Question

I have this function to show an AlertDialog when taping on marker:

protected boolean onTap(int index) {
        db = openHelper.getWritableDatabase();

    AlertDialog.Builder dialog = new AlertDialog.Builder(Geo.this);
    String[] columns_descri = new String[] {COL_DESCRI};
    Cursor cur = db.query(true, TABLE_COORD, columns_descri,null, null, null, null, null, null);
    if (cur.moveToPosition(index-1)) {
    String description = cur.getString(cur.getColumnIndexOrThrow(COL_DESCRI));
    dialog.setTitle("Info.");
    dialog.setMessage(description); 
    dialog.show();
    }
    db.close();
    return true;     } 

And this method to retrieve any tapped touch on map:

@Override
    public boolean onTouchEvent(MotionEvent event, MapView maMap) 
    {   
        //---when user lifts his finger---
        if (event.getAction() == 1) {                
            GeoPoint p = maMap.getProjection().fromPixels(
                (int) event.getX(),
                (int) event.getY());
                Toast.makeText(getBaseContext(), 
                    p.getLatitudeE6() / 1E6 + "," + 
                    p.getLongitudeE6() /1E6 , 
                    Toast.LENGTH_SHORT).show();
        }                            
        return true;
    }       

The problem is when onTouchEvent returns TRUE i can’t control the map, move it, or show the AlertDialog when taping on a marker. When it’s false, i re-take control of the map, but the toast displays many time(5 or 6 times).
What could be the source of this weird problem?

Answer 1

OnTouchEvent is called on EACH touch event.
Press, drag (many events), release.
Therefore your toast is showing a lot.
return true only inside your if clause and return false otherwise.
That should solve it.