UIBarButtonItem Offset？ [英] UIBarButtonItem Offset?

问题描述

我试图在我的应用程序中偏移UIBarButtonItems，我需要它们稍微偏移，因为我用于导航栏的图像所以它们都正确排列。我设法这样做：

I am trying to offset the UIBarButtonItems in my app, I need them slightly offset due to the image I use for my navigation bar so it all lines up correctly. I have managed to do this like so:

[[UINavigationBar appearance] setTitleVerticalPositionAdjustment:-3 forBarMetrics:UIBarMetricsDefault];
    [[UIBarButtonItem appearance] setBackgroundVerticalPositionAdjustment:-3 forBarMetrics:UIBarMetricsDefault];
    [[UIBarButtonItem appearance] setBackButtonBackgroundVerticalPositionAdjustment:-3 forBarMetrics:UIBarMetricsDefault];

我有两个问题。

1. 这会停止按钮具有任何突出显示的状态，它们可以正常工作，但不会明显按下。不管怎么说呢？

1. This stops the buttons have any highlighted state, they function but are no linger visibly pressed down. Anyway around this?

更重要的是，这可以很好地在我的导航栏中将我的按钮向上推，但它会在我的工具栏中将它们推到底部在我需要相反的屏幕，实际上将它们向下推了一下。我该怎么办呢？

More importantly, this works well pushing my buttons upwards in my nav bar, but it pushes them up in my toolbars as well at the bottom of the screen where I need the opposite, actually push them down a little. How can I handle this?

任何帮助总是很感激，谢谢。

Any help always appreciated, thanks.

推荐答案

原来我找到了解决方案！您可以使用以下内容根据对象的视图调整这些外观属性：

Turns out I have found the solution! You can adjust these appearence attributes depending on what view your object is in using the following:

appearanceWhenContainedIn:

而不是标准

appearance

所以我已经实现了我的需求，根据按钮是否调整来上下调整在导航栏或工具栏中：

So I have implemented my needs like so, adjusting up and down depending on if the button is in a nav bar or toolbar:

[[UIBarButtonItem appearanceWhenContainedIn:[UINavigationBar class], nil] setBackgroundVerticalPositionAdjustment:-3 forBarMetrics:UIBarMetricsDefault];
    [[UIBarButtonItem appearanceWhenContainedIn:[UINavigationBar class], nil] setBackButtonBackgroundVerticalPositionAdjustment:-3 forBarMetrics:UIBarMetricsDefault];

    [[UIBarButtonItem appearanceWhenContainedIn:[UIToolbar class], nil] setBackgroundVerticalPositionAdjustment:3 forBarMetrics:UIBarMetricsDefault];
    [[UIBarButtonItem appearanceWhenContainedIn:[UIToolbar class], nil] setBackButtonBackgroundVerticalPositionAdjustment:3 forBarMetrics:UIBarMetricsDefault];

这篇关于UIBarButtonItem Offset？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！