)
    let button1 = UIBarButtonItem(title: "A", style: UIBarButtonItem.Style.Plain, target: viewController, action: foo)
    let button2 = UIBarButtonItem(title: "B", style: UIBarButtonItem.Style.Plain, target: viewController, action: bar)
    let button3 = UIBarButtonItem(title: "C", style: UIBarButtonItem.Style.Plain, target: viewController, action: blah)
    toolbar.items = [button1, flexibleSpace, button2, flexibleSpace, button3]

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