Что думаешь? Оцени!
Copyright © ITmedia, Inc. All Rights Reserved.
，这一点在新收录的资料中也有详细论述
The answer: OsmAnd's custom-built Highway Hierarchy (HH) Routing. This isn't your standard routing engine; it's a ground-up redesign, meticulously engineered to overcome the unique challenges of providing advanced navigation on compact, offline-first map data.
Enterprise-grade technology at a low cost for SMBs