我创建了一个NSObject的CommonMethod子类来自定义UINavigationBar,这里是CommonMethod.h和CommonMethod.m文件
CommonMethod.h
#import <UIKit/UIKit.h>
#import <Foundation/Foundation.h>
@interface CommonMethods : NSObject
+(void)setNavBackButton:(id)viewController;
+(void)setNavBackground:(id)viewController Color:(UIColor *)color;
@end
CommonMethod.h
#import <UIKit/UIKit.h>
#import "CommonMethods.h"
@implementation CommonMethods
+(void)setNavBackground:(id)viewController Color:(UIColor *)color
{
UIViewController *controller = (id)viewController;
controller.navigationController.navigationBar.backgroundColor=[UIColor redColor];
}
@end
现在,当我调用[CommonMethods setNavBackground:self Color:[UIColor redColor];
时,它正在执行该方法,但没有在UI上进行任何更改。任何人都可以赦免我所缺少的东西吗?
编辑:
我也试过controller.navigationController.navigationBar.barTintColor = color;
答案 0 :(得分:1)
您在代码上有轻微的错误
+(void)setNavBackground:(id)viewController Color:(UIColor *)color
{
UIViewController *controller = (id)viewController;
controller.navigationController.navigationBar.barTintColor = color; // Change NavigationBar color to Red
}
这样的调用方法:[CommonMethod setNavBackground:self Color:[UIColor redColor]];