UIToolbar UIBarButtonItem 对齐问题

发布于 2024-08-30 22:05:00 字数 376 浏览 9 评论 0原文

我需要创建一个具有两个 UIBarButtonItems 的 UIToolbar。第一个按钮必须居中，第二个按钮必须右对齐。

我理解并使用灵活间距，当我需要平衡 UIToolbar 上的按钮时，它非常有用，但只有两个按钮，我似乎无法将中间按钮完美居中。我什至已经初始化了 view.toolbarItems 数组

NSArray *items = [[NSArray alloc] initWithObjects:fixed, flex, center_button, flex, right_button, nil];

并设置了fixed.width = right_button.width ...但是，center_button 从来没有完全居中。

原文

I need to create a UIToolbar that has two UIBarButtonItems. The 1st button must be centered and the 2nd item must be right aligned.

I understand and use Flexible spacing and it works great when I need to balance buttons across the UIToolbar, but with only two buttons, I can't seem to perfectly center the middle button. I've even initialized the view.toolbarItems array with

NSArray *items = [[NSArray alloc] initWithObjects:fixed, flex, center_button, flex, right_button, nil];

and set fixed.width = right_button.width ... but still, the center_button is never perfectly centered.

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似狗非友 2024-09-06 22:05:00

我最近遇到了同样的问题，并通过创建一种假的 UIBarButtonItem 解决了它。正确对齐的关键是将左右栏按钮的 possibleTitles 属性设置为相同的值，例如：

[right_button setPossibleTitles:[NSSet setWithObject:@"Abc"]];

// Create this fake (plain) button item on the left, to correct the alignment.
UIBarButtonItem *fake = [[[UIBarButtonItem alloc] initWithTitle:@"" style:UIBarButtonItemStylePlain target:nil action:nil] autorelease];
[fake setEnabled:NO];
[fake setPossibleTitles:right_button.possibleTitles];

// The array for your toolbar items
NSArray *items = [[NSArray alloc] initWithObjects:fake, flex, center_button, flex, right_button, nil];

迟到的答案...我希望这仍然有帮助。

I had the same problem recently and solved it by creating a sort of fake UIBarButtonItem. The key in getting the alignment right was to set the possibleTitles property of both left and right bar buttons to the same value, for example:

[right_button setPossibleTitles:[NSSet setWithObject:@"Abc"]];

// Create this fake (plain) button item on the left, to correct the alignment.
UIBarButtonItem *fake = [[[UIBarButtonItem alloc] initWithTitle:@"" style:UIBarButtonItemStylePlain target:nil action:nil] autorelease];
[fake setEnabled:NO];
[fake setPossibleTitles:right_button.possibleTitles];

// The array for your toolbar items
NSArray *items = [[NSArray alloc] initWithObjects:fake, flex, center_button, flex, right_button, nil];

Late answer... I hope this can still help.

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