WPD-MobileApp/src/app/screens/MapFeedScreen.js

import React from "react";
import { StyleSheet, View } from "react-native";
import MapView from "react-native-maps";

import colors from "../config/colors";

import useLocation from "../hooks/useLocation";
import useMarkers from "../hooks/selectFromDB";
import MapMarker from "../components/MapMarker";

function MapFeedScreen(props) {
  const location = useLocation({
    latitude: -22.1070263,
    longitude: -51.3948396,
  });

  const markers = useMarkers();

  return (
    <View style={styles.container}>
      <MapView
        style={styles.mapStyle}
        initialRegion={{
          latitude: -22.1070263,
          longitude: -51.3948396,
          latitudeDelta: 0.0922,
          longitudeDelta: 0.0421,
        }}
        region={{
          latitude: location["latitude"],
          longitude: location["longitude"],
          latitudeDelta: 0.0922,
          longitudeDelta: 0.0421,
        }}
      >
        {[...markers.markers].map(({ ID, ...val }) => {
          return <MapMarker key={ID.toString()} {...val} />;
        })}
      </MapView>
    </View>
  );
}

const styles = StyleSheet.create({
  container: {
    backgroundColor: colors.black,
    flex: 1,
  },
  mapStyle: {
    position: "absolute",
    top: 0,
    left: 0,
    right: 0,
    bottom: 0,
  },
});

export default MapFeedScreen;