iOS10的远程推送

1. 注册权限的方法改变了: UNUserNotificationCenter -- requestAuthorizationWithOptions
2. 处理(接收)通知的方法变了:
   2.1 设置代理 --> 代理有2个新方法
   2.2 willPresentNotification: 前台运行 会调用的方法
   iOS10之前, 在前台运行时, 不会出现通知的横幅. iOS10会出现横幅
   2.3 didReceiveNotificationResponse: 后台运行及程序退出 会调用的方法
   本地推送前后台都会调用此方法
   2.4 didReceiveRemoteNotification: iOS10只能处理静默推送 (willPresentNotification方法如果不实现, 也可以处理前台)
   iOS10之前, 前台/后台/退出/静默推送都可以处理

静默推送 --> iOS7以后出现, 不会出现提醒及声音
可以在收到推送的时候, 自己先执行一段代码, 再提醒用户

1. 推送的payload中不能包含alert及sound字段
2. 需要添加content-available字段, 并设置值为1

iOS什么时候有了真正的后台多任务: iOS7
静默推送处理完毕, 如果想让用户知道. 你需要自己发送一个本地通知

    // 注册推送通知--ios10以前
    UIUserNotificationSettings *settings = [UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeBadge | UIUserNotificationTypeSound | UIUserNotificationTypeAlert categories:nil];

[[UIApplication sharedApplication] registerUserNotificationSettings:settings];

    // 注册推送通知--ios10之后
//iOS10 ,本地推送和远程推送的  注册推送通知的代码一样
    UNUserNotificationCenter *center = [UNUserNotificationCenter currentNotificationCenter];
    
    [center requestAuthorizationWithOptions:UNAuthorizationOptionBadge | UNAuthorizationOptionSound | UNAuthorizationOptionAlert  completionHandler:^(BOOL granted, NSError * _Nullable error) {
        if (error) {
            NSLog(@"授权失败%@:", error);
        }
        else{
            NSLog(@"授权成功");
        }
    }];
    
    center.delegate = self;//为了实现新的代理方法


新的三个代理方法如下:

// 前台运行 会调用的方法
- (void)userNotificationCenter:(UNUserNotificationCenter *)center willPresentNotification:(UNNotification *)notification withCompletionHandler:(void (^)(UNNotificationPresentationOptions))completionHandler{
    
    NSDictionary *userInfo = notification.request.content.userInfo;
    NSLog(@"%@",userInfo);
    
    //加lable调试
    UILabel *lable = [UILabel new];
    lable.backgroundColor = [UIColor redColor];
    lable.frame = CGRectMake(50, 50, 300, 300);
    lable.text = userInfo.description;
    lable.numberOfLines = 0;
    [[UIApplication sharedApplication].keyWindow addSubview:lable];

    completionHandler(UNNotificationPresentationOptionBadge | UNNotificationPresentationOptionSound | UNNotificationPresentationOptionAlert);
    
}

//后台运行及程序退出 会调用的方法,
//本地推送前后台都会调用此方法
- (void)userNotificationCenter:(UNUserNotificationCenter *)center didReceiveNotificationResponse:(UNNotificationResponse *)response withCompletionHandler:(void (^)())completionHandler{
    
    NSString *actionStr = response.actionIdentifier;
    NSLog(@"actionStr = %@", actionStr);
    
    NSDictionary *userInfo = response.notification.request.content.userInfo;
    NSLog(@"%@",userInfo);
    
    //加lable调试
    UILabel *lable = [UILabel new];
    lable.backgroundColor = [UIColor yellowColor];
    lable.frame = CGRectMake(50, 50, 300, 300);
    lable.text = userInfo.description;
    lable.numberOfLines = 0;
    [[UIApplication sharedApplication].keyWindow addSubview:lable];
    
    completionHandler();
    
}

//iOS10只能处理静默推送 (willPresentNotification方法如果不实现, 也可以处理前台)
//iOS10之前, 前台/后台/退出/静默推送都可以处理
- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo fetchCompletionHandler:(void (^)(UIBackgroundFetchResult))completionHandler{
    
    //加lable调试
    UILabel *lable = [UILabel new];
    lable.backgroundColor = [UIColor greenColor];
    lable.frame = CGRectMake(50, 50, 300, 300);
    lable.text = userInfo.description;
    lable.numberOfLines = 0;
    [[UIApplication sharedApplication].keyWindow addSubview:lable];
    
    completionHandler(UIBackgroundFetchResultNewData);
}