iOS中用户未登录状态下点击下方tabBar触发登录

最新推荐文章于 2022-12-18 14:14:03 发布

原创最新推荐文章于 2022-12-18 14:14:03 发布 · 4k 阅读

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本文介绍了在iOS应用中，当用户未登录时点击TabBar会触发登录界面的实现方法。通过自定义`CustomTabBarController`，监听`UITabBarControllerDelegate`的`shouldSelectViewController`方法，检查用户登录状态。如果用户未登录且尝试进入特定页面（如社区或朋友），则弹出登录界面。同时展示了设置TabBarItem图片和文字的代码片段。

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前提公司没有设计访客视图界面

效果图片

接下来直接上代码

@interface CustomTabBarController : UITabBarController<UITabBarDelegate,UITabBarControllerDelegate>

self.delegate = self;

//重点在这里

#pragma mark - 添加tabbaritem

- (void)addTabBarItems{

UITabBar *bar = self.tabBar;

UITabBarItem *homeItem = bar.items[0];

[self setTabBarItem:homeItem image:@"sy_013" selectedImage:@"sy_017" title:@"摩点" tag:1];

UITabBarItem *dynamicItem1 = bar.items[1];

[self setTabBarItem:dynamicItem1 image:@"MD" selectedImage:@"MD2" title:@"项目" tag:2];

UITabBarItem *dynamicItem = bar.items[2];

[self setTabBarItem:dynamicItem image:@"moxi" selectedImage:@"moxi2" title:@"社区" tag:3];

UITabBarItem *inviteFriendsItem = bar.items[3];

[self setTabBarItem:inviteFriendsItem image:@"sy_015" selectedImage:@"sy_019" title:@"朋友" tag:4];

UITabBarItem *personalCenterItem = bar.items[4];

[self setTabBarItem:personalCenterItem image:@"sy_016" selectedImage:@"sy_020" title:@"我的" tag:5];

}

- (void)setTabBarItem:(UITabBarItem *)item image:(NSString *)image selectedImage:(NSString *)selected title:(NSString *)title tag:(NSInteger)tag{

item.image = [[UIImage imageNamed:image] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];

item.selectedImage = [[UIImage imageNamed:selected] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];

item.title = title;

item.tag = tag;

[item setTitleTextAttributes:@{NSForegroundColorAttributeName:[UIColor blackColor],NSFontAttributeName:[UIFont systemFontOfSize:12]} forState:UIControlStateNormal];