iOS:有没有办法知道用户是否选择退出通知？

Question

有了 CLAuthorizationStatus，我可以确切地知道用户是否拒绝了应用程序权限(kCLAuthorizationStatusDenied)或者状态是否未确定(kCLAuthorizationStatusNotDetermined) .

...那么通知服务是否有类似的东西？我似乎找不到任何东西，而且似乎无法区分拒绝权限的用户和尚未显示权限弹出窗口的用户。

Answer 1

if ([[[UIDevice currentDevice]systemVersion]floatValue] >= 8.0) {
    UIUserNotificationSettings *current = [[UIApplication   sharedApplication]currentUserNotificationSettings];
    if (current.types != UIUserNotificationTypeNone){
        NSLog(@"Notifications Enabled ios 8");
    } else {
        NSLog(@"Notifications not Enabled ios 8");
    }

} else {
    UIRemoteNotificationType types = [[UIApplication sharedApplication]enabledRemoteNotificationTypes];
    if (types != UIRemoteNotificationTypeNone)
    {
        NSLog(@"Notifications Enabled");
    }
    else
    {
        NSLog(@"Notifications not Enabled");
    }
}