透明的UINavigationBar

Question

是ios的新手,我发现这个解决方案使UINavigationBar透明化.在我的项目文件中我可以放置此代码

[self.navigationBar setBackgroundImage:[UIImage new]
                     forBarMetrics:UIBarMetricsDefault];
self.navigationBar.shadowImage = [UIImage new];
self.navigationBar.translucent = YES;

因此它应用于我正在使用导航控制器的整个项目中.

Answer 1

输入你viewDidLoad的rootViewController函数这段代码:

Objective-C的:

[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];

Swift 2.x:

if let navigationBar = navigationController?.navigationBar {
        navigationBar.setBackgroundImage(UIImage(), forBarMetrics: .Default)
        navigationBar.shadowImage = UIImage()
        navigationBar.translucent = true
        navigationController?.view.backgroundColor = .clearColor()
    }

斯威夫特3:

if let navigationBar = navigationController?.navigationBar {
        navigationBar.setBackgroundImage(UIImage(), for: .default)
        navigationBar.shadowImage = UIImage()
        navigationBar.isTranslucent = true
        navigationController?.view?.backgroundColor = .clear
    }

这肯定有用!透明的UINavigationBar.