关于iOS8中用户接受推送通知（以及徽章等通知）的变化的两个问题 .
1) I am using the current approach which is working fine both on iOS7 and iOS8
if ([[[UIDevice currentDevice] systemVersion] floatValue]>= 8.0) {
UIUserNotificationSettings *settings = [UIUserNotificationSettings settingsForTypes:
(UIUserNotificationTypeBadge|UIUserNotificationTypeSound|UIUserNotificationTypeAlert)
categories:nil];
[[UIApplication sharedApplication] registerUserNotificationSettings:settings];
[[UIApplication sharedApplication] registerForRemoteNotifications];
} else {
[[UIApplication sharedApplication] registerForRemoteNotificationTypes:
(UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeSound | UIRemoteNotificationTypeAlert)];
}
这完全起作用，因为推送和警报正在工作，我在didRegister委托方法中获得了令牌，但我从未被问过弹出窗口，因为它曾经是这种情况 . 即使我从手机中删除了应用程序？为什么？操作系统是否会保留应用程序的内存隐私设置，即使它们已被删除？
2) I saw some people suggesting to ask for remote notifications in the following delegate
- (void)application:(UIApplication *)application didRegisterUserNotificationSettings:(UIUserNotificationSettings *)notificationSettings
{
NSLog(@"registered for notifications settings %@",notificationSettings);
//register to receive notifications
[application registerForRemoteNotifications];
}
Why that ?
1 回答
From document ，
- (void)application:(UIApplication *)application didRegisterUserNotificationSettings:(UIUserNotificationSettings *)notificationSettings此方法回调将在调用时进行 -[UIApplication registerUserNotificationSettings:]. 用户授予应用程序的设置将作为第二个参数传入 . 这意味着，一旦我们获得用户权限（或者如果我们之前已经获得），则此方法将调用，我们可以通过调用[application registerForRemoteNotifications]来注册应用程序以进行远程通知 .