Calculate distance of MKPolyline path?

问题

I would like to get the meters of a MKPolyline path so I can tell the user what are the meters left to finish the path.

I've been searching for something to do it but I couldn't get anything.

Thanks.

回答1:

As tedious as it sounds, unless you want to do the maths yourself you're probably going to have to iterate thought the line's points, convert each to a CLLocation and use its -distanceFromLocation: between each, summing up to the appropriate total.

来源：https://stackoverflow.com/questions/14789706/calculate-distance-of-mkpolyline-path