如何在iOS 7中创建完全透明的导航栏 [英] How to make completely transparent navigation bar in iOS 7

问题描述

我想在我的应用程序中的UINavigationBar是完全透明的，并与直接在它下面的viewcontroller齐平。然而，我可以找到的唯一的代码，它使透明，但不透明。我知道这可以在iOS 7中完成，因为它用于笔记应用程序。我的问题是，他们用来做什么代码？

I want the UINavigationBar in my app to be completely transparent and flush with the viewcontroller directly under it. However, the only code I could find makes it translucent but not transparent. I know this can be done in iOS 7 because it is used in the notes app. My question is, what is the code they used to do it?

推荐答案

从此回答

[self.navigationController.navigationBar setBackgroundImage:[UIImage new]
                     forBarMetrics:UIBarMetricsDefault];
self.navigationController.navigationBar.shadowImage = [UIImage new];
self.navigationController.navigationBar.translucent = YES;
self.navigationController.view.backgroundColor = [UIColor clearColor];
self.navigationController.navigationBar.backgroundColor = [UIColor clearColor];

此外，如Josh在注释中建议的，将bar设置为默认值：

Also, as suggested by Josh in the comments, to put the bar back to default:

[self.navigationController.navigationBar setBackgroundImage:nil
                     forBarMetrics:UIBarMetricsDefault];

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