ios - UITabBarItem 在 iOS 7.1 中更改角标(Badge)颜色

Question

您好，我正在尝试更改 UITabBarItem 的角标(Badge)颜色。下面是我用来实现相同目的的代码。以下代码适用于 iOS 7.0。但它不适用于 iOS 7.1。感谢任何帮助。

for (UIView* tabBarButton in _tabbar.subviews) {
    for (UIView* badgeView in tabBarButton.subviews) {
        NSString* className = NSStringFromClass([badgeView class]);  
        // looking for _UIBadgeView
        if ([className rangeOfString:@"BadgeView"].location != NSNotFound) {
            for (UIView* badgeSubview in badgeView.subviews) {
                NSString* className = NSStringFromClass([badgeSubview class]);

                // looking for _UIBadgeBackground
                if ([className rangeOfString:@"BadgeBackground"].location != NSNotFound) {
                    @try {
                        NSLog(@"*******************BADGE IMAGE SET *******************");
                        [badgeSubview setValue:[UIImage imageNamed:@"count_bg.png"] forKey:@"image"];
                        //[badgeSubview setTintColor:[UIColor greenColor]];
                    }
                    @catch (NSException *exception) {}
                }

                if ([badgeSubview isKindOfClass:[UILabel class]]) {
                    ((UILabel *)badgeSubview).textColor = [UIColor whiteColor];
                }
            }
        }
    }
}

Answer 1

最后，我向 tabBar 添加了一个具有所需颜色的标签，并获得了预期的结果。

    UILabel *badge=[[UILabel alloc]init];
    badge.text = @"2";
    badge.textAlignment=NSTextAlignmentCenter;
    badge.frame=CGRectMake(122, 1, 20, 20);
    badge.layer.cornerRadius=10;
    badge.textColor=[UIColor whiteColor];
    badge.backgroundColor=[UIColor greenColor];
    [tabbar addSubview:badge];