如何創建自定義導航欄，如BestBuy App？

Question

我想製作一個自定義導航欄，就像在BestBuy App中一樣，或者像下面給出的屏幕截圖所示。

我想這種類型的導航是總是在每個頂部和每一個的viewController。

如果有人能告訴我的程序或任何形式的幫助，將不勝感激。謝謝。

Answer 1

編寫一個UINavigationBar的子類，在其中進行自定義繪圖並根據需要添加子視圖。

然後告訴你navigationController使用initWithNavigationBarClass:toolBarClass:

例如INITING它使用該類

@interface MyBar : UINavigationBar 
@end 

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

---

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

代替initWithRootViewController

---

樣品

- (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; 
} 

Answer 2

的導航欄可以採取三種視圖，在每邊兩個按鈕左，右，你也可以添加爲標題的看法,,

//this will set a background image to your navigation bar. 
[[self.navigationController navigationBar] setBackgroundImage:[UIImage imageNamed:@"top-bar.png"] forBarMetrics:UIBarMetricsDefault]; 

UIButton *leftButton = [UIButton buttonWithType:UIButtonTypeCustom]; 
[leftButton setBackgroundImage:[UIImage imageNamed:@"backBtn.png"] forState:UIControlStateNormal]; 
leftButton.frame = CGRectMake(0, 0, 66, 30); 
[leftButton addTarget:self action:@selector(navBack) forControlEvents:UIControlEventTouchUpInside]; 
self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:leftButton]; 

UIImage *image=[UIImage imageNamed:@"add-btn.png"]; 
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom]; 
button.bounds = CGRectMake(0, 0, image.size.width, image.size.height); 
[button setBackgroundImage:image forState:UIControlStateNormal]; 
[button addTarget:self action:@selector(doneAct) forControlEvents:UIControlEventTouchUpInside]; 
self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:button]; 

，並添加搜索欄

self.navigationItem.titleView = mySearchbarView;