如何创建像BestBuy App这样的自定义导航栏? [英] How to create Custom Navigation Bar like BestBuy App?

问题描述

我想制作一个自定义的导航栏，就像在BestBuy App中一样，或者在下面给定的屏幕截图中显示.

I want to make a custom navigation bar as like in the BestBuy App or like shown in the below given screenshot.

我希望这种导航类型始终位于每个viewController的顶部.

I want this type of Navigation to be always on the top of each and every viewController.

如果有人可以告诉我该程序或任何形式的帮助，将不胜感激.谢谢.

If anyone can tell me the procedure or any kind of help would be appreciated. Thanks.

推荐答案

编写UINavigationBar的子类，您可以在其中进行自定义绘制并根据需要添加子视图.

write a subclass of UINavigationBar in which you do custom drawing and add subviews as needed.

然后通过使用 initWithNavigationBarClass:toolBarClass:

例如

@interface MyBar : UINavigationBar
@end

@implementation MyBar 
.... //like any UIView
@end

---

UINavigationController *navi = [[UINavigationController alloc] initWithNavigationBarClass:[MyBar class] toolbarClass:nil];

而不是 initWithRootViewController

样品

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) {
    self.mainViewController = [[FDMainViewController alloc] initWithNibName:@"FDMainViewController_iPhone" bundle:nil];
} else {
    self.mainViewController = [[FDMainViewController alloc] initWithNibName:@"FDMainViewController_iPad" bundle:nil];
}

UINavigationController *navi = [[UINavigationController alloc] initWithNavigationBarClass:[UINavigationBar class] toolbarClass:nil];
navi.viewControllers = @[self.mainViewController];
self.window.rootViewController = navi;
[self.window makeKeyAndVisible];
return YES;
}

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