Question

I´m writing an android application that receives gps data from a MySQL database, such as gps coordinates, and then tells the shows the user these coordinates on Google maps.

I have a SQLite database that stores the Latitude and Longitude values locally, and my question is how I can retrieve these values in on SQLite query and return the values in to two strings.
This is my take on the problem.

DbAdapter class “Databasehandler”:

    public Cursor getLatLng(){
    SQLiteDatabase db = this.getReadableDatabase();
    return db.rawQuery("SELECT * FROM " + TABLE_CARCOORD + " WHERE name = " + CAR_KEY_NAME , null);
    }

Class “UserFunction”:

    public String getCoords(Context context, String lat, String lng) {
    DatabaseHandler db = new DatabaseHandler(context);
    Cursor cursor = db.getLatLng();
    if (cursor.moveToFirst()){
        lat = cursor.getString(cursor.getColumnIndex("lat"));
        lng = cursor.getString(cursor.getColumnIndex("lng"));
    }
    return lat, lng;
    }

It gives me error when i try to return two values. Anyone that haves any suggestions?
I’m a beginner at android programming and Java in general, so please forgive me if there is an obvious answer to this.

Answer 1

instead of returning String change return type of method to ArrayList or String Array to return more then one value from method as :

 public ArrayList<String> getCoords(Context context, String lat, String lng) {
DatabaseHandler db = new DatabaseHandler(context);
 ArrayList<String> locarrlist=new  ArrayList<String>();
Cursor cursor = db.getLatLng();
if (cursor.moveToFirst()){
    lat = cursor.getString(cursor.getColumnIndex("lat"));
    lng = cursor.getString(cursor.getColumnIndex("lng"));
    locarrlist.add(lat);
    locarrlist.add(lng);
}
return locarrlist;
}

and in other call retrieve these values as :

 ArrayList<String> locarrlist=getCoords(context,lat,lng);
 String lat = locarrlist.get(0);
 String lng = locarrlist.get(1);