处理tabbar
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@@ -15,13 +15,12 @@
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#import "BaseNavigationController.h"
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#import "KBAuthManager.h"
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@interface BaseTabBarController ()
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#import "KBCustomTabBar.h"
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#import "Masonry.h"
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@interface BaseTabBarController () <KBCustomTabBarDelegate>
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/// 原始的 TabBar appearance（用于恢复）
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@property(nonatomic, strong)
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UITabBarAppearance *originalAppearance API_AVAILABLE(ios(13.0));
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@property(nonatomic, strong)
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UITabBarAppearance *transparentAppearance API_AVAILABLE(ios(13.0));
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/// 自定义 TabBar
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@property(nonatomic, strong) KBCustomTabBar *customTabBar;
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@end
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@@ -32,8 +31,6 @@
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self.delegate = self;
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[self setupTabbarAppearance];
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// 组装 4 个 Tab：首页 / 商城 / 社区 / 我的
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// 图标位于 Assets.xcassets/Tabbar 下：tab_home/tab_home_selected 等
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@@ -70,7 +67,10 @@
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image:@"tab_my"
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selectedImg:@"tab_my_selected"];
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self.viewControllers = @[ navHome, navShop, aiMainVC, navMy ];
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self.viewControllers = @[ navHome, navShop, navCommunity, navMy ];
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// 不隐藏系统 TabBar，而是将自定义视图添加到 TabBar 上
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[self setupCustomTabBarOnNativeTabBar];
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// 测试储存Token
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// [[KBAuthManager shared] saveAccessToken:@"TEST" refreshToken:nil
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@@ -79,66 +79,60 @@
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// [[KBAuthManager shared] signOut];
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}
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- (void)setupTabbarAppearance {
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// 让 TabBar 不透明，子控制器 view 不再延伸到 TabBar 下
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self.tabBar.translucent = NO;
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if (@available(iOS 15.0, *)) {
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UITabBarAppearance *a = [UITabBarAppearance new];
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[a configureWithOpaqueBackground];
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a.backgroundColor = [UIColor whiteColor];
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// 设置选中标题为黑色（iOS 15+ 需通过 appearance）
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NSDictionary *selAttr =
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@{NSForegroundColorAttributeName : [UIColor blackColor]};
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a.stackedLayoutAppearance.selected.titleTextAttributes = selAttr;
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a.inlineLayoutAppearance.selected.titleTextAttributes = selAttr;
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a.compactInlineLayoutAppearance.selected.titleTextAttributes = selAttr;
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self.tabBar.standardAppearance = a;
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self.tabBar.scrollEdgeAppearance = a;
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- (void)setupCustomTabBarOnNativeTabBar {
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// 1. 持续隐藏原生 TabBar 的所有按钮
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[self hideNativeTabBarButtons];
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// 保存原始 appearance
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self.originalAppearance = a;
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// 创建透明 appearance
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UITabBarAppearance *transparentA = [UITabBarAppearance new];
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[transparentA configureWithTransparentBackground];
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transparentA.backgroundColor = [UIColor clearColor];
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transparentA.stackedLayoutAppearance.selected.titleTextAttributes = selAttr;
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transparentA.inlineLayoutAppearance.selected.titleTextAttributes = selAttr;
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transparentA.compactInlineLayoutAppearance.selected.titleTextAttributes =
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selAttr;
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self.transparentAppearance = transparentA;
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} else if (@available(iOS 13.0, *)) {
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UITabBarAppearance *a = [UITabBarAppearance new];
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[a configureWithOpaqueBackground];
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a.backgroundColor = [UIColor whiteColor];
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NSDictionary *selAttr =
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@{NSForegroundColorAttributeName : [UIColor blackColor]};
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a.stackedLayoutAppearance.selected.titleTextAttributes = selAttr;
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a.inlineLayoutAppearance.selected.titleTextAttributes = selAttr;
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a.compactInlineLayoutAppearance.selected.titleTextAttributes = selAttr;
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self.tabBar.standardAppearance = a;
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self.tabBar.tintColor = [UIColor blackColor];
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// 保存原始 appearance
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self.originalAppearance = a;
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// 创建透明 appearance
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UITabBarAppearance *transparentA = [UITabBarAppearance new];
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[transparentA configureWithTransparentBackground];
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transparentA.backgroundColor = [UIColor clearColor];
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transparentA.stackedLayoutAppearance.selected.titleTextAttributes = selAttr;
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transparentA.inlineLayoutAppearance.selected.titleTextAttributes = selAttr;
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transparentA.compactInlineLayoutAppearance.selected.titleTextAttributes =
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selAttr;
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self.transparentAppearance = transparentA;
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} else {
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// 老系统用 tintColor/appearance 做回退
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self.tabBar.tintColor = [UIColor blackColor];
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[[UITabBarItem appearance] setTitleTextAttributes:@{
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NSForegroundColorAttributeName : [UIColor blackColor]
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}
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forState:UIControlStateSelected];
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// 2. 创建自定义 TabBar
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NSMutableArray *items = [NSMutableArray array];
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for (UIViewController *vc in self.viewControllers) {
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[items addObject:vc.tabBarItem];
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}
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self.customTabBar = [[KBCustomTabBar alloc] initWithItems:items];
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self.customTabBar.delegate = self;
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// 3. 设置 frame 覆盖整个 TabBar 区域
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self.customTabBar.frame = self.tabBar.bounds;
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// 4. 使用 autoresizingMask 自动适配尺寸变化
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self.customTabBar.autoresizingMask =
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UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
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// 5. 将自定义 TabBar 添加到原生 TabBar 上
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[self.tabBar addSubview:self.customTabBar];
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// 6. 禁用原生 TabBar 的交互，只让自定义视图响应
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self.tabBar.userInteractionEnabled = YES;
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for (UIView *subview in self.tabBar.subviews) {
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if (subview != self.customTabBar &&
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![NSStringFromClass([subview class]) containsString:@"Background"]) {
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subview.userInteractionEnabled = NO;
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subview.hidden = YES;
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}
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}
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// 7. 设置初始背景色（默认选中索引0，白色背景）
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[self.customTabBar setTransparentBackground:NO];
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}
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- (void)hideNativeTabBarButtons {
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// 移除或隐藏原生 TabBar 的所有子视图（按钮等）
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for (UIView *subview in self.tabBar.subviews) {
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// 保留系统的 _UIBarBackground 背景视图，隐藏其他视图
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if (![NSStringFromClass([subview class]) containsString:@"Background"] &&
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subview != self.customTabBar) {
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subview.hidden = YES;
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subview.alpha = 0;
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}
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}
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}
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- (void)viewWillAppear:(BOOL)animated {
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[super viewWillAppear:animated];
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// 每次视图即将出现时，确保原生按钮被隐藏
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[self hideNativeTabBarButtons];
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}
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// 统一构造 TabBarItem，原图渲染，避免被系统 Tint 着色
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@@ -155,59 +149,24 @@
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return item;
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}
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#pragma mark - UITabBarControllerDelegate
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#pragma mark - KBCustomTabBarDelegate
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- (BOOL)tabBarController:(UITabBarController *)tabBarController
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shouldSelectViewController:(UIViewController *)viewController {
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// 已经是当前选中的 tab，直接允许（避免重复拦截）
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if (tabBarController.selectedViewController == viewController) {
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return YES;
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}
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NSUInteger index =
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[tabBarController.viewControllers indexOfObject:viewController];
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if (index == NSNotFound) {
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return YES;
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}
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// “我的” tab 默认为第 4 个（索引 3），未登录时先跳转登录页
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- (void)customTabBar:(KBCustomTabBar *)tabBar
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didSelectItemAtIndex:(NSInteger)index {
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// 登录检查
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if ((index == 1 || index == 2) && ![KBUserSessionManager shared].isLoggedIn) {
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[[KBUserSessionManager shared] goLoginVC];
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return NO;
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return;
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}
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return YES;
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}
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// 切换 VC
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self.selectedIndex = index;
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- (void)tabBarController:(UITabBarController *)tabBarController
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didSelectViewController:(UIViewController *)viewController {
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NSUInteger index =
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[tabBarController.viewControllers indexOfObject:viewController];
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// 第三个 tab（索引2）是 KBAiMainVC，背景透明
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// 设置 TabBar 背景（索引2是 KBAiMainVC）
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if (index == 2) {
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if (@available(iOS 13.0, *)) {
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self.tabBar.standardAppearance = self.transparentAppearance;
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if (@available(iOS 15.0, *)) {
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self.tabBar.scrollEdgeAppearance = self.transparentAppearance;
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}
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} else {
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// iOS 13 以下，直接设置背景色
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self.tabBar.barTintColor = [UIColor clearColor];
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self.tabBar.backgroundColor = [UIColor clearColor];
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}
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[self.customTabBar setTransparentBackground:YES];
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} else {
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// 其他 tab，恢复原始背景
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if (@available(iOS 13.0, *)) {
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self.tabBar.standardAppearance = self.originalAppearance;
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if (@available(iOS 15.0, *)) {
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self.tabBar.scrollEdgeAppearance = self.originalAppearance;
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}
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} else {
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// iOS 13 以下，恢复白色背景
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self.tabBar.barTintColor = [UIColor whiteColor];
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self.tabBar.backgroundColor = [UIColor whiteColor];
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}
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[self.customTabBar setTransparentBackground:NO];
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}
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}
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