APP开发之UINavigationController设置

来源：互联网发布：淘宝打假怎么赚钱编辑：程序博客网时间：2024/06/07 23:34

前言：
搭建APP的时候少不了设置UITabBarController，UINavigationController；
UITabBarController是为了管理控制器，而UINavigationController是为了统一布局；

本篇介绍导航控制器，主要涉及到以下“控件”的设置

一、UINavigationBar

1、导航控制器的整个背景颜色

self.navigationBar.barTintColor = [UIColor redColor];//设置为红色

2、设置文字颜色和大小

    //    设置UINavigationBar文字属性    UINavigationBar *appearance = [UINavigationBar appearance];    NSMutableDictionary *textAttrs = [NSMutableDictionary dictionary];    textAttrs[NSFontAttributeName] = [UIFont systemFontOfSize:18];    textAttrs[NSForegroundColorAttributeName] = [UIColor whiteColor];    [appearance setTitleTextAttributes:textAttrs];

二、UIBarButtonItem

这里分一般和自定义进行设置：

1、一般情况：（与设置UINavigationBar一样）

UIBarButtonItem *appearance = [UIBarButtonItem appearance];    NSMutableDictionary *textAttrs = [NSMutableDictionary dictionary];    textAttrs[NSForegroundColorAttributeName] = [UIColor whiteColor];    [appearance setTitleTextAttributes:textAttrs forState:UIControlStateNormal];

2、自定义：重写导航控制器的 pushViewController 方法

-(void)pushViewController:(UIViewController *)viewController animated:(BOOL)animated{     if (self.viewControllers.count > 0) {        /** 推出控制器之后隐藏tabBar */        viewController.hidesBottomBarWhenPushed = YES;        viewController.navigationItem.leftBarButtonItem = [UIBarButtonItem barButtonItemWithBg:@"icon_return" title:@"返回" target:self action:@selector(back)];        **这里对BarButtonItem进行自定义**    }          [super pushViewController:viewController animated:YES];  }-(void)back{           [self popViewControllerAnimated:YES];   }

对BarButtonItem进行扩展

+ (UIBarButtonItem *)barButtonItemWithBg:(NSString *)bg title:(NSString *)title target:(id)target action:(SEL)action{    UIButton *button = [[UIButton alloc]init];    [button setImage:[UIImage imageNamed:bg] forState:UIControlStateNormal];    [button setImageEdgeInsets:UIEdgeInsetsMake(0, -30, 0, 0)];    [button setTitle:title forState:UIControlStateNormal];    [button setTitleEdgeInsets:UIEdgeInsetsMake(0, -55, 0, 0)];    [button setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];    button.titleLabel.font = [UIFont systemFontOfSize:14];    button.frame = CGRectMake(0, 0, 60, 44);    [button addTarget:target action:action forControlEvents:UIControlEventTouchUpInside];    return [[UIBarButtonItem alloc] initWithCustomView:button];}

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