Solution for repairing the display location button on Android within a React Native Map

I am facing an issue with the Location Button in my React Native Maps app. When the app is opened for the first time and the map is rendered, the button disappears. However, if I close the app but leave it running in the background, upon reopening the app, the button appears as expected like in this GIF:

Link: https://i.sstatic.net/x0xLa.jpg

Note:

I have come across similar issues in the main repository of React Native Maps, but the solutions provided did not work for me.

Another question:

The app did not prompt me to enable GPS location services upon the first launch, it only worked after manually opening them. I am using an Android 8 device.

Here is a snippet of my code:

import React, { Component } from 'react';
import MapView, { Marker } from 'react-native-maps';
import { View, Text, StyleSheet, Dimensions } from 'react-native';

let { width, height } = Dimensions.get('window');

const LATITUDE = 31.78825;
const LONGITUDE = 34.4324;
const LATITUDE_DELTA = 0.0922;
const LONGITUDE_DELTA = 0.0421;

// rest of the code remains unchanged

export default Map;

Answer №1

Although this question is dated, I felt compelled to provide a solution for fixing the bug on the android platform.

Here are two methods to resolve this issue:

  1. Create a custom button and use animateToRegion onPress to navigate to the user's location.
  2. The reason why the button reappears after reopening the app is because of repaint/rerendering (which effectively resolves the problem). In essence, triggering a rerender will display the button again.

Sample code snippet to illustrate the concept:

constructor(props) {
   super(props);
   this.state = {
       bottomMargin: 1,
   };
 }
 <MapView
      showsUserLocation
      style={{
        marginBottom: this.state.bottomMargin,             // utilizing state in styling
        ...StyleSheet.absoluteFillObject,
      }}
      region={this.state.region}
      onRegionChangeComplete={this.onRegionChange}
      onMapReady={() => this.setState({ bottomMargin: 0 })} // this function executes once the map is ready

 />

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