iOS导航栏的标题颜色默认是白色。有没有办法换一种颜色?
我知道navigationItem。使用图像的titleView方法。由于我的设计技能有限,我没有得到标准的光泽,我更喜欢改变文字的颜色。
任何见解都将非常感激。
iOS导航栏的标题颜色默认是白色。有没有办法换一种颜色?
我知道navigationItem。使用图像的titleView方法。由于我的设计技能有限,我没有得到标准的光泽,我更喜欢改变文字的颜色。
任何见解都将非常感激。
当前回答
在任何视图控制器viewDidLoad或viewWillAppear方法中使用下面的代码。
- (void)viewDidLoad
{
[super viewDidLoad];
//I am using UIColor yellowColor for an example but you can use whatever color you like
self.navigationController.navigationBar.titleTextAttributes = @{NSForegroundColorAttributeName: [UIColor yellowColor]};
//change the title here to whatever you like
self.title = @"Home";
// Do any additional setup after loading the view.
}
其他回答
如果你试图改变一个页面的颜色,tewha的解决方案效果很好,但我希望能够改变每个页面的颜色。我做了一些小的修改,使它可以工作在UINavigationController上的所有页面
NavigationDelegate.h
//This will change the color of the navigation bar
#import <Foundation/Foundation.h>
@interface NavigationDelegate : NSObject<UINavigationControllerDelegate> {
}
@end
NavigationDelegate.m
#import "NavigationDelegate.h"
@implementation NavigationDelegate
- (void)navigationController:(UINavigationController *)navigationController
willShowViewController:(UIViewController *)viewController animated:(BOOL)animated{
CGRect frame = CGRectMake(0, 0, 200, 44);//TODO: Can we get the size of the text?
UILabel* label = [[[UILabel alloc] initWithFrame:frame] autorelease];
label.backgroundColor = [UIColor clearColor];
label.font = [UIFont boldSystemFontOfSize:20.0];
label.shadowColor = [UIColor colorWithWhite:0.0 alpha:0.5];
label.textAlignment = UITextAlignmentCenter;
label.textColor = [UIColor yellowColor];
//The two lines below are the only ones that have changed
label.text=viewController.title;
viewController.navigationItem.titleView = label;
}
@end
你应该调用[label sizeToFit];设置文本后,防止奇怪偏移时,当其他按钮占据导航栏时,标签自动在标题视图中重新定位。
可以在appdelegate文件中使用此方法,并可以在每个视图中使用
+(UILabel *) navigationTitleLable:(NSString *)title
{
CGRect frame = CGRectMake(0, 0, 165, 44);
UILabel *label = [[[UILabel alloc] initWithFrame:frame] autorelease];
label.backgroundColor = [UIColor clearColor];
label.font = NAVIGATION_TITLE_LABLE_SIZE;
label.shadowColor = [UIColor whiteColor];
label.numberOfLines = 2;
label.lineBreakMode = UILineBreakModeTailTruncation;
label.textAlignment = UITextAlignmentCenter;
[label setShadowOffset:CGSizeMake(0,1)];
label.textColor = [UIColor colorWithRed:51/255.0 green:51/255.0 blue:51/255.0 alpha:1.0];
//label.text = NSLocalizedString(title, @"");
return label;
}
self.navigationItem.title=@"Extras";
[self.navigationController.navigationBar setTitleTextAttributes: [NSDictionary dictionaryWithObjectsAndKeys:[UIFont fontWithName:@"HelveticaNeue" size:21], NSFontAttributeName,[UIColor whiteColor],UITextAttributeTextColor,nil]];
像这样使用定向支持
UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0,0,320,40)];
[view setBackgroundColor:[UIColor clearColor]];
[view setAutoresizingMask:UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight ];
UILabel *nameLabel = [[UILabel alloc] init];
[nameLabel setFrame:CGRectMake(0, 0, 320, 40)];
[nameLabel setBackgroundColor:[UIColor clearColor]];
[nameLabel setAutoresizingMask:UIViewAutoresizingFlexibleTopMargin | UIViewAutoresizingFlexibleBottomMargin |UIViewAutoresizingFlexibleRightMargin | UIViewAutoresizingFlexibleLeftMargin];
[nameLabel setTextColor:[UIColor whiteColor]];
[nameLabel setFont:[UIFont boldSystemFontOfSize:17]];
[nameLabel setText:titleString];
[nameLabel setTextAlignment:UITextAlignmentCenter];
[view addSubview:nameLabel];
[nameLabel release];
self.navigationItem.titleView = view;
[view release];