Question

有没有办法在ViewDidLoad或全局某种程度上实现以下代码的导航栏样式，而不是粘贴在每个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扩展所有控制器。

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

@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

现在您可以创建视图控制器并从BaseViewController扩展它，如果是UIViewController。

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导航整个应用程序的样式

1 个答案: