見過很多項目，設(shè)置不同導(dǎo)航欄，有隱藏與顯示設(shè)置的，每個頁面有畫頁將要出現(xiàn)，離開畫頁處理導(dǎo)航欄圖片文字顏色的。
工作年限，加班時間不會使你技術(shù)進步，只會讓你習慣垃圾代碼的寫法，記住垃圾代碼，抄來抄去垃圾代碼，不愿在改動垃圾代碼，多么可悲的大神啊

用到第三方 FDFullscreenPopGesture，思路，設(shè)置一個全局的導(dǎo)航欄背景或者圖片，title baritem顏色，不一樣的背景title一行隱藏全局的導(dǎo)航欄，在自己頁面寫個view模擬導(dǎo)航。
實際項目運用，顯示與隱藏各種切換未出任何異常。

比如有個CKKShareVC需要特別的導(dǎo)航欄。操作流程
一、當前頁面處理

- (void)viewDidLoad {
    [super viewDidLoad];
    
    self.fd_prefersNavigationBarHidden = YES;
}

二、基類導(dǎo)航處理

#pragma  mark - life cycle

+ (void)initialize {

    [[UINavigationBar appearance] setTranslucent:NO];
    NSDictionary *titleAttributeDict = @{NSForegroundColorAttributeName:[UIColor whiteColor],
                                         NSFontAttributeName:[UIFont systemFontOfSize:18.0]};
    [[UINavigationBar appearance] setTitleTextAttributes:titleAttributeDict];
    
    [[UINavigationBar appearance] setBackgroundImage:[UIImage imageNamed:@"Main001"]
                                      forBarPosition:UIBarPositionAny
                                          barMetrics:UIBarMetricsDefault];
    [[UINavigationBar appearance] setShadowImage:[[UIImage alloc] init]];
    [[UINavigationBar appearance] setTintColor:[UIColor whiteColor]];
    
    // UIBarButtonItem
    UIBarButtonItem *item=[UIBarButtonItem appearance];
    item.tintColor = [UIColor whiteColor];
    
    NSDictionary *itemAttributeDict= @{NSFontAttributeName:[UIFont systemFontOfSize:15],
                                       NSForegroundColorAttributeName : [UIColor whiteColor]};
    [item setTitleTextAttributes:itemAttributeDict forState:UIControlStateNormal];
    
    // backItem 這里設(shè)置全局返回按鈕，不夠靈活，美工給的圖不到位的話，很難調(diào)整
    //        UIImage *originImage = [UIImage imageNamed:@"navback"];
    //        UIEdgeInsets insets = UIEdgeInsetsMake(0.0f, -10.0f, 0.0f, -10.0f);
    //        UIColor *fillColor = [UIColor clearColor];
    //        UIImage *backButtonImage = [originImage imageByInsetEdge:insets withColor:fillColor];
    //        [item setBackButtonBackgroundImage:[originImage resizableImageWithCapInsets:UIEdgeInsetsMake(0, 18, 0, 0) ]
    //                                  forState:UIControlStateNormal
    //                                barMetrics:UIBarMetricsDefault];
    
    
    //    UIOffset minOffset =
    //    UIOffsetMake(NSIntegerMin, NSIntegerMin);
    //    [item setBackButtonTitlePositionAdjustment:minOffset
    //                                 forBarMetrics:UIBarMetricsDefault];
    
}
#pragma mark - view life cycle
- (void)viewDidLoad {
    [super viewDidLoad];
    
    self.view.backgroundColor = [UIColor  whiteColor];
    self.delegate = self;
}
// 實現(xiàn)代理
#pragma mark - Private Methods
#pragma mark -
#pragma mark Whether need Navigation Bar Hidden
- (BOOL) needHiddenBarInViewController:(UIViewController *)viewController {
    
    BOOL needHideNaivgaionBar = NO;
    /// 這里設(shè)置CKKShareVC要隱藏狀態(tài)欄
    if ([viewController isKindOfClass: NSClassFromString(@"CKKShareVC")]) {
        
        needHideNaivgaionBar = YES;
    }
    
    return needHideNaivgaionBar;
}
#pragma mark - UINaivgationController Delegate
#pragma mark -
#pragma mark Will Show ViewController
- (void)navigationController:(UINavigationController *)navigationController willShowViewController:(UIViewController *)viewController animated:(BOOL)animated {
    
    // 在 NavigationController 的這個代理方法中, 設(shè)置導(dǎo)航欄的隱藏和顯示
    [self setNavigationBarHidden: [self needHiddenBarInViewController: viewController]
                        animated: animated];
}