ios - iOS 10[ objective-c ]如何实现推送通知？

Question

任何人都可以帮助我实现 iOS 10 的推送通知，因为我已经实现了以下代码但仍然遇到问题:

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

if(SYSTEM_VERSION_GRATERTHAN_OR_EQUALTO(@"10.0"))
{
    UNUserNotificationCenter *center = [UNUserNotificationCenter currentNotificationCenter];
    center.delegate = self;
    [center requestAuthorizationWithOptions:(UNAuthorizationOptionSound | UNAuthorizationOptionAlert | UNAuthorizationOptionBadge) completionHandler:^(BOOL granted, NSError * _Nullable error){
        if(!error){
            [[UIApplication sharedApplication] registerForRemoteNotifications];
        }
    }];
}
else {
    // Code for old versions
}

我收到错误提示

Unknown receiver UIUserNotificationCenter

提前致谢!

Answer 1

抱歉各位，我得到答案了。我只需要导入 UserNotifications 框架。

#import <UserNotifications/UserNotifications.h>