How To Integrate Google Maps Into An App

Navigating the modern world often requires more than just directions; it demands a seamless and interactive mapping experience.

In an era where location-based services have become integral to countless applications, integrating powerful mapping tools has become a fundamental need for developers. Among the great number of mapping services available, Google Maps stands tall as a reliable and feature-rich platform.

Whether you're creating a travel app, a food delivery service, or even a fitness application, harnessing the potential of Google Maps can elevate your user experience to unprecedented heights.

In this blog post, we will delve into the essential steps and best practices on how to integrate Google Maps into app, unlocking the doors to a world of location-based possibilities. So, let's learn how to integrate Google Maps into an app and transform your application into a navigational powerhouse!

How To Integrate Google Maps Into Your Application?

Back-end Development for Google Maps Integration

Whether you're building a location-based app, a delivery service, or a real estate platform, incorporating Google Maps into your application can significantly enhance user experience. Integrating Google Maps into app isn't overly complex, but it does require a solid understanding of back-end programming, specifically in Java. Let's break down the step-by-step process.

Before delving into the programming specifics, you'll need to get a Google Maps API key. This key is unique to your application and allows Google to authenticate your app's requests.

• Visit the Google Cloud Platform Console (https://cloud.google.com/console).
• Create a new project or select an existing one.
• Navigate to "APIs & Services" -> "Credentials".
• Click "Create credentials" -> "API key".
• After creating, copy the API key for later use.

To integrate Google Maps into app on the backend, you need the Java client library for Google Maps API Web Services. Here's how to set it up.

Add the following Maven dependency in your pom.xml:

<dependency>
 <groupId>com.google.maps</groupId>
 <artifactId>google-maps-services
  <version>(latest version)</version>
</dependency>

Now, initialize the GeoApiContext:

GeoApiContext context = new GeoApiContext.Builder()
    .apiKey("YOUR_API_KEY")
    .build();

Replace "YOUR_API_KEY" with your actual API key. This context enables you to access various Google Maps services such as Geocoding, Directions, and Places.

Let's assume you want to add geocoding to your application. Use the GeocodingApi class:

 GeocodingResult[] results =  GeocodingApi.geocode(context, "1600 Amphitheatre Parkway Mountain View, CA 94043").await();

This code will convert the address to its latitude and longitude. You can use the .lat and .lng properties on results[0].geometry.location to get these values.

While integrating Google Maps into your application may seem like a daunting task, a step-by-step approach can simplify the process. With a clear understanding of your requirements and careful implementation, you can add useful features to your app that can greatly improve user experience. Remember to adhere to Google's usage policies and secure your API keys appropriately to prevent misuse.

Front-end Development for Google Maps Integration

Google Maps adds significant value to your web application by providing a map view of a specific area. How to integrate Google Maps into an app in terms of the front end? This integration offers several benefits regarding the front end:

• Better user experience: The familiar and intuitive interface of Google Maps enhances website navigation and interaction for users who have already used this tool.
• Easy location identification: Businesses with physical locations can show their addresses to potential customers, enabling them to observe the nearby area.
• Responsiveness: Google Maps is accessible and responsive on mobile devices, catering to the growing number of mobile users and increasing the website's reach and usability.

Since many modern web projects are built using the React framework, let’s follow the instructions on integrate Google Maps into app based on React:

Step 1. Generate a Google Maps API Key

A starting point in Google Maps integration is to create a project in Google Cloud Console. The platform generates an API Key associated with that project, which serves as a form of authentication and access control when using Google Maps services within an application.
To generate an API Key, follow these steps:

1. Create a new project or select an existing one.
2. Go to the “Credentials” section and click the “Create Credentials” button.
3. Select the “API key” option.
4. Copy the generated API key.

Additionally, you should enable the Maps JavaScript API service by following these steps.

1. Navigate to the “APIs & Services” Section and click on “Enable APIs & Services”.
2. Click the “Enable APIs and Services” button.
3. Find the “Maps JavaScript API” service.
4. Click the “Enable” button.

Step 2. Set up your project

Let’s start by creating a new React application using Create React App or your preferred method.

npx create-react-app project-name
cd project-name

There are several good libraries to work with Google Maps in React. In this guideline, we will use the @react-google-maps/api library. Let's install this dependency using npm or yarn.

npm i @react-google-maps/api

The @react-google-maps/api library is a React wrapper for the Google Maps JavaScript API. This library abstracts much of the boilerplate code and complexities associated with working directly with the Google Maps JavaScript API, allowing you to focus on building interactive and feature-rich map-based applications using the familiar React paradigm.

Step 3. Add Google Maps to your project

Create a file named .env in the root folder and add the following line to it, replacing YOUR_API_KEY with your actual API key.

REACT_APP_GOOGLE_MAPS_API_KEY=YOUR_API_KEY

Let’s proceed to a component where you want to display the map. In the example below, we will add this logic to the App component. The @react-google-maps/api library provides a set of components and hooks that allow you to interact with Google Maps. The core ones are:

• LoadScript: It loads the Google Maps API script and should wrap the GoogleMap component.
• GoogleMap: It is the main map component that accepts many props to configure the view and behavior of your map. The default ones are zoom, center, and mapContainerStyle (or mapContainerClassName).
• Marker: It identifies a location on a map. By default, a marker uses a standard image, but it can be customized. However, Marker is a class component and may not work properly for React version 17+. There is an alternative called MarkerF - this is a functional component and it works fine for the latest versions of React.
  
  

Now let’s gather these components in the App.js file to create a map view.

import React from 'react';
import { GoogleMap, LoadScript, MarkerF } from '@react-google-maps/api';


// Coordinates of Acropolis in Athens, Greece
const center = {
  lat: 37.970833,
  lng: 23.726110,
};

function App() {
  return (
    <div className="App">
      <LoadScript googleMapsApiKey={process.env.REACT_APP_GOOGLE_MAPS_API_KEY}>
        <span>Acropolis, Athens</span>
        <GoogleMap
          mapContainerClassName="map-container"
          center={center}
          zoom={15}
        >
          <MarkerF position={center} />
        </GoogleMap>
       </LoadScript>
    </div>
  );
}

export default App;

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We also need to add some styles in the index.css file to prettify our layout.

.App {
margin: 20px;
}

.map-container {
  margin-top: 20px;
  height: 300px;
  width: 300px;
}

And that’s it - we can already see the result.

You can now customize the map, add more features, or integrate additional components like info windows, polygons, or directions depending on your specific application.

By following the steps above, you can seamlessly integrate Google Maps into your React application, enhancing its functionality and providing users with valuable location-based services. Whether you're building a business application, a travel app, or anything in between, the power of Google Maps can greatly enrich your user experience.

Mobile Development for Google Maps Integration

How to integrate google maps in Android app? This part will show how to set up Google Map SDK for Android and its basic usage in an Android app.

The Google Maps SDK for Android is a set of tools and APIs that allows the integration of interactive maps and location-based services into Android applications. It enables users to display maps, add markers, obtain user location, calculate routes, and access various mapping and location-related features within Android apps. To use Google Maps in Android app, follow these steps:

Step 1. Obtain the API key

So how to integrate google maps in the Android app? To start using Google Maps API, first of all, you must obtain the API key from the Google Cloud Console (https://console.cloud.google.com).

Open the GCC and create new or select an existing project.

Then, enable the "Maps SDK for Android" API and generate an API key for the selected project.

Step 2. Set up project and dependencies

When developing the Android app, you add some external libraries, modules, or components that your app module relies on to provide additional functionality or features.

To add maps functionality into the app you need to create a new or open existing project in Android Studio.

Next, in your app-level build.gradle file, add the following dependencies under the dependencies section:

implementation 'com.google.android.gms:play-services-maps:<latest_stable_verison>'
Implementation ‘com.google.maps.android:maps-compose’ (optional)

If you are using Jetpack Compose in your app, you will need to add ‘maps-compose’ dependency, in other cases, it’s not necessary.

Step 3. Configure API key in AndroidManifest.xml

By adding the API key to the <meta-data> element in the AndroidManifest.xml, your Android app will be able to access the Google Maps API or any other Google services that require the API key. Make sure to keep your API key secure and avoid hardcoding it if you plan to publish your app, as this could make it vulnerable to unauthorized access. Instead, consider using build flavors, build config files, or a secure backend server to manage API keys in production-ready apps.

Add the following element as a child of the <application> element:

<meta-data 
android:name="com.google.android.geo.API_KEY"
android:value="MAPS_API_KEY"/>

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Replace "MAPS_API_KEY" with the API key obtained in the previous step.

Step 4. Set up permissions

To use the Google Maps SDK for Android, you need to add appropriate permissions to your app's AndroidManifest.xml file. The required permissions depend on the features you want to use within the Google Maps SDK. Here are the most common permissions needed:

<uses-permission android:name="android.permission.INTERNET" /> - maps sdk requires internet access to load map tiles and other data.
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/> 
or
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>

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If your app needs to display the user's current location on the map or use location-based services, you need to declare ACCESS_FINE_LOCATION. But if you only need approximate location information, you can use the ACCESS_COARSE_LOCATION permission, which requires less precision than the fine location permission.

Handling runtime permission checks is essential to ensure the user grants the necessary permissions during app runtime.

Step 5. Show GoogleMap

This step depends on which kind of UI layout you use: XML and Jetpack Compose.

Using  layout XML

If you use layout XML-based UI, you need to add MapFragment or MapView into the layout. For example, using a MapView, you need to add this code into xml layout:

<com.google.android.gms.maps.MapView
    android:id="@+id/mapView"
    android:layout_width="match_parent"
    android:layout_height="match_parent"/>

‍

Next, you need to initialize the GoogleMap object in your Activity or Fragment. In your Activity or Fragment, initialize the GoogleMap object by calling getMapAsync() on the MapView or MapFragment. For example, in onCreate() method:

 mapView.getMapAsync(object : OnMapReadyCallback {
   override fun onMapReady(googleMap: GoogleMap) {
        // Customize and interact with the GoogleMap object here
   }
})

‍

Using Jetpack Compose

If you use Jetpack Compose, then you just need to add GoogleMap composable into the composable hierarchy. This example shows adding GoogleMap, which fills available space inside the container. By just calling GoogleMap(), you can show a map in the app. Quite simple because GoogleMap is a compose container for MapView.

Inside a composable container GoogleMap can be added as an example:

Column(
modifier = Modifier
.fillMaxSize()
.background(MaterialTheme.colors.background)
.padding(16.dp)
) {
		GoogleMap( params… )
}

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Step 6. Customize the map

Inside the onMapReady() callback or when initializing the GoogleMap Composable, you can customize the map per your requirements. For example, you can add markers, set the map type, enable user gestures, etc.

Some parameters can be set in GoogleMap Composable:

• cameraPositionState: CameraPositionState — used to control or observe the map’s camera state.
• googleMapOptionsFactory: () -> GoogleMapOptions — the block for creating the GoogleMapOptions provided when the map is created.
• properties: MapProperties — properties of the map like isBuildingEnabled, isIndoorEnabled, etc.
• uiSettings: MapUiSettings— UI-specific settings on the map like compassEnabled, scrollGesturesEnabled, rotationGesturesEnabled, etc.
• various lambdas like onMapClicked, onMapLoaded, onMyLocationButtonClick.

Using XML-based MapView, these settings can be configured inside onMapReady callback:

mapView.getMapAsync { googleMap ->
    	googleMap.uiSettings.isZoomControlsEnabled = true
googleMap.uiSettings.isMyLocationButtonEnabled = true
googleMap.uiSettings.isCompassEnabled = true
googleMap.setOnMapClickListener { latLng -> 
       // Handle map click event here
}
googleMap.setOnMapLoadedCallback {
       	      // Handle map loaded event here
}
    	googleMap.setOnMyLocationButtonClickListener {
      // Handle My Location button click event here
    }
}

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The Google Maps SDK for Android allows to integrate powerful mapping and location-based services into Android applications. Adding the SDK to the projects allows you to display interactive maps, add markers, draw routes, and access geospatial data.

The SDK provides a range of features, such as customizing map styles, enabling user location tracking, and implementing map gestures.

The steps that we provided above will help to get started with maps integration and use Google Maps in Android app. Still, for more information about your business requirements, you will also need to check the official documentation from Google.

How Many Team Members Do You Need for Google Maps Integration?

The number of team members required for Google Maps integration depends on various factors, including the complexity of the integration, the scope of the project, the platform(s) you are targeting (web, mobile, or both), and the specific skills and expertise of the team members.

In general, a typical team for a Google Maps integration project might include:

• Back-end Developer: Responsible for setting up and managing the server-side components, handling API requests, and managing data related to maps and locations.
• Front-end Developer: In charge of integrating Google Maps on the user interface, displaying maps, markers, and info windows, and implementing user interactions.
• Mobile App Developer (if applicable): Required for mobile app projects to integrate Google Maps into iOS or Android applications.
• UX/UI Designer: To design a user-friendly map interface, ensuring an intuitive user experience.
• QA/Test Engineer: Responsible for testing the integration to ensure it works as expected and is free from bugs or errors.
• Project Manager: Overseeing the project, coordinating tasks, setting timelines, and ensuring smooth communication between team members.
• Optional - GIS Specialist: For projects that involve complex geospatial data or require advanced mapping functionalities.

General Estimates

Here are some general estimates to provide a rough idea:

• Basic Integration: A simple integration, like embedding a Google Map on a website or mobile app, can take anywhere from a few hours to a couple of days for a skilled developer.
• Standard Integration: Integrating basic features like markers, info windows, and geolocation might take around 1 to 2 weeks, depending on the complexity and the team's familiarity with the task.
• Intermediate Integration: Adding more advanced features like directions, route optimization, and place search could take approximately 2 to 4 weeks, depending on the scope.
• Advanced Integration: For projects that involve complex features like real-time location tracking, custom map styling, geofencing, and extensive backend development, the timeline could extend from 1 to 3 months or more, depending on the team size and expertise.

It's important to consider that unexpected challenges or custom requirements may arise during development, which can impact the overall timeline. Additionally, thorough testing and quality assurance are essential to ensure a reliable and bug-free integration.

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• Our estimations

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At Axon, we have extensive expertise in seamlessly integrating Google Maps into a wide range of applications. Our skilled team of software engineers and developers has hands-on experience in harnessing the full potential of Google Maps to enhance the navigational capabilities and user experiences of our clients' applications.

With a deep understanding of both the front-end and back-end aspects of development, our experts can craft customized solutions that precisely meet your unique requirements. Whether you need to integrate Google Maps into a web application, a mobile app, or both, we have the knowledge and skills to deliver a polished and user-friendly mapping experience.

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Conclusion

In conclusion, integrating Google Maps into your application empowers you to provide valuable location-based features and improve the overall user experience. Whether you are creating a web or mobile application, incorporating maps, markers, directions, and geocoding can elevate your project to new heights. By following the steps outlined in this blog post and leveraging the vast array of Google Maps' offerings, you can create a compelling and functional application that captivates users and meets their location-based needs. So, embrace the power of Google Maps, and let your application navigate users to new horizons.