self.previousClickedTag = tabBarController.selectedIndex;//记录上一次按钮的点击 } 1.3 在UITabBarDelegate代理方法实现UITabBarItem 样式的动态更换 处理选中/未选中的UITabBarItem 样式 通过代理方法didSelectItem修改UITabBarItem的title ,达到选中之后和未选中的title不一样的效果 切换到首页时 NSString * const GYQhomeTabbarSelectedTitle = @"刷新"; - (void)tabBar:(UITabBar *)tabBar didSelectItem:(UITabBarItem }else{ // 切换到其他子Tab时,将首页tab的title刷新改为《首页》 for (UITabBarItem
var rx_delegate: DelegateProxy {} public var rx_text: ControlProperty<String> {} } extension UITabBarItem > {} } extension UITabBar { public var rx_didSelectItem: ControlEvent<UITabBarItem> {} public var rx_willBeginCustomizing: ControlEvent<[UITabBarItem]> {} public var rx_didBeginCustomizing: ControlEvent<[UITabBarItem]> {} public var rx_willEndCustomizing: ControlEvent<(items: [UITabBarItem ], changed: Bool)> {} public var rx_didEndCustomizing: ControlEvent<(items: [UITabBarItem], changed
weakSelf.tabBarController.tabBar.bounds.size.height);//避免视图被TabBar挡住 }]; }]; 3.2 iOS 13适配深色模式【设置UITabBarItem self.tabBar.tintColor = ktabSelectedTextColor; // self.tabBar.unselectedItemTintColor = ; // UITabBarItem *item = [UITabBarItem appearance]; // item.titlePositionAdjustment = UIOffse/tMake(0, -2); // systemFontOfSize:12]} forState:UIControlStateSelected]; } else { // // iOS 13以下 // UITabBarItem *item = [UITabBarItem appearance]; // item.titlePositionAdjustment = UIOffsetMake(0, -2); //
原始图标与原始选中图标,而不是系统自动填充的颜色 // 拿到 TabBar 在拿到想应的item UITabBar *tabBar = _tabBarController.tabBar; UITabBarItem *item0 = [tabBar.items objectAtIndex:0]; UITabBarItem *item1 = [tabBar.items objectAtIndex:1]; UITabBarItem *item2 = [tabBar.items objectAtIndex:2]; UITabBarItem *item3 = [tabBar.items objectAtIndex
@property(nullable,nonatomic,assign) UITabBarItem *selectedItem; - (void)setItems:(nullable NSArray< UITabBarItem *> *)items animated:(BOOL)animated; 设置自定义标签顺序: //调用这个方法会弹出一个类似上面第二张截图的控制器,我们可以交换标签的布局顺序 *)item; //将要开始编辑标签时 - (void)tabBar:(UITabBar *)tabBar willBeginCustomizingItems:(NSArray<UITabBarItem *> *)items changed:(BOOL)changed; 五、再看UITabBarItem 和NavigationItem类似,标签栏上的item也可以自定义,一些方法如下。 //设置标题的位置偏移 @property (nonatomic, readwrite, assign) UIOffset titlePositionAdjustment; 由于UITabBarItem
UITabBarItem自动将图片文字渲染成蓝色 ? 的文字属性 ****/ // 这里对item进行设置,即相当于对所有item进行统一设置 UITabBarItem *item = [UITabBarItem appearance]; appearance UITabBar 中间添加按钮的实现 我们知道中间加号按钮是没有标题的,即使我们将标题设置为空,还有有标题的label站位,所以UITabBarItem是不能实现了,那么我们只能将一个button覆盖在中间这块区域上 方法一:添加站位控制器,我们可以在中间的位置上添加一个空的站位控制器,然后将button覆盖到UITabBar中间,这样做简单方便,但是创建了一个Controller和一个UITabBarItem没有别的用处只是用来站位 中间button覆盖在原有UITabBarItem上 方法二:自定义tabbar重写layoutsubViews方法 为了避免第一种方法产生站位Controller和UITabBarItem,我们自定义一个
; [homePageNav pushViewController:citySelection animated:YES]; } // 设置主页-TabBar UITabBarItem *itemHomePage= [[UITabBarItem alloc] initWithTitle:@"首页" image:[UIImage imageWithImage:[UIImage imageNamed = [[UINavigationController alloc]initWithRootViewController:shoppingCart]; // 设置购物车-TabBar UITabBarItem *itemShoppingCart= [[UITabBarItem alloc] initWithTitle:@"我的购物车" image:[UIImage imageWithImage:[UIImage *itemindividualCenter= [[UITabBarItem alloc] initWithTitle:@"我的幸福家" image:[UIImage imageWithImage:[UIImage
rootViewController: vc4) var nvc5:UINavigationController = LBNvc(rootViewController: vc5) let tabbar1 = UITabBarItem home_tab_home_btn@2x")) , selectedImage: (Public .getImgView("home_tab_home_selected_btn@2x"))) let tabbar2 = UITabBarItem home_tab_saunter_btn@2x")), selectedImage: (Public .getImgView("home_tab_saunter_selected_btn@2x"))) let tabbar3 = UITabBarItem home_tab_branc_btn@2x")), selectedImage: (Public .getImgView("home_tab_branc_selected_btn@2x"))) let tabbar4 = UITabBarItem home_tab_point_btn@2x")), selectedImage: (Public .getImgView("home_tab_point_selected_btn@2x"))) let tabbar5 = UITabBarItem
withRenderingMode(.alwaysOriginal) HomeNC.tabBarItem = UITabBarItem.init(title: "首页", image: withRenderingMode(.alwaysOriginal) CenterNC.tabBarItem = UITabBarItem.init(title: "个人中心", image withRenderingMode(.alwaysOriginal) MoreNC.tabBarItem = UITabBarItem.init(title: "更多", image:
UINavigationController(rootViewController: vc02) // 设置标题,未选中状态图标,选中状态图标 let barItem01 = UITabBarItem withRenderingMode(.alwaysOriginal)) vc01.tabBarItem = barItem01 let barItem02 = UITabBarItem( tabbarController.tabBar.selectionIndicatorImage = UIImage(named: "") // 设置字体颜色 UITabBarItem.appearance setTitleTextAttributes([NSAttributedStringKey.foregroundColor: UIColor.gray], for: UIControlState.normal) UITabBarItem.appearance NSAttributedStringKey.foregroundColor: UIColor.green], for: UIControlState.selected) // 设置字体大小 UITabBarItem.appearance
https://blog.csdn.net/u010105969/article/details/51089986 + (void)initialize { UITabBarItem * item = [UITabBarItem appearanceWhenContainedIn:self, nil]; NSMutableDictionary * dic = [NSMutableDictionary initialize这个方法,在初始化的时候会调用,但只调用一次(在使用这个类或者子类的时候调用) 其次说一下appearanceWhenContainedIn:这个方法,它能够获取全局的外观,例如在这里,就获取了UITabBarItem
UIBarMetricsDefault];[[UINavigationBar appearance] setShadowImage:[UIImage new]]; 1.4 改变 TabBar 的字体颜色 [UITabBarItem.appearance setTitleTextAttributes: @{ NSForegroundColorAttributeName : [UIColor blueColor] } forState:UIControlStateNormal]; [UITabBarItem.appearance
vc.tabBarItem.selectedImage = [UIImage imageNamed:selectedImage]; [self addChildViewController:vc]; } @end 三 UITabBarItem NSAttributedString.h中可以找到) - 比如NSFontAttributeName\NSForegroundColorAttributeName - 规律:NSXXXAttributeName 通过UITabBarItem 的appearance对象统一设置 /**** 设置所有UITabBarItem的文字属性 ****/ UITabBarItem *item = [UITabBarItem appearance] //获取全局的tabBarItem外观标识 UITabBarItem *item = [UITabBarItem appearance]; //获取当前这个类下面的所有tabBarItem UITabBarItem *item = [UITabBarItem appearanceWhenContainedIn:self, nil] appearance使用注意:一定要在控件显示之前设置才有用,一般会放在+
2.1 效果 2.2 添加发光的阴影的代码实现 3.1 避免selectedViewController视图被TabBar挡住 3.2 iOS 13适配深色模式【设置UITabBarItem上title
在实现UITabBarControllerDelegate委托的视图控制器中重写init方法来自定义UITabBarItem条目。 @"My View Controller"; UIImage *anImage = [UIImage imageNamed:@"MyImage.png"]; UITabBarItem *theItem = [[UITabBarItem alloc] initWithTitle:@"Home" image:anImage tag:0]; self.tabBarItem = nil) { UITabBarItem *item = [[UITabBarItem alloc] initWithTitle:@"Home" image:[UIImage imageNamed
SSDataCallback)(NSError * _Nullable error, id _Nullable obj); 四、UITabbar疑难杂症 问题1、batItem的染色异常问题 【问题表现】添加UITabBarItem 到tabbar上,但是图片会被染成蓝色; 【问题分析】tabbar默认会帮我们染色,所以我们创建的UITabBarItem默认会被tinkColor染色的影响。 解决办法就是添加参数imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal,这样UITabBarItem的图片变不会受到tinkColor影响 UITabBarItem *item1 = [[UITabBarItem alloc] initWithTitle:@"商城" image:[UIImage imageNamed:@"tabbar_item_store
1、UITabBarItem里设置的文字不显示 PersonViewController *vc3=[[PersonViewController alloc] init]; vc3.tabBarItem.title init]; UINavigationController *nav1=[[UINavigationController alloc] initWithRootViewController:vc1]; UITabBarItem *tabBar = [[UITabBarItem alloc]initWithTitle:@"首页" image:[UIImage imageNamed:@"tabBar0n"] selectedImage
在做了处理后(代码: UITabBarItem *item = self.tabBar.items[i]; if (i == 2) { item.imageInsets
NSArray * title = @[@"资讯", @"发现", @"社区", @"我的"]; for (int i=0; i<self.tabBar.items.count; i++) { UITabBarItem
有几点值得说明一下: 设置所有UITabBarItem的文字属性在上一篇文章iOS项目——基本框架搭建中已经提到了,这里就不详细介绍了 【发布】按钮的初始化应该使用单例模式进行创建,因为我们项目中只有一个 XMGTabBarController #pragma mark - 初始化 - (void)viewDidLoad { [super viewDidLoad]; /**** 设置所有UITabBarItem 的文字属性 ****/ UITabBarItem *item = [UITabBarItem appearance]; // 普通状态下的文字属性 NSMutableDictionary XMGTabBarController #pragma mark - 初始化 - (void)viewDidLoad { [super viewDidLoad]; /**** 设置所有UITabBarItem