添加按钮文字预览提示

CustomKeyboard/View/KBKeyButton.m

@@ -8,7 +8,8 @@
 #import "KBSkinManager.h"
 
 @interface KBKeyButton ()
-@property (nonatomic, strong) UIImageView *iconView;
+// 内部缓存：便于从按钮查找到所属的 KBKeyboardView
+@property (nonatomic, weak, readonly) UIView *kb_keyboardContainer;
 @end
 
 @implementation KBKeyButton
@@ -63,10 +64,8 @@
 
 - (void)setHighlighted:(BOOL)highlighted {
     [super setHighlighted:highlighted];
-
     // 按下时整体做一个等比缩放动画，不改背景色和透明度。
     // 这样无论是纯文字键还是整块皮肤图，都有统一的“按下”视觉反馈。
-    NSLog(@"来了老弟=====");
     CGFloat scale = highlighted ? 0.9 : 1.0; // 可根据手感微调 0.9~0.95
     [UIView animateWithDuration:0.08
                           delay:0
@@ -75,6 +74,23 @@
                          self.transform = CGAffineTransformMakeScale(scale, scale);
                      }
                      completion:nil];
+
+    // 将“按下/抬起”事件转发给键盘视图，用于显示/隐藏顶部预览气泡。
+    UIView *container = self.kb_keyboardContainer;
+    if ([container respondsToSelector:@selector(showPreviewForButton:)] &&
+        [container respondsToSelector:@selector(hidePreview)]) {
+        if (highlighted) {
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Warc-performSelector-leaks"
+            [container performSelector:@selector(showPreviewForButton:) withObject:self];
+#pragma clang diagnostic pop
+        } else {
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Warc-performSelector-leaks"
+            [container performSelector:@selector(hidePreview)];
+#pragma clang diagnostic pop
+        }
+    }
 }
 
 - (void)setSelected:(BOOL)selected {
@@ -124,3 +140,19 @@
 }
 
 @end
+
+@implementation KBKeyButton (KBKeyboardContainer)
+
+- (UIView *)kb_keyboardContainer {
+    UIView *v = self.superview;
+    while (v) {
+        // KBKeyboardView 是当前容器类型，这里用类名字符串避免直接引用头文件死循环
+        if ([NSStringFromClass(v.class) isEqualToString:@"KBKeyboardView"]) {
+            return v;
+        }
+        v = v.superview;
+    }
+    return nil;
+}
+
+@end