2

keyBoard/Class/Search/V/KBSearchBarView.h

@@ -16,6 +16,9 @@ NS_ASSUME_NONNULL_BEGIN
 /// 输入框
 @property (nonatomic, strong, readonly) UITextField *textField;
 
+/// 背景视图圆角（默认 20），外部可自定义。
+@property (nonatomic, assign) CGFloat bgCornerRadius;
+
 /// 点击键盘 return 或右侧按钮时回调
 @property (nonatomic, copy) void(^onSearch)(NSString *keyword);
 
@@ -28,4 +31,3 @@ NS_ASSUME_NONNULL_BEGIN
 @end
 
 NS_ASSUME_NONNULL_END
-

keyBoard/Class/Search/V/KBSearchBarView.m

@@ -75,7 +75,8 @@
         _bgView = [[UIView alloc] init];
         // 淡灰色背景 + 圆角
         _bgView.backgroundColor = [UIColor colorWithWhite:0.95 alpha:1.0];
-        _bgView.layer.cornerRadius = 20;
+        CGFloat radius = self.bgCornerRadius > 0 ? self.bgCornerRadius : 20.0;
+        _bgView.layer.cornerRadius = radius;
         _bgView.layer.masksToBounds = YES;
     }
     return _bgView;
@@ -122,4 +123,12 @@
     self.textField.placeholder = placeholder;
 }
 
+- (void)setBgCornerRadius:(CGFloat)bgCornerRadius {
+    _bgCornerRadius = bgCornerRadius;
+    // 如果 bgView 已创建，立即更新圆角
+    if (_bgView) {
+        _bgView.layer.cornerRadius = bgCornerRadius;
+    }
+}
+
 @end