Question

对于iOS＆gt; = 8，仅

在我的AppDelegate中，我按如下方式注册用户通知：

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    NSLog(@"didFinishLaunchingWithOptions called");

    // iOS >= 8.0

    // register to receive user notifications
    [[UIApplication sharedApplication] registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:(UIUserNotificationTypeSound | UIUserNotificationTypeAlert | UIUserNotificationTypeBadge) categories:nil]];

    ...
}

完成后，我按如下方式注册远程通知：

- (void)application:(UIApplication *)application  didRegisterUserNotificationSettings:(UIUserNotificationSettings *)notificationSettings
{
    NSLog(@"didRegisterUserNotificationSettings called");

    //register to receive remote notifications
    [application registerForRemoteNotifications];
}

完成后，我会检查该应用是否已注册

- (void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken {

    NSLog(@"didRegisterForRemoteNotificationsWithDeviceToken called");

    BOOL pushNotificationOnOrOff = [[UIApplication sharedApplication] isRegisteredForRemoteNotifications]; // always returns TRUE
}

但是，即使用户已明确设置应用的远程通知功能（通过首次安装应用后显示的通知权限提醒，或通过应用设置），应用也始终指示已启用推送通知。

我已将应用的背景模式/远程通知设置为TRUE。我一直在使用开发证书编译的实际设备（通过USB电缆连接）进行调试。

帮助，我几个小时都在争吵。

Answer 1

这似乎是一个错误，我也在iPhone 6，iOS 8.1.2上发现了相同的行为。

即使用户拒绝推送通知权限（通过提醒视图），也可以通过[[UIApplication sharedApplication] isRegisteredForRemoteNotifications]手动停用通知，

TRUE始终返回Settings.app > Notifications。

经过一些研究后，我发现如果您为该应用启用了Background App Refresh，则[[UIApplication sharedApplication] isRegisteredForRemoteNotifications]将始终返回TRUE。

当Background App Refresh设置为FALSE时，[[UIApplication sharedApplication] isRegisteredForRemoteNotifications]会返回正确的值。

作为一种变通方法，您可以评估[[UIApplication sharedApplication] currentUserNotificationSettings].types以确定是否允许推送通知。

typedef NS_OPTIONS(NSUInteger, UIUserNotificationType) {
    UIUserNotificationTypeNone    = 0,      // the application may not present any UI upon a notification being received
    UIUserNotificationTypeBadge   = 1 << 0, // the application may badge its icon upon a notification being received
    UIUserNotificationTypeSound   = 1 << 1, // the application may play a sound upon a notification being received
    UIUserNotificationTypeAlert   = 1 << 2, // the application may display an alert upon a notification being received
} NS_ENUM_AVAILABLE_IOS(8_0);

希望这有帮助。

始终启用iOS 8+远程通知功能

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