Install react-native-geolocation-service and create Obj-C bridging header
Show current position to full-screen map
CAUTION
YOU MUST ADD FOLLOW TEXT TO"ios/Hanchelin_Guide/Info.plist":
<key>NSLocationWhenInUseUsageDescription</key><string>서비스 동작을 위해 위치 정보가 필요합니다</string>
YOU MUST ADD FOLLOW TEXT TO"android/app/src/main/AndroidManifest.xml":
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" /><uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
you should add Capabillity on Xcode and check Background Modes, then check Location updates from Background Modes tap.
CAUTION
<key>NSLocationWhenInUseUsageDescription</key><string>서비스 동작을 위해 위치 정보가 필요합니다</string><uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" /><uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />