how to change address geocoding in react native?

送分小仙女□ 提交于 2021-02-11 14:51:23

问题


I use react-native-maps, react-native-gecoding and react-native-geolocation-service, I have a problem when the maps move the marker doesn't move as well as the address that gets from the geocoder doesn't change, the address should change because of longitude and latitude This changes, even though I have set longitude and latitude to state, how do I make the marker move and the address changes when the user moves / clicks the marker?

this is my code

const [coordinate, setCoordinate] = useState({
 longitude: 106.7391473,
 latitude: -6.2731662,
 longitudeDelta: 0,
 latitudeDelta: 0
})

const _handleCoordinate = () => {
  Geolocation.getCurrentPosition(
   (position) => {
    console.log(position.coords)
    setCoordinate({
      ...coordinate,
      longitude: position.coords.longitude,
      latitude: position.coords.latitude,
      longitudeDelta: position.coords.longitude,
      latitudeDelta: position.coords.latitude
    })
    Geocoder.init(APIKEY)
    Geocoder.from(position.coords.latitude, position.coords.longitude)
      .then(json => {
         var addressComponent = json.results[0].formatted_address
            setAddress(addressComponent)
        })
      },
      (error) => {
        setError(error.message)
        console.log(error.code, error.message)
      },
      { enableHighAccuracy: true, timeout: 15000, maximumAge: 10000 }
    )
    setLoading(false)
}

return (
    <View style={{ flex: 1, height: windowHeight }}>
      <Header
        title='gunakan lokasi saat ini'
        type='close'
        onPress={() => navigation.navigate('CurrentLocation')}
      />
      <View style={{ flex: 1, backgroundColor: 'white' }}>
        <View style={styles.container}>
          <MapView
            style={styles.map}
            initialRegion={coordinate}
            showsUserLocation={true}
            showsMyLocationButton={true}
            zoomEnabled={true}
            zoomTapEnabled={true}
            zoomControlEnabled={true}
            maxZoomLevel={15}
            onPress={_handleCoordinate}
          >
            <Marker
              coordinate={{
                latitude: coordinate.latitude,
                longitude: coordinate.longitude
              }}
            />
          </MapView>
        </View>
        <View style={styles.sectionBottom}>
          {loading ? (
            <Text>Loading...</Text>
          ) : (
            <View>
              <Text style={{ marginBottom: 16, flex: 1 }}>
                {address}
              </Text>
              <TouchableOpacity style={styles.stwmBtnDefault}>
                <Text style={styles.textButton}>Terapkan Lokasi</Text>
              </TouchableOpacity>
            </View>
          )}
        </View>
      </View>
    </View>
  )

来源:https://stackoverflow.com/questions/63514592/how-to-change-address-geocoding-in-react-native

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