1

CustomKeyboard/View/KBKeyButton.m

@@ -38,7 +38,7 @@
     if (!self.iconView) {
         UIImageView *iv = [[UIImageView alloc] initWithFrame:CGRectZero];
         // 作为按键的整块皮肤背景，铺满整个按钮区域
-        iv.contentMode = UIViewContentModeScaleAspectFill;
+        iv.contentMode = UIViewContentModeScaleAspectFit;
         iv.clipsToBounds = YES;
         iv.translatesAutoresizingMaskIntoConstraints = NO;
         [self addSubview:iv];