如何从AppDelegate更改UINavigationBar背景颜色 [英] How to change UINavigationBar background color from the AppDelegate

问题描述

我知道如何通过执行

更改 UINavigationBar 背景图片> [[UINavigationBar外观] setBackgroundImage：[UIImage imageNamed：@nabbar] forBarMetrics：UIBarMetricsDefault];


我知道如何在每个 / code> .....现在我想从应用程式代表中变更背景颜色而不使用图片为纯色。我不想每次从每个视图设置它，我不想写一个 CGRect 。

我尝试了 [[UINavigationBar外观] setBackgroundColor：[UIColor colorWithRed：33 / 255.0 green：34 / 255.0 blue：36 / 255.0 alpha：1.0]]; 工作，我无法找到一个代码在任何地方工作在应用程序委派。

任何人都可以指出正确的方向？

解决方案

您可以使用 [[UINavigationBar外观] setTintColor：myColor];

c $ c> [[UINavigationBar appearance] setBarTintColor：myColor]; 以及 [[UINavigationBar appearance] setTranslucent：NO]

  [[UINavigationBar appearance] setBarTintColor：myColor]; 
 [[UINavigationBar appearance] setTranslucent：NO]; 
  

I know how to change the UINavigationBar background image by doing

[[UINavigationBar appearance] setBackgroundImage:[UIImage imageNamed:@"nabbar"] forBarMetrics:UIBarMetricsDefault];

and I know how to set the bar to different colors within each Views..... Now I want to change the background color without using an image to a solid color from the app delegate. I do not want to set it each time from each view and I do not want to write a CGRect.

I tried [[UINavigationBar appearance] setBackgroundColor:[UIColor colorWithRed:33/255.0 green:34/255.0 blue:36/255.0 alpha:1.0]]; but I doesn't work and I cant find a code anywhere that works in the app delegate.

Could anyone please point me in the right direction?

解决方案

You can use [[UINavigationBar appearance] setTintColor:myColor];

Since iOS 7 you need to set [[UINavigationBar appearance] setBarTintColor:myColor]; and also [[UINavigationBar appearance] setTranslucent:NO].

[[UINavigationBar appearance] setBarTintColor:myColor];
[[UINavigationBar appearance] setTranslucent:NO];

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