更改UITabBar徽章顏色

Question

是否可以更改從Xcode構建的Objective-C iPhone應用程序的標簽欄徽章顏色？ 它總是紅色的。 任何人都可以指示我解決它嗎？

謝謝

Answer 1

對於使用Swift的人：

 extension UITabBarController {

  func setBadges(badgeValues: [Int]) {

        for view in self.tabBar.subviews {
            if view is CustomTabBadge {
                view.removeFromSuperview()
            }
        }

        for index in 0...badgeValues.count-1 {
            if badgeValues[index] != 0 {
                addBadge(index, value: badgeValues[index], color:UIColor(paletteItem: .Accent), font: UIFont(name: Constants.ThemeApp.regularFontName, size: 11)!)
            }
        }
    }

    func addBadge(index: Int, value: Int, color: UIColor, font: UIFont) {
        let badgeView = CustomTabBadge()

        badgeView.clipsToBounds = true
        badgeView.textColor = UIColor.whiteColor()
        badgeView.textAlignment = .Center
        badgeView.font = font
        badgeView.text = String(value)
        badgeView.backgroundColor = color
        badgeView.tag = index
        tabBar.addSubview(badgeView)

        self.positionBadges()
    }

    override public func viewDidLayoutSubviews() {
        super.viewDidLayoutSubviews()
        self.tabBar.setNeedsLayout()
        self.tabBar.layoutIfNeeded()
        self.positionBadges()
    }

    // Positioning
    func positionBadges() {

        var tabbarButtons = self.tabBar.subviews.filter { (view: UIView) -> Bool in
            return view.userInteractionEnabled // only UITabBarButton are userInteractionEnabled
        }

        tabbarButtons = tabbarButtons.sort({ $0.frame.origin.x < $1.frame.origin.x })

        for view in self.tabBar.subviews {
            if view is CustomTabBadge {
                let badgeView = view as! CustomTabBadge
                self.positionBadge(badgeView, items:tabbarButtons, index: badgeView.tag)
            }
        }
    }

    func positionBadge(badgeView: UIView, items: [UIView], index: Int) {

        let itemView = items[index]
        let center = itemView.center

        let xOffset: CGFloat = 12
        let yOffset: CGFloat = -14
        badgeView.frame.size = CGSizeMake(17, 17)
        badgeView.center = CGPointMake(center.x + xOffset, center.y + yOffset)
        badgeView.layer.cornerRadius = badgeView.bounds.width/2
        tabBar.bringSubviewToFront(badgeView)
    }
}

class CustomTabBadge: UILabel {}

Answer 2

設置post iOS 10徽章顏色的最簡單方法

if #available(iOS 10, *) 
{
    UITabBarItem.appearance().badgeColor = .green
}

Answer 3

似乎蘋果看到了這個需求，在iOS 10中你現在可以使用UITabBarItem的UIColor *badgeColor屬性。

Answer 4

這里有一個更強大的解決方案UITabbarItem-CustomBadge 。

演示

這兩行代碼，可以開始了

-(BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

  //supplying the animation parameter
  [UITabBarItem setDefaultAnimationProvider:[[DefaultTabbarBadgeAnimation alloc] init]];
  [UITabBarItem setDefaultConfigurationProvider:[[DefaultSystemLikeBadgeConfiguration alloc] init]];

  //rest of your code goes following...

  return YES;
}