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

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

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

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

function MapFeedScreen(props) {
  const location = useLocation();
  const markers = useMarkers();

  console.log(markers.markers);

  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((val) => {
          return <MapView.Marker {...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;