KBFunctionView 长按删除不弹出立刻清空按钮

CustomKeyboard/View/KBKeyboardView.m

@@ -93,7 +93,7 @@ static const CGFloat kKBLettersRow2EdgeSpacerMultiplier = 0.5;
 #pragma mark - Public
 
 - (void)reloadKeys {
-    [self.backspaceHandler bindDeleteButton:nil];
+    [self.backspaceHandler bindDeleteButton:nil showClearLabel:NO];
     // 移除旧按钮
     for (UIView *row in @[self.row1, self.row2, self.row3, self.row4]) {
         [row.subviews makeObjectsPerformSelector:@selector(removeFromSuperview)];
@@ -370,7 +370,7 @@ edgeSpacerMultiplier:(CGFloat)edgeSpacerMultiplier {
         [row addSubview:btn];
 
         if (key.type == KBKeyTypeBackspace) {
-            [self.backspaceHandler bindDeleteButton:btn];
+            [self.backspaceHandler bindDeleteButton:btn showClearLabel:YES];
         }
 
         // Shift 按钮选中态随大小写状态变化