如何使用enabledRemoteNotificationTypes更新代码，因为它在iOS 8＆＃34;中不受支持？

Question

这是我用于RemoteNotificationType的代码：

NSUInteger rntypes = [[UIApplication sharedApplication] enabledRemoteNotificationTypes];

我得到的错误是：

  

2014-09-29 15：46：47.416 Dummy [258：21766]在iOS 8.0及更高版本中不支持enabledRemoteNotificationTypes。

如果有人能给我解决方案，那将是一个很好的帮助。

Answer 1

您也可以使用此代码：

if ([[UIApplication sharedApplication] respondsToSelector:@selector(currentUserNotificationSettings)]) {

    UIUserNotificationType types = [[[UIApplication sharedApplication] currentUserNotificationSettings] types];

    if (types == UIUserNotificationTypeNone) {
        // Do something
    }

} else {

    UIRemoteNotificationType types = [[UIApplication sharedApplication] enabledRemoteNotificationTypes];

    if (types == UIRemoteNotificationTypeNone) {
        // Do something
    }
}

如果您只想检查用户是否已注册远程通知，请使用此选项：

if ([[UIApplication sharedApplication] respondsToSelector:@selector(isRegisteredForRemoteNotifications)]) {

    BOOL isRegisteredForRemoteNotifications = [[UIApplication sharedApplication] isRegisteredForRemoteNotifications];

    if (isRegisteredForRemoteNotifications) { 
        // Do something
    }

} else {

    UIRemoteNotificationType types = [[UIApplication sharedApplication] enabledRemoteNotificationTypes];

    if (types == UIRemoteNotificationTypeNone) {
        // Do something
    }
}

Answer 2

使用此条件在iOS 7和之前的iOS 8中提供支持

#define SYSTEM_VERSION_LESS_THAN(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedAscending)

NSUInteger rntypes;
  if (!SYSTEM_VERSION_LESS_THAN(@"8.0")) {
   rntypes = [[[UIApplication sharedApplication] currentUserNotificationSettings] types];
}else{
   rntypes = [[UIApplication sharedApplication] enabledRemoteNotificationTypes];
}

Answer 3

请使用以下方法 -

[[UIApplication sharedApplication] isRegisteredForRemoteNotifications]

或

[[UIApplication sharedApplication] currentUserNotificationSettings]

在iOS 8中检索启用了用户的远程通知和用户通知设置。