Why Did Google Directions for Android Stop Supporting KML Data, and How Can I Migrate to a Working Solution?

Why retrieving Google Directions for Android using KML data is not working anymore?

Previously, Google Directions could be retrieved using KML data, but this method has been deprecated as of July 27, 2012. The structure of Google Directions has been modified, and KML data is no longer supported.

Solution and Alternatives

To obtain Google Directions, you must now migrate to JSON or XML. Here is a set of classes and code snippets to assist you:

Classes

• Parser.java: Interface for parsing directions data.
• XMLParser.java: XML parser that handles KML data (deprecated).
• Segment.java: Represents a segment of the route, including points, instructions, and distance.
• Route.java: Represents the complete route, including segments, points, and metadata.
• GoogleParser.java: Implements the Parser interface to parse Google JSON directions data.
• RouteOverlay.java: Overlay for drawing the route on a map.

Code Snippets

Using GoogleParser to retrieve directions (AsyncTask recommended):

private Route directions(GeoPoint start, GeoPoint dest) {
    String jsonURL = "https://maps.googleapis.com/maps/api/directions/json?";
    jsonURL += "origin=" + start.getLatitudeE6() / 1E6 + "," + start.getLongitudeE6() / 1E6;
    jsonURL += "&destination=" + dest.getLatitudeE6() / 1E6 + "," + dest.getLongitudeE6() / 1E6;
    jsonURL += "&sensor=true&mode=driving";
    Parser parser = new GoogleParser(jsonURL);
    return parser.parse();
}

Adding the route overlay to a MapView:

RouteOverlay routeOverlay = new RouteOverlay(route, Color.BLUE);
mapView.getOverlays().add(routeOverlay);
mapView.invalidate();

By switching to JSON or XML and implementing these classes, you can continue to retrieve and display Google Directions in your Android application.

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