添加设置

CustomKeyboard/View/KBKeyBoardMainView.h

@@ -20,6 +20,9 @@ NS_ASSUME_NONNULL_BEGIN
 /// 顶部工具栏按钮点击回调（index: 0~3）。
 /// 需求：当 index == 0 时，由外部（KeyboardViewController）决定是否切换到功能面板
 - (void)keyBoardMainView:(KBKeyBoardMainView *)keyBoardMainView didTapToolActionAtIndex:(NSInteger)index;
+
+/// 点击了右侧设置按钮
+- (void)keyBoardMainViewDidTapSettings:(KBKeyBoardMainView *)keyBoardMainView;
 @end
 
 @interface KBKeyBoardMainView : UIView

CustomKeyboard/View/KBKeyBoardMainView.m

@@ -59,8 +59,9 @@
 }
 
 - (void)toolBarDidTapSettings:(KBToolBar *)toolBar {
-    // 这里示例仅插入一个标记。
-//    [self.textDocumentProxy insertText:@"[settings]"];
+    if ([self.delegate respondsToSelector:@selector(keyBoardMainViewDidTapSettings:)]) {
+        [self.delegate keyBoardMainViewDidTapSettings:self];
+    }
 }
 
 #pragma mark - KBKeyboardViewDelegate
@@ -112,4 +113,6 @@
 
 // 切换功能面板交由外部控制器处理（此处不再实现）
 
+// 设置页展示改由 KeyboardViewController 统一处理
+
 @end

CustomKeyboard/View/KBSettingView.h

@@ -0,0 +1,20 @@
+//
+//  KBSettingView.h
+//  CustomKeyboard
+//
+//  简单的设置页面：左上角返回箭头按钮 + 占位内容区域。
+//
+
+#import <UIKit/UIKit.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface KBSettingView : UIView
+
+/// 左上角返回按钮（外部添加 target 实现返回）
+@property (nonatomic, strong, readonly) UIButton *backButton;
+
+@end
+
+NS_ASSUME_NONNULL_END
+

CustomKeyboard/View/KBSettingView.m

@@ -0,0 +1,71 @@
+//
+//  KBSettingView.m
+//  CustomKeyboard
+//
+
+#import "KBSettingView.h"
+#import "Masonry.h"
+
+@interface KBSettingView ()
+@property (nonatomic, strong) UIButton *backButtonInternal;
+@property (nonatomic, strong) UILabel *titleLabel;
+@end
+
+@implementation KBSettingView
+
+- (instancetype)initWithFrame:(CGRect)frame {
+    if (self = [super initWithFrame:frame]) {
+        // 背景做成淡色，和主界面区分
+        self.backgroundColor = [UIColor colorWithWhite:1 alpha:0.96];
+
+        [self addSubview:self.backButtonInternal];
+        [self.backButtonInternal mas_makeConstraints:^(MASConstraintMaker *make) {
+            make.left.equalTo(self.mas_left).offset(10);
+            make.top.equalTo(self.mas_top).offset(8);
+            make.width.height.mas_equalTo(32);
+        }];
+
+        self.titleLabel = [[UILabel alloc] init];
+        self.titleLabel.text = @"设置";
+        self.titleLabel.font = [UIFont systemFontOfSize:16 weight:UIFontWeightSemibold];
+        self.titleLabel.textColor = [UIColor blackColor];
+        [self addSubview:self.titleLabel];
+        [self.titleLabel mas_makeConstraints:^(MASConstraintMaker *make) {
+            make.centerY.equalTo(self.backButtonInternal.mas_centerY);
+            make.centerX.equalTo(self.mas_centerX);
+        }];
+
+        // 占位内容
+        UILabel *place = [[UILabel alloc] init];
+        place.text = @"这里是设置内容占位";
+        place.textColor = [UIColor darkGrayColor];
+        place.font = [UIFont systemFontOfSize:14];
+        [self addSubview:place];
+        [place mas_makeConstraints:^(MASConstraintMaker *make) {
+            make.center.equalTo(self);
+        }];
+    }
+    return self;
+}
+
+#pragma mark - Lazy
+
+- (UIButton *)backButtonInternal {
+    if (!_backButtonInternal) {
+        _backButtonInternal = [UIButton buttonWithType:UIButtonTypeSystem];
+        _backButtonInternal.layer.cornerRadius = 16;
+        _backButtonInternal.layer.masksToBounds = YES;
+        _backButtonInternal.backgroundColor = [UIColor colorWithWhite:0.95 alpha:1.0];
+        [_backButtonInternal setTitle:@"←" forState:UIControlStateNormal]; // 返回箭头
+        [_backButtonInternal setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
+        _backButtonInternal.titleLabel.font = [UIFont systemFontOfSize:16 weight:UIFontWeightSemibold];
+    }
+    return _backButtonInternal;
+}
+
+#pragma mark - Expose
+
+- (UIButton *)backButton { return self.backButtonInternal; }
+
+@end
+