頁面滑動返回和點擊返回按鈕動做實現；

- (void)configNavbar

{

  UIViewController *vc =  self.navigationController.viewControllers[0];

    

    if (![vc isEqual:self]) {

        self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:self.backButton];//自定義返回按鈕

    }

    

    //    // 獲取系統自帶滑動手勢的target對象

    //    id target = self.navigationController.interactivePopGestureRecognizer.delegate;

    //    // 建立全屏滑動手勢，調用系統自帶滑動手勢的target的action方法

    //    UIPanGestureRecognizer *pan = [[UIPanGestureRecognizer alloc] initWithTarget:target action:@selector(handleNavigationTransition:)];

    //    // 設置手勢代理，攔截手勢觸發

    //    pan.delegate = self;

    //    // 給導航控制器的view添加全屏滑動手勢

    //    [self.view addGestureRecognizer:pan];

    //    // 禁止使用系統自帶的滑動手勢

    //    self.navigationController.interactivePopGestureRecognizer.enabled = NO;

    

    

    [self.navigationController.navigationBar setTitleTextAttributes:

     @{NSFontAttributeName:kFont_System_17,

       NSForegroundColorAttributeName:kColor_ThemeNavText}];

    

    self.navigationController.navigationBar.barTintColor = kColor_ThemeNavBG;//設置導航欄背景顏色

    }