iOS 7：UITabBarItem徽章z-index [英] iOS 7: UITabBarItem badge z-index

问题描述

我想在 selectionIndicatorImage 上方显示 UITabBarItem 徽章。有3个截图：

I'd like to show a UITabBarItem badge above the selectionIndicatorImage. There are 3 screenshots:

浅灰色是 selectionIndicatorImage 。是的，徽章看起来不错。当我在云端图标中触摸 UITabBar 变为：

Light gray color is the selectionIndicatorImage. Yes, badge looks good. When I touch up inside at the cloud icon UITabBar become:

这是错误的..我想在选择图片上方显示徽章。
如果 UITabBar 没有图标 - 看起来不错。

It's wrong.. I'd like to show badge above the selection image. If there is no icon for UITabBar - it looks good.

如何解决此问题？
提前致谢。

How can I fix this issue? Thanks in advance.

我在故事板中添加了图标。对于徽章，我已经制作了代码：

I add icons in the storyboard. For badge I've made the code:

UITabBarItem *cartTabBarItem = (UITabBarItem *)[self.tabBarController.tabBar.items objectAtIndex:3];
if ([[DataSourceWrapper getInstance] getFullCost] == 0)
         cartTabBarItem.badgeValue = nil;
    else
        cartTabBarItem.badgeValue = [NSString stringWithFormat:@"%.0f тнг", [[DataSourceWrapper getInstance] getFullCost]];

对于selectionIndicatorImage

For selectionIndicatorImage

[[UITabBar appearance] setSelectionIndicatorImage:[UIImage imageNamed:@"selected-tabbar-bg.png"]];

推荐答案

我知道这有点棘手，但我认为Apple没有按正确的顺序添加TabBar子视图。
无论如何我已按以下方式修复它

I know it's a bit tricky, but I think Apple didn't add TabBar subview in correct order. anyway I've fixed it the following way

for (UIView *subview in marketTrackerAppDelegate.tabBarController.tabBar.subviews)
{
    if ([marketTrackerAppDelegate.tabBarController.neededController.tabBarItem respondsToSelector:@selector(view)] &&
        [marketTrackerAppDelegate.tabBarController.neededController.tabBarItem performSelector:@selector(view)] == subview)
    {
        [marketTrackerAppDelegate.tabBarController.tabBar bringSubviewToFront:subview];
        break;
    }
}

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