Android google map v2 auto update - google-maps

Question

Hi i need marker update at time i try do it
ArrayList<LatLng> markerList = new ArrayList<LatLng>();
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_soc_map);
mMap = ((MapFragment) getFragmentManager().findFragmentById(R.id.map)).getMap();
markerList.add(new LatLng(48.8742, 2.3470));
markerList.add(new LatLng(0, 0));
Timer timer = new Timer();
timer.scheduleAtFixedRate(new TimerTask(){
GetDataFromWeb GDFW = new GetDataFromWeb();
public void run() {
for (LatLng latLon : markerList) {
mMap.addMarker(new MarkerOptions().position(latLon).title("Another marker"));
}
//GDFW.execute();
}
}, 12000, 12000);
}
so.. i take from database Lat and Lng but i just test with
markerList.add(new LatLng(48.8742, 2.3470));
markerList.add(new LatLng(0, 0));
so.. i need after 12s take Lat and Lag and update map marker
I have not found anywhere answer so maybe you can help me:)

Answer 1

Hey I have just got the same problem and solved it.
public class Livebus extends Activity {
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.googlemaps);
mMap = ((MapFragment) getFragmentManager().findFragmentById(R.id.map)).getMap();
mTask = (GetDataFromWeb) new GetDataFromWeb().execute(); //This is an AsyncTaskClass
}
class GetDataFromWeb extends AsyncTask<String, String, String> {
protected String doInBackground(String... param) {
while(true)
{
//HERE You should collect your data from the Web
latitude=...
longitude=...
//You have to update the markers in the Main thread which is also called UI thread.
//AsyncTask classes create theit own thread so you need to run the marker
//update on the UI thread. Which you can see below now.
runOnUiThread(new Runnable() {
public void run() {
mMap.addMarker(new MarkerOptions()
.position(new LatLng(latitude, longitude))
.title("Hello"));
}
});
}
}
}
This is my first answer here I hope it helps you :)
If something doesn't work pls contact me I will get it working.
Details on AsyncTasks: http://developer.android.com/reference/android/os/AsyncTask.html
Details on the threads: http://developer.android.com/guide/components/processes-and-threads.html
Read that I also learnt my lesson today.