只是一个关于核心位置的快速问题，我正在尝试计算两点之间的距离，代码如下:
-(void)locationChange:(CLLocation *)newLocation:(CLLocation *)oldLocation
{
// Configure the new event with information from the location.
CLLocationCoordinate2D newCoordinate = [newLocation coordinate];
CLLocationCoordinate2D oldCoordinate = [oldLocation coordinate];
CLLocationDistance kilometers = [newCoordinate distanceFromLocation:oldCoordinate] / 1000; // Error ocurring here.
CLLocationDistance meters = [newCoordinate distanceFromLocation:oldCoordinate]; // Error ocurring here.
}
我在最后两行收到以下错误:
error: cannot convert to a pointer type
我一直在谷歌上搜索，但找不到任何东西。
最佳答案
试试这个:
CLLocationDistance meters = [newLocation distanceFromLocation:oldLocation];
您尝试使用的方法是 CLLocation 上的方法对象:)
关于ios - distanceFromLocation - 计算两点之间的距离，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/3905896/