nullPointerException for SQLiteOpenHelper.getWritableDatabase(), Android

Question

I am trying to get SQLite database to work on Android. Wrote a small test in the MainActivity that consists of entering values in 3 collumns of one row of the database. aft

Answer 1

Your context is null change Database db = new Database(context); to Database db = new Database(this); in onCreate

You should also change your Database constructor so that you do not have to instantiate the SQLiteHelper class every time you open the database.

public Database(Context c){
      context = c;
      sqLiteHelper = new SQLiteHelper(context, MYDATABASE_NAME, null, MYDATABASE_VERSION);
     }  

And remove sqLiteHelper = new SQLiteHelper(context, MYDATABASE_NAME, null, MYDATABASE_VERSION); from your openToRead() and openToWrite()