外观代理 - setShadowImage替代iOS 5？ [英] Appearance proxy - setShadowImage alternative for iOS 5?

问题描述

你好，我使用这个代码来设置我的navbar的阴影图像：

Hello I'm using this code to set the shadow image of my navbar:

if ([self.navigationController.navigationBar respondsToSelector:@selector(shadowImage)]) {

    [[UINavigationBar appearance] setShadowImage:[UIImage imageNamed:@"nav-bar-shadow"]];

    [[UIToolbar appearance] setShadowImage:[UIImage imageNamed:@"tool-bar-shadow"]  forToolbarPosition:UIToolbarPositionAny];
}

但是看起来这只是iOS 6肯定 - 我找不到这方面的文档）。它在iOS 5上不起作用。

However it seems this is iOS 6 only (though I can't say for sure - I can't find documentation about this anywhere). It doesn't work on iOS 5.

有没有其他选择 - 在navbar下全局设置图像？

Is there some kind of alternative - globally setting an image under the navbar? I thought of custom UIView, but how to do this globally?

推荐答案

您可以：

1. 添加一个包含阴影图像的子视图到 viewController.view


2. 将包含阴影图像的子视图添加到 [[UIApplication sharedApplication] keyWindow] ，这将在您的窗口上全局添加图像。但是，它可以得到一点丑陋。


3. 您可以子类化 UINavigationBar ，在子视图中做一些魔术，然后通过 [[UINavigationController alloc] initWithNavigationBarClass：[YourNavBarSubclass class] toolbarClass：[UIToolbar class]]

1. Add a subview containing the shadow image to your viewController.view
2. Add a subview containing the shadow image to your [[UIApplication sharedApplication] keyWindow], which will add the image globally on your window. However, it can get a little bit ugly e.g. when displaying a modal view controller.
3. You can subclass UINavigationBar, do some magic with subviews in there and then initialize your navigationController via [[UINavigationController alloc] initWithNavigationBarClass:[YourNavBarSubclass class] toolbarClass:[UIToolbar class]]

这篇关于外观代理 - setShadowImage替代iOS 5？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！