RegisterUserNotificationSettings不在IOS6.1中工作

Question

在我的项目中，我使用Parse进行推送通知。我在didFinishLaunchingWithOptions:中添加了parse.com提供的代码

UIUserNotificationType userNotificationTypes = (UIUserNotificationTypeAlert |
                                                UIUserNotificationTypeBadge |
                                                UIUserNotificationTypeSound);
UIUserNotificationSettings *settings = [UIUserNotificationSettings settingsForTypes:userNotificationTypes
                                                                         categories:nil];


[application registerUserNotificationSettings:settings];
[application registerForRemoteNotifications];

如果设备或模拟器版本为iOS 8，则其工作正常，但在iOS 6.1中不能工作，并且出现消息

[UIApplication registerUserNotificationSettings:]: unrecognized selector sent to instance 0x208406c0

有人能告诉我怎么解决吗？

Answer 1

在didFinishLaunchingWithOptions方法中使用此代码它是在ios 6和7中工作的

[application registerForRemoteNotificationTypes:
         (UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeAlert | UIRemoteNotificationTypeSound)];

如果您想在所有情况下都在ios 6、7、8中工作，那么在didFinishLaunchingWithOptions中使用以下代码

 if ([application respondsToSelector:@selector(isRegisteredForRemoteNotifications)])
    {
        // iOS 8 Notifications
        [application registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:(UIUserNotificationTypeSound | UIUserNotificationTypeAlert | UIUserNotificationTypeBadge) categories:nil]];

        [application registerForRemoteNotifications];
    }
    else
    {
        // iOS < 8 Notifications
        [application registerForRemoteNotificationTypes:
         (UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeAlert | UIRemoteNotificationTypeSound)];
    }

Answer 2

对于iOS8：

if ([application respondsToSelector:@selector(registerUserNotificationSettings:)]) {
    UIUserNotificationSettings* notificationSettings = [UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeAlert | UIUserNotificationTypeBadge | UIUserNotificationTypeSound categories:nil];
    [[UIApplication sharedApplication] registerUserNotificationSettings:notificationSettings];
    [[UIApplication sharedApplication] registerForRemoteNotifications];
} else {
    [[UIApplication sharedApplication] registerForRemoteNotificationTypes: (UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeSound | UIRemoteNotificationTypeAlert)];
}