self.tabBar.shadowImage=[UIImage new]；在iOS 10之后不工作

在iOS 10之前，我们可以使用

self.tabBar.shadowImage = [UIImage new];

---

但是这个解决方案在iOS 10之后不起作用，有什么想法吗？

我找到了一个通用的解决方案忽略iOS版本

目标-C

BOOL isFound = NO;
for (UIView *view in self.tabBar.subviews) {
    for (UIView *v in view.subviews) {
        if (v.frame.size.height < 2.0f) {
            v.hidden = YES;
            isFound = YES;
            break;
        }
    }
    if (isFound) {
        break;
    }
}

1. [[UITabBar appearance] setBackgroundImage:[[UIImage alloc] init]]; 
2. [[UITabBar appearance] setShadowImage:[[UIImage alloc] init]];
3. [[UITabBar appearance] setValue:@(YES) forKeyPath:@"_hidesShadow"];
4. [[UITabBar appearance] setShadowImage: nil];

BOOL isFound=NO；
for（UIView*self.tabBar.subview中的视图）{
用于（视图中的UIView*v.子视图）{
如果（v.框架.尺寸.高度<2.0f）{
v、 隐藏=是；
isFound=是；
打破
}
}
如果（isFound）{
打破
}
}

试试这个，可能会有帮助

-->对于目标C

BOOL isFound = NO;
for (UIView *view in self.tabBar.subviews) {
    for (UIView *v in view.subviews) {
        if (v.frame.size.height < 2.0f) {
            v.hidden = YES;
            isFound = YES;
            break;
        }
    }
    if (isFound) {
        break;
    }
}

1. [[UITabBar appearance] setBackgroundImage:[[UIImage alloc] init]]; 
2. [[UITabBar appearance] setShadowImage:[[UIImage alloc] init]];
3. [[UITabBar appearance] setValue:@(YES) forKeyPath:@"_hidesShadow"];
4. [[UITabBar appearance] setShadowImage: nil];

-->用于Swift

1. UITabBar.appearance().shadowImage = UIImage()
2. UITabBar.appearance().backgroundImage = UIImage()
3. UITabBar.setValue(true, forKey: "_hidesShadow")
4. UITabBar.appearance().shadowImage = nil