小编Sin*_*ina的帖子

我正在尝试创建然后检索CLLocationCoordinate2D对象的数组,但由于某种原因,该数组始终为空.

我有:

NSMutableArray *currentlyDisplayedTowers;
CLLocationCoordinate2D new_coordinate = { currentTowerLocation.latitude, currentTowerLocation.longitude };
[currentlyDisplayedTowers addObject:[NSData dataWithBytes:&new_coordinate length:sizeof(new_coordinate)] ];

我也试过这个来添加数据:

[currentlyDisplayedTowers addObject:[NSValue value:&new_coordinate withObjCType:@encode(struct CLLocationCoordinate2D)] ];

无论哪种方式,[currentDisplayedTowers count]总是返回零.什么想法可能会出错？

谢谢!