测试配置

CustomKeyboard/View/KBToolBar.h

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+//
+//  KBToolBar.h
+//  CustomKeyboard
+//
+//  Created by Mac on 2025/10/27.
+//
+
+#import <UIKit/UIKit.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface KBToolBar : UIView
+
+@end
+
+NS_ASSUME_NONNULL_END

CustomKeyboard/View/KBToolBar.m

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+//
+//  KBToolBar.m
+//  CustomKeyboard
+//
+//  Created by Mac on 2025/10/27.
+//
+
+#import "KBToolBar.h"
+
+@implementation KBToolBar
+
+/*
+// Only override drawRect: if you perform custom drawing.
+// An empty implementation adversely affects performance during animation.
+- (void)drawRect:(CGRect)rect {
+    // Drawing code
+}
+*/
+
+@end