NAvigation栏不出现

Question

我想要使我的Navigationbar清晰的颜色。所以我在我的ViewDidLoad里试着这样做

self.navigationController.navigationBar.hidden=NO;

[self.navigationController.navigationBar setBackgroundImage:[UIImage new] forBarMetrics:UIBarMetricsDefault];
self.navigationController.navigationBar.shadowImage=[UIImage new];

self.navigationController.navigationBar.translucent=YES;

self.navigationController.navigationBar.topItem.titleView.tintColor=[UIColor blackColor];
self.navigationController.navigationBar.topItem.title=[lan GetConvertedLanguageString:@"My Profile"];
self.navigationController.navigationBar.titleTextAttributes = [NSDictionary dictionaryWithObject:[UIColor whiteColor] forKey:NSForegroundColorAttributeName];



self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"backarrow"] style:UIBarButtonItemStylePlain target:self action:@selector(revealToggle :)];
[self.navigationController navigationBar].tintColor = [UIColor whiteColor];

但在我的视图控制器里什么都看不见。这个密码有什么问题吗？请帮帮我。谢谢

Answer 1

屏幕截图

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代码

[self.navigationController.navigationBar setBackgroundImage:[UIImage new] forBarMetrics:UIBarMetricsDefault];
self.navigationController.navigationBar.shadowImage=[UIImage new];
self.navigationItem.title = @"1234";
self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"Left" style:UIBarButtonItemStylePlain target:nil action:nil];
self.navigationController.navigationBar.titleTextAttributes = [NSDictionary dictionaryWithObject:[UIColor whiteColor] forKey:NSForegroundColorAttributeName]; 
[self.navigationController navigationBar].tintColor = [UIColor whiteColor];

所以，我想，你的背景是白色的，所以你看不到白色的文本。

备注

navigationBar.titleTextAttributes

显示条形图标题文本的属性。

navigationBar.tintColor

适用于导航项和条形按钮项的色调颜色。