什么时候调用 didRegisterForRemoteNotificationsWithDeviceToken? [英] When is didRegisterForRemoteNotificationsWithDeviceToken called?

问题描述

有很多关于 didRegisterForRemoteNotificationsWithDeviceToken 的问题，但他们都回避了一个非常直接的问题，我似乎找不到确切的答案.

There are a lot of questions about didRegisterForRemoteNotificationsWithDeviceToken but they all sidestep a very direct question which I cannot seem to find an exact answer to.

对于以所有其他方式正确设置通知并具有适当网络连接的应用程序:什么时候调用 didRegisterForRemoteNotificationsWithDeviceToken?一些可能的选择可能是:

For an app which is properly set up for notifications in all other ways and has proper network connectivity: when is didRegisterForRemoteNotificationsWithDeviceToken called? Some possible choices might be:

1. 每次应用启动时
2. 仅在初始提示用户接受推送通知后
3. 还有别的吗?

推荐答案

在你的UIApplication中调用该方法后，应用委托会在远程通知注册成功后调用该方法:

The application delegate will call the method upon successful registration of remote notification after you call this method in your UIApplication:

(void)registerForRemoteNotificationTypes:(UIRemoteNotificationType)types

(void)registerForRemoteNotificationTypes:(UIRemoteNotificationType)types

根据:http://developer.apple.com/library/ios/#DOCUMENTATION/UIKit/Reference/UIApplication_Class/Reference/Reference.html

当您发送此消息时，设备会启动 Apple Push Service 的注册过程.如果成功，应用程序委托会在 application:didRegisterForRemoteNotificationsWithDeviceToken: 方法中收到一个设备令牌；如果注册不成功，则通过 application:didFailToRegisterForRemoteNotificationsWithError: 方法通知委托人.如果应用程序委托收到设备令牌，它应该与其提供者连接并将令牌传递给它.

When you send this message, the device initiates the registration process with Apple Push Service. If it succeeds, the application delegate receives a device token in the application:didRegisterForRemoteNotificationsWithDeviceToken: method; if registration doesn’t succeed, the delegate is informed via the application:didFailToRegisterForRemoteNotificationsWithError: method. If the application delegate receives a device token, it should connect with its provider and pass it the token.

现在，进一步详细说明，通常应用程序会在您的应用程序委托中的 didFinishLaunchingWithOptions:(NSDictionary *)launchOptions 中调用 registerForRemoteNotificationTypes.因此，application:didRegisterForRemoteNotificationsWithDeviceToken 通常会在应用程序启动后立即调用.

Now, to elaborate further, normally an app will call the registerForRemoteNotificationTypes in your didFinishLaunchingWithOptions:(NSDictionary *)launchOptions in your application delegate. And therefore, the application:didRegisterForRemoteNotificationsWithDeviceToken is then usually called moments after the launch of the application.

application:didRegisterForRemoteNotificationsWithDeviceToken 在第一次之后仍然会被调用以进行后续注册.

The application:didRegisterForRemoteNotificationsWithDeviceToken still gets called for subsequents registration after the first.

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