ios - 透明的 UINavigationBar

Question

我是 ios 的新手，我找到了使 UINavigationBar 透明的解决方案。我可以把这段代码放在项目文件的什么地方

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

因此它被应用到我使用导航 Controller 的整个项目中。

Answer 1

将此代码放入 rootViewController 的 viewDidLoad 函数中:

objective-C :

[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()
    }

swift 3:

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

这肯定有效! Transparent UINavigationBar .