iPhone：推送通知后如何删除徽章？

Question

删除应用图标上的徽章的代码是什么？当我收到推送时，我需要在单击按钮时将其删除！

Answer 1

objC ：

[UIApplication sharedApplication].applicationIconBadgeNumber = 0;

swift ：

UIApplication.sharedApplication().applicationIconBadgeNumber = 0;

Answer 2

您可以通过在代码中添加以下行来删除推送通知中的徽章

(void)applicationDidBecomeActive:(UIApplication *)application
{
    [[UIApplication sharedApplication] cancelAllLocalNotifications];
    [UIApplication sharedApplication].applicationIconBadgeNumber = 0;
}

Answer 3

对于iOS5，只设置徽章编号不会删除通知中心的推送通知。你必须这样做......

[[UIApplication sharedApplication] cancelAllLocalNotifications];
[UIApplication sharedApplication].applicationIconBadgeNumber = 0;

我已经测试了这个。看起来cancelAllLocalNotifications方法也适用于通知中心的推送通知。

Answer 4

Swift 3

File output=new File("C:\\\\MDU-1617-CSJ0098\\\\web\\\\products.txt");
         BufferedWriter writer1 = new BufferedWriter(new FileWriter(output));               

while(q_set2.next())  {
    String s=String.valueOf(q_set2.getInt(1));
    System.out.print(s);
    writer1.write(s);
    writer1.newLine();
}

writer1.flush(); // or writer1.close();

可以添加到以下方法中：

UIApplication.shared.applicationIconBadgeNumber = 0

和

optional public func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey : Any]? = nil) -> Bool