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iDrive. Mid-term project review. Team Objectives. Retrieve the route from the routing engines at regular intervals M anipulate the in-built phone GPS such that it will send programmer defined GPS co-ordinates to the OSMAND application

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Idrive

iDrive

Mid-term project review


Team objectives
Team Objectives

  • Retrieve the route from the routing engines at regular intervals

  • Manipulate the in-built phone GPS such that it will send programmer defined GPS co-ordinates to the OSMAND application

  • Faking the GPS will enable the application to be tested in any part of the world


Approach
Approach

  • Get the route from the route engine (GPX file) and display the route on the screen

  • Store the co-ordinates from the GPX file into an ArrayList (done in the code)

  • Override the app code to provide new lat, long values wherever onLocationChanged (Location location) is called

  • Replace Location.getLatitude() with mock_res.get(count).getLatitude() and similarly for longitude

  • Built a timer to increment the count and provide new location on requestLocationUpdate()

  • Getting built without errors


Route
Route

  • Screenshot of the route being displayed


Justification
Justification

  • There were three options for implementation:

    • Changing the framework

    • Changing the app code

      • Difficult to implement. Changes in one section of the code may cause problems in other sections.

    • Using the Eclipse Emulator

      • The phone would not be able to be tested for performance meaaures


Modified approach
Modified Approach

  • Add code to framework to pass the array entries to the public abstract void onLocationChanged (Location location)

  • Each time onLocationChanged is called, it should be passed a new set of co-ordinates from the ArrayList

  • After a set time interval, the OSMAND code should send the current location of the device to the route engine and retrieve a new route


Flow

OSMAND application

Route Engine

Get Route

Store coordinates

Send Location

onLocationChanged

Android Framework

Pass fake co-ordinates to onLocationChanged


Obstacles
Obstacles

  • Understanding the android code

  • According to the initial approach, it was tough to identify the parts of code that would need modifications

  • Compile and edit framework

  • Testing (wireless signal …)


Schedule
Schedule

  • Tasks

    • Displaying the route

    • Modifying the android framework to fake the GPS readings

    • Implementing a timer function to call the route engine at regular intervals and refreshing the route

    • Add current location to UI

    • Finish by Mid-November