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处理tabbar

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CodeST
2026-01-19 19:14:20 +08:00
parent 063ceae10f
commit d1d47336c2
7 changed files with 365 additions and 218 deletions
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32
keyBoard/Class/Base/V/KBCustomTabBar.h Normal file
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@@ -0,0 +1,32 @@
//
// KBCustomTabBar.h
// keyBoard
//
// Created by Assistant on 2026/01/16.
//
#import <UIKit/UIKit.h>
NS_ASSUME_NONNULL_BEGIN
@class KBCustomTabBar;
@protocol KBCustomTabBarDelegate <NSObject>
- (void)customTabBar:(KBCustomTabBar *)tabBar
didSelectItemAtIndex:(NSInteger)index;
@end
@interface KBCustomTabBar : UIView
@property(nonatomic, weak) id<KBCustomTabBarDelegate> delegate;
@property(nonatomic, assign) NSInteger selectedIndex;
- (instancetype)initWithItems:(NSArray<UITabBarItem *> *)items;
- (void)setSelectedIndex:(NSInteger)selectedIndex animated:(BOOL)animated;
- (void)setTransparentBackground:(BOOL)transparent;
@end
NS_ASSUME_NONNULL_END

159
keyBoard/Class/Base/V/KBCustomTabBar.m Normal file
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@@ -0,0 +1,159 @@
//
// KBCustomTabBar.m
// keyBoard
//
// Created by Assistant on 2026/01/16.
//
#import "KBCustomTabBar.h"
#import "Masonry.h"
@interface KBCustomTabBar ()
@property(nonatomic, strong) NSArray<UITabBarItem *> *items;
@property(nonatomic, strong) NSMutableArray<UIButton *> *buttons;
@property(nonatomic, strong) UIView *backgroundView;
@end
@implementation KBCustomTabBar
- (instancetype)initWithItems:(NSArray<UITabBarItem *> *)items {
self = [super initWithFrame:CGRectZero];
if (self) {
_items = items;
_selectedIndex = 0;
_buttons = [NSMutableArray array];
[self setupUI];
}
return self;
}
- (void)setupUI {
// 背景视图
self.backgroundView = [[UIView alloc] init];
self.backgroundView.backgroundColor = [UIColor whiteColor];
[self addSubview:self.backgroundView];
[self.backgroundView mas_makeConstraints:^(MASConstraintMaker *make) {
make.edges.equalTo(self);
}];
// 创建按钮
UIStackView *stackView = [[UIStackView alloc] init];
stackView.axis = UILayoutConstraintAxisHorizontal;
stackView.distribution = UIStackViewDistributionFillEqually;
stackView.alignment = UIStackViewAlignmentFill;
[self addSubview:stackView];
[stackView mas_makeConstraints:^(MASConstraintMaker *make) {
make.edges.equalTo(self);
}];
for (NSInteger i = 0; i < self.items.count; i++) {
UITabBarItem *item = self.items[i];
UIButton *button = [self createButtonWithItem:item index:i];
[stackView addArrangedSubview:button];
[self.buttons addObject:button];
}
// 设置初始选中状态
[self updateButtonStates];
}
- (UIButton *)createButtonWithItem:(UITabBarItem *)item index:(NSInteger)index {
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
button.tag = index;
// 设置图片
[button setImage:item.image forState:UIControlStateNormal];
[button setImage:item.selectedImage forState:UIControlStateSelected];
// 设置标题
[button setTitle:item.title forState:UIControlStateNormal];
[button setTitleColor:[UIColor grayColor] forState:UIControlStateNormal];
[button setTitleColor:[UIColor blackColor] forState:UIControlStateSelected];
button.titleLabel.font = [UIFont systemFontOfSize:10];
// 布局：图片在上，文字在下
button.imageView.contentMode = UIViewContentModeScaleAspectFit;
button.titleLabel.textAlignment = NSTextAlignmentCenter;
// 调整图片和文字位置
CGFloat spacing = 4.0;
button.imageEdgeInsets = UIEdgeInsetsMake(-spacing, 0, spacing, 0);
button.titleEdgeInsets = UIEdgeInsetsMake(
spacing, -button.imageView.frame.size.width, -spacing, 0);
button.contentEdgeInsets = UIEdgeInsetsMake(spacing, 0, spacing, 0);
// 垂直排列
[button setContentVerticalAlignment:UIControlContentVerticalAlignmentCenter];
[button
setContentHorizontalAlignment:UIControlContentHorizontalAlignmentCenter];
[button addTarget:self
action:@selector(buttonTapped:)
forControlEvents:UIControlEventTouchUpInside];
return button;
}
- (void)buttonTapped:(UIButton *)button {
NSInteger index = button.tag;
if (index != self.selectedIndex) {
self.selectedIndex = index;
[self updateButtonStates];
if ([self.delegate respondsToSelector:@selector(customTabBar:
didSelectItemAtIndex:)]) {
[self.delegate customTabBar:self didSelectItemAtIndex:index];
}
}
}
- (void)setSelectedIndex:(NSInteger)selectedIndex animated:(BOOL)animated {
if (_selectedIndex != selectedIndex) {
_selectedIndex = selectedIndex;
[self updateButtonStates];
}
}
- (void)setSelectedIndex:(NSInteger)selectedIndex {
[self setSelectedIndex:selectedIndex animated:NO];
}
- (void)updateButtonStates {
for (NSInteger i = 0; i < self.buttons.count; i++) {
UIButton *button = self.buttons[i];
button.selected = (i == self.selectedIndex);
}
}
- (void)setTransparentBackground:(BOOL)transparent {
if (transparent) {
self.backgroundView.backgroundColor = [UIColor clearColor];
} else {
self.backgroundView.backgroundColor = [UIColor whiteColor];
}
}
- (void)layoutSubviews {
[super layoutSubviews];
// 调整按钮的图片和文字布局
for (UIButton *button in self.buttons) {
CGFloat imageWidth = button.imageView.frame.size.width;
CGFloat imageHeight = button.imageView.frame.size.height;
CGFloat titleWidth = button.titleLabel.frame.size.width;
CGFloat titleHeight = button.titleLabel.frame.size.height;
CGFloat spacing = 4.0;
// 图片在上
button.imageEdgeInsets =
UIEdgeInsetsMake(-(titleHeight + spacing), 0, 0, -titleWidth);
// 文字在下
button.titleEdgeInsets =
UIEdgeInsetsMake(0, -imageWidth, -(imageHeight + spacing), 0);
}
}
@end

135
keyBoard/Class/Base/VC/BaseNavigationController.m
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@@ -14,84 +14,97 @@
@implementation BaseNavigationController
- (void)viewDidLoad {
[super viewDidLoad];
// 统一返回箭头样式与颜色
UIImage *backImg = [UIImage imageNamed:@"back_black_icon"];
if (backImg) {
self.navigationBar.backIndicatorImage = backImg;
self.navigationBar.backIndicatorTransitionMaskImage = backImg;
}
self.navigationBar.tintColor = [UIColor blackColor]; // 箭头/按钮的着色
[super viewDidLoad];
// 统一返回箭头样式与颜色
UIImage *backImg = [UIImage imageNamed:@"back_black_icon"];
if (backImg) {
self.navigationBar.backIndicatorImage = backImg;
self.navigationBar.backIndicatorTransitionMaskImage = backImg;
}
self.navigationBar.tintColor = [UIColor blackColor]; // 箭头/按钮的着色
if (@available(iOS 14.0, *)) {
self.navigationBar.topItem.backButtonDisplayMode = UINavigationItemBackButtonDisplayModeMinimal;
}
if (@available(iOS 14.0, *)) {
self.navigationBar.topItem.backButtonDisplayMode =
UINavigationItemBackButtonDisplayModeMinimal;
}
// 统一开启“边缘右滑返回”（interactivePopGestureRecognizer 在自定义导航栏/隐藏系统导航栏场景下可能失效）
if (self.interactivePopGestureRecognizer) {
self.interactivePopGestureRecognizer.delegate = self;
self.interactivePopGestureRecognizer.enabled = YES;
}
// 统一开启“边缘右滑返回”（interactivePopGestureRecognizer
// 在自定义导航栏/隐藏系统导航栏场景下可能失效）
if (self.interactivePopGestureRecognizer) {
self.interactivePopGestureRecognizer.delegate = self;
self.interactivePopGestureRecognizer.enabled = YES;
}
}
- (void)pushViewController:(UIViewController *)viewController animated:(BOOL)animated{
if (self.viewControllers.count > 0) {
viewController.hidesBottomBarWhenPushed = true;
UIViewController *prev = self.topViewController;
if (@available(iOS 14.0, *)) {
prev.navigationItem.backButtonDisplayMode = UINavigationItemBackButtonDisplayModeMinimal;
} else {
prev.navigationItem.backBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"" style:UIBarButtonItemStylePlain target:nil action:nil];
}
- (void)pushViewController:(UIViewController *)viewController
animated:(BOOL)animated {
if (self.viewControllers.count > 0) {
viewController.hidesBottomBarWhenPushed = true;
UIViewController *prev = self.topViewController;
if (@available(iOS 14.0, *)) {
prev.navigationItem.backButtonDisplayMode =
UINavigationItemBackButtonDisplayModeMinimal;
} else {
prev.navigationItem.backBarButtonItem =
[[UIBarButtonItem alloc] initWithTitle:@""
style:UIBarButtonItemStylePlain
target:nil
action:nil];
}
[super pushViewController:viewController animated:animated];
}
[super pushViewController:viewController animated:animated];
}
#pragma mark - UIGestureRecognizerDelegate
- (BOOL)gestureRecognizerShouldBegin:(UIGestureRecognizer *)gestureRecognizer {
if (gestureRecognizer == self.interactivePopGestureRecognizer) {
return self.viewControllers.count > 1;
}
return YES;
if (gestureRecognizer == self.interactivePopGestureRecognizer) {
return self.viewControllers.count > 1;
}
return YES;
}
/// Push 一个 VC，若栈中已存在相同 class 的 VC，则先移除旧的再 push 新的。
- (void)kb_pushViewControllerRemovingSameClass:(UIViewController *)viewController
animated:(BOOL)animated {
if (!viewController) { return; }
- (void)kb_pushViewControllerRemovingSameClass:
(UIViewController *)viewController
animated:(BOOL)animated {
if (!viewController) {
return;
}
NSMutableArray<UIViewController *> *stack = self.viewControllers.mutableCopy;
// 移除同 class 的旧 VC（通常只有一个，这里按需移除第一个）
UIViewController *toRemove = nil;
for (UIViewController *vc in stack) {
if ([vc isKindOfClass:[viewController class]]) {
toRemove = vc;
break;
}
NSMutableArray<UIViewController *> *stack = self.viewControllers.mutableCopy;
// 移除同 class 的旧 VC（通常只有一个，这里按需移除第一个）
UIViewController *toRemove = nil;
for (UIViewController *vc in stack) {
if ([vc isKindOfClass:[viewController class]]) {
toRemove = vc;
break;
}
if (toRemove) {
[stack removeObject:toRemove];
}
if (toRemove) {
[stack removeObject:toRemove];
}
// 追加新 VC
[stack addObject:viewController];
// 对前一个 VC 做统一的返回按钮样式处理，与 pushViewController: 保持一致
if (stack.count > 1) {
viewController.hidesBottomBarWhenPushed = YES;
UIViewController *prev = stack[stack.count - 2];
if (@available(iOS 14.0, *)) {
prev.navigationItem.backButtonDisplayMode =
UINavigationItemBackButtonDisplayModeMinimal;
} else {
prev.navigationItem.backBarButtonItem =
[[UIBarButtonItem alloc] initWithTitle:@""
style:UIBarButtonItemStylePlain
target:nil
action:nil];
}
}
// 追加新 VC
[stack addObject:viewController];
// 对前一个 VC 做统一的返回按钮样式处理，与 pushViewController: 保持一致
if (stack.count > 1) {
viewController.hidesBottomBarWhenPushed = YES;
UIViewController *prev = stack[stack.count - 2];
if (@available(iOS 14.0, *)) {
prev.navigationItem.backButtonDisplayMode = UINavigationItemBackButtonDisplayModeMinimal;
} else {
prev.navigationItem.backBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@""
style:UIBarButtonItemStylePlain
target:nil
action:nil];
}
}
[self setViewControllers:stack animated:animated];
[self setViewControllers:stack animated:animated];
}
@end

183
keyBoard/Class/Base/VC/BaseTabBarController.m
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@@ -15,13 +15,12 @@
#import "BaseNavigationController.h"
#import "KBAuthManager.h"
@interface BaseTabBarController ()
#import "KBCustomTabBar.h"
#import "Masonry.h"
@interface BaseTabBarController () <KBCustomTabBarDelegate>
/// 原始的 TabBar appearance（用于恢复）
@property(nonatomic, strong)
UITabBarAppearance *originalAppearance API_AVAILABLE(ios(13.0));
@property(nonatomic, strong)
UITabBarAppearance *transparentAppearance API_AVAILABLE(ios(13.0));
/// 自定义 TabBar
@property(nonatomic, strong) KBCustomTabBar *customTabBar;
@end
@@ -32,8 +31,6 @@
self.delegate = self;
[self setupTabbarAppearance];
// 组装 4 个 Tab：首页 / 商城 / 社区 / 我的
// 图标位于 Assets.xcassets/Tabbar 下：tab_home/tab_home_selected 等
@@ -70,7 +67,10 @@
image:@"tab_my"
selectedImg:@"tab_my_selected"];
self.viewControllers = @[ navHome, navShop, aiMainVC, navMy ];
self.viewControllers = @[ navHome, navShop, navCommunity, navMy ];
// 不隐藏系统 TabBar，而是将自定义视图添加到 TabBar 上
[self setupCustomTabBarOnNativeTabBar];
// 测试储存Token
// [[KBAuthManager shared] saveAccessToken:@"TEST" refreshToken:nil
@@ -79,66 +79,60 @@
// [[KBAuthManager shared] signOut];
}
- (void)setupTabbarAppearance {
// 让 TabBar 不透明，子控制器 view 不再延伸到 TabBar 下
self.tabBar.translucent = NO;
if (@available(iOS 15.0, *)) {
UITabBarAppearance *a = [UITabBarAppearance new];
[a configureWithOpaqueBackground];
a.backgroundColor = [UIColor whiteColor];
// 设置选中标题为黑色（iOS 15+ 需通过 appearance）
NSDictionary *selAttr =
@{NSForegroundColorAttributeName : [UIColor blackColor]};
a.stackedLayoutAppearance.selected.titleTextAttributes = selAttr;
a.inlineLayoutAppearance.selected.titleTextAttributes = selAttr;
a.compactInlineLayoutAppearance.selected.titleTextAttributes = selAttr;
self.tabBar.standardAppearance = a;
self.tabBar.scrollEdgeAppearance = a;
- (void)setupCustomTabBarOnNativeTabBar {
// 1. 持续隐藏原生 TabBar 的所有按钮
[self hideNativeTabBarButtons];
// 保存原始 appearance
self.originalAppearance = a;
// 创建透明 appearance
UITabBarAppearance *transparentA = [UITabBarAppearance new];
[transparentA configureWithTransparentBackground];
transparentA.backgroundColor = [UIColor clearColor];
transparentA.stackedLayoutAppearance.selected.titleTextAttributes = selAttr;
transparentA.inlineLayoutAppearance.selected.titleTextAttributes = selAttr;
transparentA.compactInlineLayoutAppearance.selected.titleTextAttributes =
selAttr;
self.transparentAppearance = transparentA;
} else if (@available(iOS 13.0, *)) {
UITabBarAppearance *a = [UITabBarAppearance new];
[a configureWithOpaqueBackground];
a.backgroundColor = [UIColor whiteColor];
NSDictionary *selAttr =
@{NSForegroundColorAttributeName : [UIColor blackColor]};
a.stackedLayoutAppearance.selected.titleTextAttributes = selAttr;
a.inlineLayoutAppearance.selected.titleTextAttributes = selAttr;
a.compactInlineLayoutAppearance.selected.titleTextAttributes = selAttr;
self.tabBar.standardAppearance = a;
self.tabBar.tintColor = [UIColor blackColor];
// 保存原始 appearance
self.originalAppearance = a;
// 创建透明 appearance
UITabBarAppearance *transparentA = [UITabBarAppearance new];
[transparentA configureWithTransparentBackground];
transparentA.backgroundColor = [UIColor clearColor];
transparentA.stackedLayoutAppearance.selected.titleTextAttributes = selAttr;
transparentA.inlineLayoutAppearance.selected.titleTextAttributes = selAttr;
transparentA.compactInlineLayoutAppearance.selected.titleTextAttributes =
selAttr;
self.transparentAppearance = transparentA;
} else {
// 老系统用 tintColor/appearance 做回退
self.tabBar.tintColor = [UIColor blackColor];
[[UITabBarItem appearance] setTitleTextAttributes:@{
NSForegroundColorAttributeName : [UIColor blackColor]
}
forState:UIControlStateSelected];
// 2. 创建自定义 TabBar
NSMutableArray *items = [NSMutableArray array];
for (UIViewController *vc in self.viewControllers) {
[items addObject:vc.tabBarItem];
}
self.customTabBar = [[KBCustomTabBar alloc] initWithItems:items];
self.customTabBar.delegate = self;
// 3. 设置 frame 覆盖整个 TabBar 区域
self.customTabBar.frame = self.tabBar.bounds;
// 4. 使用 autoresizingMask 自动适配尺寸变化
self.customTabBar.autoresizingMask =
UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
// 5. 将自定义 TabBar 添加到原生 TabBar 上
[self.tabBar addSubview:self.customTabBar];
// 6. 禁用原生 TabBar 的交互，只让自定义视图响应
self.tabBar.userInteractionEnabled = YES;
for (UIView *subview in self.tabBar.subviews) {
if (subview != self.customTabBar &&
![NSStringFromClass([subview class]) containsString:@"Background"]) {
subview.userInteractionEnabled = NO;
subview.hidden = YES;
}
}
// 7. 设置初始背景色（默认选中索引0，白色背景）
[self.customTabBar setTransparentBackground:NO];
}
- (void)hideNativeTabBarButtons {
// 移除或隐藏原生 TabBar 的所有子视图（按钮等）
for (UIView *subview in self.tabBar.subviews) {
// 保留系统的 _UIBarBackground 背景视图，隐藏其他视图
if (![NSStringFromClass([subview class]) containsString:@"Background"] &&
subview != self.customTabBar) {
subview.hidden = YES;
subview.alpha = 0;
}
}
}
- (void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
// 每次视图即将出现时，确保原生按钮被隐藏
[self hideNativeTabBarButtons];
}
// 统一构造 TabBarItem，原图渲染，避免被系统 Tint 着色
@@ -155,59 +149,24 @@
return item;
}
#pragma mark - UITabBarControllerDelegate
#pragma mark - KBCustomTabBarDelegate
- (BOOL)tabBarController:(UITabBarController *)tabBarController
shouldSelectViewController:(UIViewController *)viewController {
// 已经是当前选中的 tab，直接允许（避免重复拦截）
if (tabBarController.selectedViewController == viewController) {
return YES;
}
NSUInteger index =
[tabBarController.viewControllers indexOfObject:viewController];
if (index == NSNotFound) {
return YES;
}
// “我的” tab 默认为第 4 个（索引 3），未登录时先跳转登录页
- (void)customTabBar:(KBCustomTabBar *)tabBar
didSelectItemAtIndex:(NSInteger)index {
// 登录检查
if ((index == 1 || index == 2) && ![KBUserSessionManager shared].isLoggedIn) {
[[KBUserSessionManager shared] goLoginVC];
return NO;
return;
}
return YES;
}
// 切换 VC
self.selectedIndex = index;
- (void)tabBarController:(UITabBarController *)tabBarController
didSelectViewController:(UIViewController *)viewController {
NSUInteger index =
[tabBarController.viewControllers indexOfObject:viewController];
// 第三个 tab（索引2）是 KBAiMainVC，背景透明
// 设置 TabBar 背景（索引2是 KBAiMainVC）
if (index == 2) {
if (@available(iOS 13.0, *)) {
self.tabBar.standardAppearance = self.transparentAppearance;
if (@available(iOS 15.0, *)) {
self.tabBar.scrollEdgeAppearance = self.transparentAppearance;
}
} else {
// iOS 13 以下，直接设置背景色
self.tabBar.barTintColor = [UIColor clearColor];
self.tabBar.backgroundColor = [UIColor clearColor];
}
[self.customTabBar setTransparentBackground:YES];
} else {
// 其他 tab，恢复原始背景
if (@available(iOS 13.0, *)) {
self.tabBar.standardAppearance = self.originalAppearance;
if (@available(iOS 15.0, *)) {
self.tabBar.scrollEdgeAppearance = self.originalAppearance;
}
} else {
// iOS 13 以下，恢复白色背景
self.tabBar.barTintColor = [UIColor whiteColor];
self.tabBar.backgroundColor = [UIColor whiteColor];
}
[self.customTabBar setTransparentBackground:NO];
}
}