我是Objective-C的新手,所以这可能是一个简单的问题:
在初始化位置之后:
CLLocation *currentPoint = [[CLLocation alloc] initWithLatitude:0 longitude:0]:
如何在之后更改纬度和经度?
我是Objective-C的新手,所以这可能是一个简单的问题:
在初始化位置之后:
CLLocation *currentPoint = [[CLLocation alloc] initWithLatitude:0 longitude:0]:
这里有一个修改 CLLocation 的示例:
- (void)locationManager:(CLLocationManager *)manager
didUpdateToLocation:(CLLocation *)newLocation
fromLocation:(CLLocation *)oldLocation{
newLocation = [[[CLLocation alloc] initWithCoordinate:CLLocationCoordinate2DMake(newLocation.coordinate.latitude, -1.1874988592864875)
altitude:newLocation.altitude
horizontalAccuracy:newLocation.horizontalAccuracy
verticalAccuracy:newLocation.verticalAccuracy
timestamp:newLocation.timestamp] autorelease];
这里是另一个创建新CLLotation的示例:
CLLocation *newLocation = [[[CLLocation alloc] initWithCoordinate:CLLocationCoordinate2DMake(41.44994138650804, -1.1874988592864875)
altitude:0
horizontalAccuracy:0
verticalAccuracy:0
timestamp:[NSDate date]] autorelease];
CLLocation
对象是不可变的(您无法更改它们)。根据文档:
通常,您使用 CLLocationManager 对象基于用户设备的上次已知位置创建此类的实例。但是,如果您想缓存自定义位置数据或获取两个不同坐标点之间的距离,则可以自己创建实例。