3

keyBoard/Class/Search/VC/KBSearchResultVC.m

@@ -2,11 +2,6 @@
 //  KBSearchResultVC.m
 //  keyBoard
 //
-//  搜索结果页：顶部为 KBSearchBarView，下面为两列卡片的 UICollectionView。
-//  - Masonry 约束
-//  - 懒加载子视图
-//  - 中文注释
-//
 
 #import "KBSearchResultVC.h"
 #import "KBSearchBarView.h"
@@ -16,7 +11,9 @@ static NSString * const kResultCellId = @"KBSkinCardCell";
 
 @interface KBSearchResultVC ()<UICollectionViewDataSource, UICollectionViewDelegateFlowLayout>
 
-// 顶部搜索栏（复用已封装的 KBSearchBarView）
+// 顶部自定义栏：返回按钮 + 搜索栏
+@property (nonatomic, strong) UIView *topBar;
+@property (nonatomic, strong) UIButton *backButton;
 @property (nonatomic, strong) KBSearchBarView *searchBarView;
 
 // 结果列表
@@ -35,20 +32,32 @@ static NSString * const kResultCellId = @"KBSkinCardCell";
     self.view.backgroundColor = [UIColor whiteColor];
 
     // 添加子视图
-    [self.view addSubview:self.searchBarView];
+    [self.view addSubview:self.topBar];
+    [self.topBar addSubview:self.backButton];
+    [self.topBar addSubview:self.searchBarView];
     [self.view addSubview:self.collectionView];
 
-    // Masonry 布局：搜索在顶部，列表紧随其下
+    // Masonry 布局：顶部自定义栏（无导航栏）
-    [self.searchBarView mas_makeConstraints:^(MASConstraintMaker *make) {
+    [self.topBar mas_makeConstraints:^(MASConstraintMaker *make) {
-        // 顶部与导航栏底对齐，左右各 16 间距，高度 40
+        make.top.equalTo(self.view.mas_top).offset(KB_STATUSBAR_HEIGHT + 8);
-        make.top.equalTo(self.view.mas_top).offset(KB_NAV_TOTAL_HEIGHT + 8);
+        make.left.right.equalTo(self.view);
-        make.left.equalTo(self.view).offset(16);
+        make.height.mas_equalTo(44);
-        make.right.equalTo(self.view).offset(-16);
+    }];
-        make.height.mas_equalTo(40);
+    [self.backButton mas_makeConstraints:^(MASConstraintMaker *make) {
+        make.left.equalTo(self.topBar).offset(12);
+        make.centerY.equalTo(self.topBar);
+        make.width.mas_equalTo(28);
+        make.height.mas_equalTo(36);
+    }];
+    [self.searchBarView mas_makeConstraints:^(MASConstraintMaker *make) {
+        make.centerY.equalTo(self.backButton);
+        make.left.equalTo(self.backButton.mas_right).offset(12);
+        make.width.mas_equalTo(315);
+        make.height.mas_equalTo(36);
+        make.right.lessThanOrEqualTo(self.topBar).offset(-16);
     }];
-
     [self.collectionView mas_makeConstraints:^(MASConstraintMaker *make) {
-        make.top.equalTo(self.searchBarView.mas_bottom).offset(12);
+        make.top.equalTo(self.topBar.mas_bottom).offset(12);
         make.left.right.bottom.equalTo(self.view);
     }];
 
@@ -62,6 +71,19 @@ static NSString * const kResultCellId = @"KBSkinCardCell";
     }
 }
 
+- (void)viewWillAppear:(BOOL)animated {
+    [super viewWillAppear:animated];
+    // 隐藏系统导航栏
+    [self.navigationController setNavigationBarHidden:YES animated:animated];
+}
+
+- (void)viewWillDisappear:(BOOL)animated {
+    [super viewWillDisappear:animated];
+    if (self.isMovingFromParentViewController || self.isBeingDismissed) {
+        [self.navigationController setNavigationBarHidden:NO animated:animated];
+    }
+}
+
 #pragma mark - Private
 
 /// 执行搜索（示例：本地生成一些数据）
@@ -138,6 +160,35 @@ static NSString * const kResultCellId = @"KBSkinCardCell";
     return _searchBarView;
 }
 
+- (UIView *)topBar {
+    if (!_topBar) {
+        _topBar = [[UIView alloc] init];
+        _topBar.backgroundColor = [UIColor whiteColor];
+    }
+    return _topBar;
+}
+
+- (UIButton *)backButton {
+    if (!_backButton) {
+        _backButton = [UIButton buttonWithType:UIButtonTypeSystem];
+        UIImage *img = nil;
+        if (@available(iOS 13.0, *)) {
+            img = [UIImage systemImageNamed:@"chevron.left"];
+        }
+        if (img) {
+            [_backButton setImage:img forState:UIControlStateNormal];
+        } else {
+            [_backButton setTitle:@"<" forState:UIControlStateNormal];
+            _backButton.titleLabel.font = [UIFont systemFontOfSize:22 weight:UIFontWeightSemibold];
+        }
+        [_backButton setTintColor:[UIColor blackColor]];
+        [_backButton addTarget:self action:@selector(onTapBack) forControlEvents:UIControlEventTouchUpInside];
+    }
+    return _backButton;
+}
+
+- (void)onTapBack { [self.navigationController popViewControllerAnimated:YES]; }
+
 - (UICollectionViewFlowLayout *)flowLayout {
     if (!_flowLayout) {
         _flowLayout = [[UICollectionViewFlowLayout alloc] init];
@@ -166,4 +217,3 @@ static NSString * const kResultCellId = @"KBSkinCardCell";
 }
 
 @end
-

keyBoard/Class/Search/VC/KBSearchVC.m

@@ -27,9 +27,10 @@ typedef NS_ENUM(NSInteger, KBSearchSection) {
 };
 
 @interface KBSearchVC ()<UICollectionViewDataSource, UICollectionViewDelegateFlowLayout>
-// 顶部搜索栏（封装的 View）——放到导航栏的 titleView 中，Y 轴与返回按钮一致
+// 自定义顶部区域：返回按钮 + 搜索栏
+@property (nonatomic, strong) UIView *topBar;
+@property (nonatomic, strong) UIButton *backButton;
 @property (nonatomic, strong) KBSearchBarView *searchBarView;
-@property (nonatomic, strong) UIView *titleContainer; // 承载 searchBarView 的容器
 // 列表
 @property (nonatomic, strong) UICollectionView *collectionView;
 @property (nonatomic, strong) UICollectionViewLeftAlignedLayout *flowLayout;
@@ -48,14 +49,35 @@ typedef NS_ENUM(NSInteger, KBSearchSection) {
     self.view.backgroundColor = [UIColor whiteColor];
 
     // UI
+    [self.view addSubview:self.topBar];
+    [self.topBar addSubview:self.backButton];
+    [self.topBar addSubview:self.searchBarView];
     [self.view addSubview:self.collectionView];
 
-    // 将搜索栏放进导航栏 titleView，Y 轴自然与返回按钮对齐
+    // 布局 - Masonry（无导航栏）
-    self.navigationItem.titleView = self.titleContainer;
+    [self.topBar mas_makeConstraints:^(MASConstraintMaker *make) {
+        make.top.equalTo(self.view.mas_top).offset(KB_STATUSBAR_HEIGHT + 8);
+        make.left.right.equalTo(self.view);
+        make.height.mas_equalTo(44); // 容器高度
+    }];
+
+    [self.backButton mas_makeConstraints:^(MASConstraintMaker *make) {
+        make.left.equalTo(self.topBar).offset(12);
+        make.centerY.equalTo(self.topBar);
+        make.width.mas_equalTo(28);
+        make.height.mas_equalTo(36);
+    }];
+
+    [self.searchBarView mas_makeConstraints:^(MASConstraintMaker *make) {
+        make.centerY.equalTo(self.backButton);
+        make.left.equalTo(self.backButton.mas_right).offset(12);
+        make.width.mas_equalTo(315);
+        make.height.mas_equalTo(36);
+        make.right.lessThanOrEqualTo(self.topBar).offset(-16);
+    }];
 
-    // 布局 - Masonry（列表顶端紧贴导航栏底部）
     [self.collectionView mas_makeConstraints:^(MASConstraintMaker *make) {
-        make.top.equalTo(self.view.mas_top).offset(KB_NAV_TOTAL_HEIGHT + 8);
+        make.top.equalTo(self.topBar.mas_bottom).offset(12);
         make.left.right.bottom.equalTo(self.view);
     }];
 
@@ -82,6 +104,20 @@ typedef NS_ENUM(NSInteger, KBSearchSection) {
     }
 }
 
+- (void)viewWillAppear:(BOOL)animated {
+    [super viewWillAppear:animated];
+    // 隐藏系统导航栏，使用自定义返回按钮
+    [self.navigationController setNavigationBarHidden:YES animated:animated];
+}
+
+- (void)viewWillDisappear:(BOOL)animated {
+    [super viewWillDisappear:animated];
+    // 仅在返回上一级时恢复导航栏；push 到下一级（同样隐藏导航栏）不做处理，避免闪烁
+    if (self.isMovingFromParentViewController || self.isBeingDismissed) {
+        [self.navigationController setNavigationBarHidden:NO animated:animated];
+    }
+}
+
 #pragma mark - Private
 
 /// 执行搜索：将关键字置顶到历史（去重、忽略大小写/前后空格）
@@ -337,30 +373,35 @@ typedef NS_ENUM(NSInteger, KBSearchSection) {
     return _searchBarView;
 }
 
-- (UIView *)titleContainer {
+- (UIView *)topBar {
-    if (!_titleContainer) {
+    if (!_topBar) {
-        // 固定尺寸：宽 315，高 36（与返回按钮同一 Y 轴，作为 titleView 显示）
+        _topBar = [[UIView alloc] init];
-        CGFloat width = 315.0;
+        _topBar.backgroundColor = [UIColor whiteColor];
-        _titleContainer = [[UIView alloc] initWithFrame:CGRectMake(0, 0, width, 36.0)];
-        _titleContainer.backgroundColor = [UIColor clearColor];
-        // 告诉导航栏使用 AutoLayout 计算尺寸，并强约束宽高为 315x36
-        _titleContainer.translatesAutoresizingMaskIntoConstraints = NO;
-        [[_titleContainer.widthAnchor constraintEqualToConstant:width] setActive:YES];
-        [[_titleContainer.heightAnchor constraintEqualToConstant:36.0] setActive:YES];
-        [_titleContainer setContentHuggingPriority:UILayoutPriorityRequired forAxis:UILayoutConstraintAxisHorizontal];
-        [_titleContainer setContentCompressionResistancePriority:UILayoutPriorityRequired forAxis:UILayoutConstraintAxisHorizontal];
-
-        // 将 searchBarView 塞入容器，充满容器
-        [_titleContainer addSubview:self.searchBarView];
-        [self.searchBarView mas_makeConstraints:^(MASConstraintMaker *make) {
-            make.edges.equalTo(_titleContainer);
-            make.height.mas_equalTo(36.0);
-        }];
-        
     }
-    return _titleContainer;
+    return _topBar;
 }
 
+- (UIButton *)backButton {
+    if (!_backButton) {
+        _backButton = [UIButton buttonWithType:UIButtonTypeSystem];
+        UIImage *img = nil;
+        if (@available(iOS 13.0, *)) {
+            img = [UIImage systemImageNamed:@"chevron.left"];
+        }
+        if (img) {
+            [_backButton setImage:img forState:UIControlStateNormal];
+        } else {
+            [_backButton setTitle:@"<" forState:UIControlStateNormal];
+            _backButton.titleLabel.font = [UIFont systemFontOfSize:22 weight:UIFontWeightSemibold];
+        }
+        [_backButton setTintColor:[UIColor blackColor]];
+        [_backButton addTarget:self action:@selector(onTapBack) forControlEvents:UIControlEventTouchUpInside];
+    }
+    return _backButton;
+}
+
+- (void)onTapBack { [self.navigationController popViewControllerAnimated:YES]; }
+
 - (UICollectionViewLeftAlignedLayout *)flowLayout {
     if (!_flowLayout) {
         _flowLayout = [[UICollectionViewLeftAlignedLayout alloc] init];