2019

Question

我想在我的应用图标上设置徽章，就像在Apple的邮件应用程序中一样（图标顶部的数字）。我怎么能在Swift（iOS8）中做到这一点？

Answer 1

图标顶部的＆＃34;数字＆＃34;被称为徽章。除了应用程序图标（包括导航栏工具栏图标）之外，还可以在许多项目上设置徽章。

有很多方法可以更改应用程序图标徽章。大多数用例涉及在应用程序处于后台时设置此项以提醒用户他们可能感兴趣的某些更改。这将涉及推送通知。

有关详情，请参阅：https://developer.apple.com/library/archive/documentation/NetworkingInternet/Conceptual/RemoteNotificationsPG/APNSOverview.html#//apple_ref/doc/uid/TP40008194-CH8-SW1

但是，您也可以在应用处于活动状态时进行更改。您需要通过注册UserNotificationType来获得用户的许可。获得许可后，您可以将其更改为您希望的任何数字。

application.registerUserNotificationSettings(UIUserNotificationSettings(forTypes: UIUserNotificationType.Sound | UIUserNotificationType.Alert |
        UIUserNotificationType.Badge, categories: nil
        ))

application.applicationIconBadgeNumber = 5

enter image description here

Answer 2

埃里克的回答似乎已经过时了。看起来像这样 - ＆gt; |被取代了。

这是一个有效的 Swift 2 代码：

    let badgeCount: Int = 0
    let application = UIApplication.sharedApplication()
    application.registerUserNotificationSettings(UIUserNotificationSettings(forTypes: [.Badge, .Alert, .Sound], categories: nil))        
    application.applicationIconBadgeNumber = badgeCount

编辑： Swift 3：

import UIKit
import UserNotifications

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()

        let badgeCount: Int = 10
        let application = UIApplication.shared
        let center = UNUserNotificationCenter.current()
        center.requestAuthorization(options:[.badge, .alert, .sound]) { (granted, error) in
            // Enable or disable features based on authorization.
        }
        application.registerForRemoteNotifications()
        application.applicationIconBadgeNumber = badgeCount
    }  
}

Answer 3

对于 iOS10 ， Swift 3 以及向后兼容性，您可以将最佳答案包装到一个漂亮的（静态）实用程序函数中：< / p>

class func setBadgeIndicator(badgeCount: Int) {
    let application = UIApplication.shared
    if #available(iOS 10.0, *) {
      let center = UNUserNotificationCenter.current()
      center.requestAuthorization(options: [.badge, .alert, .sound]) { _, _ in }
    } else {
      application.registerUserNotificationSettings(UIUserNotificationSettings(types: [.alert, .badge, .sound], categories: nil))
    }
    application.registerForRemoteNotifications()
    application.applicationIconBadgeNumber = badgeCount
  }

Answer 4

2019

答案很简单

void main() {
  test('startLoadingQuizReducer sets isLoading true', () {
    var initState = QuizGameState(null, null, null, false);
    var expectedState = QuizGameState(null, null, null, true);

    var action = StartLoadingQuiz();
    var actualState = quizGameReducer(initState, action);
    // my test fails here 
    expect(actualState, expectedState);
  });

不幸的是，除非您先征得许可，否则它不起作用。

要做到这一点，您只需：

UIApplication.shared.applicationIconBadgeNumber = 777

Answer 5

UIApplication.shared.applicationIconBadgeNumber = NotifCount

使用Swift在iOS 8中为app图标添加徽章

5 个答案:

2019