在CLLocationDistance中从Km到Miles的转换

Question

我现在有这个设置，我想改变从公里到迈尔斯在计算距离。以下是我的当前代码：

CLLocation *userloc = [[CLLocation alloc] initWithLatitude:locationManager.location.coordinate.latitude longitude:locationManager.location.coordinate.longitude];
CLLocation *loc = [[CLLocation alloc] initWithLatitude:lat longitude:lon];

CLLocationDistance distance2 = [userloc distanceFromLocation:loc]/ 1000;
NSLog(@"%f",distance2);

[distance setText:[NSString stringWithFormat:@"%.2f km", distance2]];
}

Answer 1

这是一个简单的转换：

CLLocationDistance distance2 = [userloc distanceFromLocation:loc] * 0.000621371;
NSLog(@"%f",distance2);

[distance setText:[NSString stringWithFormat:@"%.2f mi", distance2]];