xcode 更改 NavigationBar 颜色（背景色）
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Change NavigationBar color (background color)
提问by user869305
I keep reading to change the default color on a navigationbar i just need to update the first method in the appdelegate to this
我一直在阅读以更改导航栏上的默认颜色，我只需要将 appdelegate 中的第一个方法更新为此
self.window.rootViewController.navigationController.navigationBar.tintColor = [UIColor whiteColor];
but it doesn't seem to work, so I tried setting it in the viewDidLoad method of the firstview also:
但它似乎不起作用，所以我也尝试在 firstview 的 viewDidLoad 方法中设置它：
self.parentViewController.navigationController.navigationBar.tintColor = [UIColor whiteColor];
This didn't work either. How can I change this?
这也不起作用。我怎样才能改变这个？
回答by DrummerB
Don't use self.parentViewController, but self:
不要使用self.parentViewController，但是self：
self.navigationController.navigationBar.tintColor = [UIColor whiteColor];
回答by Isuru Jayathissa
When iphone 5 come we have to set both device type. So use this
当 iphone 5 到来时，我们必须设置两种设备类型。所以用这个
if([self.navigationController.navigationBar respondsToSelector:@selector(setBackgroundImage:forBarMetrics:)] ) {
//iOS 5 new UINavigationBar custom background
[self.navigationController.navigationBar setBackgroundImage:[UIImage imageNamed:@"navbg_ForiPhone5_Imagename.png"] forBarMetrics: UIBarMetricsDefault];
} else {
[self.navigationController.navigationBar insertSubview:[[UIImageView alloc] initWithImage:[UIImage imageNamed:@"navbg_ForOtherIphone_Imagename.png"]] atIndex:0];
}
回答by Dalorzo
In IOS7 you can try this:
在IOS7你可以试试这个：
[[UINavigationBar appearance] setBarTintColor:[UIColor redColor]];
You can follow these steps:
您可以按照以下步骤操作：
I created a new UINavigationControllerfor example UIDemoNavControllerresulting in:
我创建了一个新UINavigationController的例如UIDemoNavController导致：
- (void)viewDidLoad{
[[UINavigationBar appearance] setBarTintColor:[UIColor redColor]];
[super viewDidLoad];
}
This is the full demo class:
这是完整的演示类：
#import "UIDemoNavController.h"
@interface UIDemoNavController()
@end
@implementation UIDemoNavController
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {}
return self;
}
- (void)viewDidLoad{
[[UINavigationBar appearance] setBarTintColor:[UIColor redColor]];
[super viewDidLoad];
}
- (void)didReceiveMemoryWarning{
[super didReceiveMemoryWarning];
}
@end
回答by graver
Try self.navigationController.navigationBar.tintColor = [UIColor whiteColor];UIViewControllerclass has a property navigationController, which returns the navigation controller its embedded in no matter how deep, otherwise it returns nil.
Tryself.navigationController.navigationBar.tintColor = [UIColor whiteColor];UIViewController类有一个属性navigationController，它返回嵌入的导航控制器，无论多深，否则返回nil。
