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androidgpsroutesgeopositioning

draw a route in android maps

In the following code:

if(c.moveToFirst()) 

    {


     do{


   longitude=Integer.parseInt(c.getString(0));


   latitude=Integer.parseInt(c.getString(1));


    p = new GeoPoint(latitude,longitude);


   geoPointsArray.add(p);


   theRouteDraw();


   }while(c.moveToNext());


     }

Where c is cursor obtained form a database where I have stored GPS data (longitude,latitude)

          Cursor c=db.getAllData();

And:

theRouteDraw(); is a method that draws a line between two GPS points.

In the way I proceeded above in my geoPointsArray[] I have all this points and then

I pass it to theRouteDraw(); where the line between this points is drawn instantly!!!!

Now I wanna set a delay in the above code in order to put a point in geoPointsArray[] and call theRouteDraw().......the line to be drawn step by step

If I don't use a delay my app gets blocked for a while(not FC) until the line is drawn......cause it gets to manyy points which need to be connected on the map!!

Any idea how to do that?????????????????

Solution

  • You should use a separate thread to perform the theRouteDraw() function: see the AsyncTask class and examples (such as http://labs.makemachine.net/2010/05/android-asynctask-example/) for how to do that.

    This will prevent your app from blocking.