我正在尝试使用以下方法更改 UINavigationController 导航栏的颜色
self.navigationController.navigationBar.tintColor = [UIColor brownColor];
在下面给出的代码中，但它不起作用。
#import "uitextviewAppDelegate.h"
#import "uitextviewViewController.h"
@implementation uitextviewAppDelegate
@synthesize window = _window;
@synthesize viewController = _viewController;
@synthesize navigationController = _navigationController;
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
self.viewController = [[uitextviewViewController alloc] init];
UINavigationController *navigationController=[[UINavigationController alloc] init];
self.navigationController.navigationBar.tintColor = [UIColor brownColor];
[navigationController pushViewController:_viewController animated:YES];
[_window addSubview:navigationController.view];
self.window.rootViewController = self.viewController;
[self.window makeKeyAndVisible];
return YES;
}
谁能告诉我为什么它不改变 UINavigationController 导航栏的颜色。
提前致谢。
看这两行：
UINavigationController *navigationController=[[UINavigationController alloc] init];
self.navigationController.navigationBar.tintColor = [UIColor brownColor];
第一个连接是什么navigationController with self.navigationController?
据我所知，没什么。
你需要分配self.navigationController to navigationController.
就像是：
self.navigationController = navigationController;
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