ios - 部署目标 iOS8 但希望支持 iOS7 - 弃用警告

Question

我有一个应用程序，我想以新的 iOS 8.1 为目标，但我也希望拥有 iOS 7 的人能够使用我的应用程序。因此，例如对于我的推送通知，在我的应用程序委托(delegate)中我有

    if ([application respondsToSelector:@selector(registerUserNotificationSettings:)]) {
    UIUserNotificationType userNotificationTypes = (UIUserNotificationTypeAlert |
                                                    UIUserNotificationTypeBadge |
                                                    UIUserNotificationTypeSound);
    UIUserNotificationSettings *settings = [UIUserNotificationSettings settingsForTypes:userNotificationTypes
                                                                             categories:nil];
    [application registerUserNotificationSettings:settings];
    [application registerForRemoteNotifications];
} else {
    // Register for Push Notifications before iOS 8
    [application registerForRemoteNotificationTypes:(UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeAlert |
        UIRemoteNotificationTypeSound)];
}

要为 iOS 8 和 iOS 7 打开推送通知，但是当我更改我的部署目标时，我收到警告说这已被弃用:

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

处理此问题的最佳方法是什么？对于提交到应用商店以及我个人而言，我不喜欢在我的代码中看到警告。

提前感谢您的帮助。

编辑

这是一张警告图片 我看到我的部署目标是 iOS8.1 并且不确定在哪里可以找到我的基础 SDK？这是图片:

Answer 1

按照 orkenstein 所述更改您的代码:

if ([application respondsToSelector:@selector(registerForRemoteNotificationTypes:)])
{

    UIUserNotificationType userNotificationTypes = (UIUserNotificationTypeAlert |
                                                    UIUserNotificationTypeBadge |
                                                    UIUserNotificationTypeSound);
    UIUserNotificationSettings *settings = [UIUserNotificationSettings settingsForTypes:userNotificationTypes
                                                                             categories:nil];
    [application registerUserNotificationSettings:settings];
    [application registerForRemoteNotifications];
}
else
{
    [application registerForRemoteNotificationTypes:(UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeAlert |
                                                     UIRemoteNotificationTypeSound)];
}

接下来调整你的build设置
将基础 SDK 设置为最新:

...向下滚动到部署并将部署目标设置为 7.0:

请注意，通过更改此处的设置，您可以(几秒钟后)直接看到正在打开和关闭的警告

目标 = iOS 8.x

目标 = iOS 7.x

请忽略 SplashScreen 警告 ...