Get coordinates on tapping map in android

Question

I'm trying to make something like this: I have a mapactivity and when the user taps the map it shows the coordinates of that location. I already overrided the onclick method but it isn't even called. Any Idea?

public class MapPoint extends MapActivity implements OnClickListener {

@Override
public void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);
    setContentView(R.layout.mappoints);

    MapView map = (MapView)findViewById(R.id.mapview);
    map.setOnClickListener(this);
    map.setBuiltInZoomControls(true);
    map.getController().setZoom(18);
    map.getController().setCenter(new GeoPoint(39735007, -8827330));


}

@Override
protected boolean isRouteDisplayed() {
    // TODO Auto-generated method stub
    return false;
}

public void onClick(View arg0) {
        Toast.makeText(this, "text", Toast.LENGTH_SHORT);
}

}

Answer 1

Try the following.

Write a class which derives from the Overlay class and override the onTap() method. Then you can add your overlay to the your MapView. A GeoPoint object, which represents the position of you tap, is passed to the onTap() method when you tab somewhere on the map.

Answer 2

onClick() is not used here. You will need to override onTouchEvent(). Here is a sample project showing using onTouchEvent() to drag and drop ItemizedOverlay map pins.

Given the screen coordinates of the touch, you can use a Projection (from getProjection() on MapView) to convert that to latitude and longitude.

Answer 3

The modern answer, using Android Maps v2, is to use OnMapClickListener, which gives you the LatLng of a tap on the map.

https://developer.android.com/reference/com/google/android/gms/maps/GoogleMap.OnMapClickListener.html