51CTO HarmonyOS Developer Community

Aug 24, 2026 · Mobile Development

HarmonyOS 7 Reverse Geocoding Empty Result? Fix GCJ02 to WGS84 Conversion

This article solves a HarmonyOS 7 issue where getAddressesFromLocation returns an empty array without errors, revealing the root cause is a coordinate system mismatch: Map Kit provides GCJ02 coordinates while the geocoding API requires WGS84, and provides a conversion algorithm and complete implementation.