为什么 distanceFromLocation: 方法返回一个荒谬的数字答案

【问题标题】：Why is the distanceFromLocation: method returning a ridiculous number为什么 distanceFromLocation: 方法返回一个荒谬的数字
【发布时间】：2014-11-20 21:37:08
【问题描述】：

我正在尝试计算并返回两点之间的距离，但我得到了一个荒谬的数字。我已经尝试了用户定义的 hasrsine 方法和 distanceFromLocation 方法，它们都返回 10282657.652... lat = 32.60641072/lon = -85.48713530 和 lat = 32.605638 和 lon = -85.486890 之间的距离。这些距离是不是太近了？

CLLocation *startLocation = [[CLLocation alloc] initWithLatitude:currentLocation.coordinate.latitude      longitude:currentLocation.coordinate.latitude];

    CLLocation *endLocation = [[CLLocation alloc] initWithLatitude:_head.lattitude  longitude:_head.longitude];
    double distance = [startLocation distanceFromLocation:endLocation];
    CLLocationCoordinate2D newCoordinate = [startLocation coordinate];
    CLLocationCoordinate2D oldCoordinate = [endLocation coordinate];
    double distance2 = [self distanceFrom:newCoordinate to:oldCoordinate];
    NSNumber *myDoubleNumber = [NSNumber numberWithDouble:distance2];

    _charLabel.text = [myDoubleNumber stringValue];

【问题讨论】：

可能是因为对于startLocation，代码将latitude 传递给longitude 参数。
我是个白痴。这是我检查的第一件事，完全错过了。谢谢！！！！！！

标签： ios gps

【解决方案1】：

CLLocation *location1 = [[CLLocation alloc] initWithLatitude:lat1 longitude:lon1];
CLLocation *location2 = [[CLLocation alloc] initWithLatitude:lat2 longitude:lon2];
CLLocationDistance distance= [location1 distanceFromLocation:location2]*1.09361;

“距离”将返回仪表。这段代码对我有用:)

【讨论】：