解析- PFObject -属性

Question

如何通过方法获取createdAt，updatedAt的值？

PFObject gameScore = [PFObject objectWithClassName:@"GameScore"]; 
NSString playerName = gameScore[@"playerName"];

而不是这样做：

NSDate updatedAt = gameScore.updatedAt; 
NSDate createdAt = gameScore.createdAt;

像我在playerName中做的那样：

NSDate *updatedAt = gameScore[@"updatedAt"];

Answer 1

updateAt是PFObject的属性。假设object是PFObject的一个实例。只需执行以下操作：

NSDate *updated = [object updatedAt];

有关更多信息，请访问See here。

希望这能帮上忙..:)

Answer 2

但是在这种情况下我没有PFObject！我正在执行一个查询，以获取我的类'boteco‘的值，并且我将带有信息的pin添加到我的mapView中

PFQuery *query = [PFQuery queryWithClassName:@"boteco"];
    [query findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error)
    {
        if (!error)
        {
            mapArray = [objects copy];
            for (int i=0; i<objects.count; i++)
            {
                latitude = [[[mapArray objectAtIndex:i] valueForKey:@"latitude"] floatValue];
                longitude = [[[mapArray objectAtIndex:i] valueForKey:@"longitude"] floatValue];
                nome = [[mapArray objectAtIndex:i] valueForKey:@"nome"];
                // I want here to take the value of "updatedAt" ex: uptadedAt=[[[mapArray objectAtIndex:i] valueForKey:@"updatedAt"];
                CLLocationCoordinate2D coord = { latitude, longitude };
                DisplayMap *ann = [[DisplayMap alloc] init];
                ann.coordinate = coord;
                [mapview addAnnotation:ann];
            }
        }