Archived:Calculating the distance between two locations in Flash Lite

This code snippet demonstrates how to calculate the distance between two locations using the Location Platform Service for Flash Lite supported from S60 5th Edition onwards.

Article Metadata

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Code Example

Source file: Media:FlashLite Calculating The Distance.zip

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Tested with

Devices(s): Nokia 5800 XpressMusic

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Compatibility

Platform(s): S60 5th Edition and later

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Article

Keywords: Service.Location, location.Calculate()

Created: User:Nokia Developer KB (26 Jan 2009)

Last edited: hamishwillee (03 Oct 2012)

Source

// Import Platform Service Interface
import com.nokia.lib.Service;

// Heading of the application
heading_txt.text = "Calculate Distance";
 
// Create new Service object which has location data
var location = new Service("Service.Location", "ILocation");
 
// Define source distance
var sourceDistance = {Longitude:1, Latitude:0.49, Altitude:0.5};
var startPoint:String = new String("Longitude:1, Latitude:0.49, Altitude:0.5");
 
// Define destination distance
var destinationDistance = {Longitude:1, Latitude:0.5, Altitude:0.5};
var destinationPoint:String =
    new String("Longitude:1, Latitude:0.5, Altitude:0.5");
 
// Define input parameters
var inParams = {
    MathRequest:"FindDistance", DistanceParamSource:sourceDistance, 
    DistanceParamDestination:destinationDistance
    };
 
// Define result value
var outParams = location.Calculate(inParams);
 
// Check if calculate success
if (outParams.ErrorCode == 0) {
    var distance = outParams.ReturnValue;
    text_txt.text += "Distance: "+distance+"\r\r";
    text_txt.text += "from:\r"+startPoint+"\r\r";
    text_txt.text += "to:\r"+destinationPoint;
} else {
    var errorId = outParam.ErrorCode;
    text_txt.text += "Error: "+errorId;
}

Postconditions

The distance between the source and destination is displayed.

Example application

The following sample application has been tested in Nokia 5800 XpressMusic (S60 5th Edition, Flash Lite 3.0): File:FlashLite Calculating The Distance.zip

See also

• Flash Lite API reference: Location Information in the Flash Lite Developer's Library