How to Find a Route Using the Android Google Maps API?

How do I find a route using the Google Maps API in Android?

// Initialize Google Maps API
GoogleMap googleMap;  
LatLng origin = new LatLng(37.784, -122.407);
LatLng destination = new LatLng(37.785, -122.406);

// Create the request for the directions
String url = getDirectionsUrl(origin, destination); 

To find a route using the Google Maps API in Android, you will need to request directions between two geographical coordinates. This involves setting up the Maps SDK and using third-party services like Google Directions API to retrieve route data and then display it on a Google Map instance.

private String getDirectionsUrl(LatLng origin, LatLng dest) {
    // Initialize StringBuilder for the URL
    String str_origin = "origin=" + origin.latitude + "," + origin.longitude;
    String str_dest = "destination=" + dest.latitude + "," + dest.longitude;
    String sensor = "sensor=false";
    String parameters = str_origin + "&" + str_dest + "&" + sensor + "&" + "key=YOUR_API_KEY";
    String output = "json";
    String url = "https://maps.googleapis.com/maps/api/directions/" + output + "?" + parameters;
    return url;

Causes

• Incorrect API key configuration.
• Failure to handle network requests properly.
• Improper parsing of response data from the Directions API.

Solutions

• Ensure your Google Maps API key is correctly set up and has the necessary permissions.
• Use asynchronous tasks to handle network requests and keep your UI responsive.
• Implement proper JSON parsing logic to extract required data from the Directions API response.

Mistake: Not including the API key in the request.

Solution: Always append your API key to the URL to authorize the request.

Mistake: Using synchronous network calls on the UI thread.

Solution: Use AsyncTask or Retrofit for network operations to avoid UI freezing.