ios - 整个应用程序的导航样式

Question

有没有一种方法可以在 ViewDidLoad 中或以某种方式在全局范围内为我的导航栏样式实现以下代码，而不是粘贴到每个 VC 中？谢谢。

// Navagation styling
    viewController.title = @"NAV TITLE";
    [viewController.navigationController.navigationBar setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys:[UIFont fontWithName:@"Gibson-Light" size:20.0], NSFontAttributeName, nil]];

    UIBarButtonItem *rightBarButton = [[UIBarButtonItem alloc] initWithTitle:nil
                                                                       style:UIBarButtonItemStylePlain
                                                                      target:viewController
                                                                      action:nil];

    rightBarButton.image = [UIImage imageNamed:@"settings_cog"];
    rightBarButton.tintColor = [UIColor grayColor];

    viewController.navigationItem.rightBarButtonItem = rightBarButton;

Answer 1

您可以创建一个 BaseViewController 并将上面的代码放入其中，并从 BaseViewController 扩展所有 Controller 。

这样做:

创建一个 Objective-C 类 BaseViewController.h 和 .m

在BaseViewController.h中

@interface BaseViewController : UIViewController
{
    NSString *_title;
}

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil title:(NSString *)navTitle;    

@end

在BaseViewController.m中

@implementation BaseViewController

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil title:(NSString *)navTitle
{
    _title = navTitle;
}

- (void)viewDidLoad
{
    self.title = _title;
    [self.navigationController.navigationBar setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys:[UIFont fontWithName:@"Gibson-Light" size:20.0], NSFontAttributeName, nil]];
    UIBarButtonItem *rightBarButton = [[UIBarButtonItem alloc] initWithTitle:nil
                                                                   style:UIBarButtonItemStylePlain
                                                                  target:viewController
                                                                  action:nil];
    rightBarButton.image = [UIImage imageNamed:@"settings_cog"];
    rightBarButton.tintColor = [UIColor grayColor];
    self.navigationItem.rightBarButtonItem = rightBarButton;
}

@end

现在您可以创建 View Controller 并从 BaseViewController 扩展它而不是 UIViewController。

如果您有任何问题，请告诉我。