Question

Earlier I asked this question ( and after some googling I read Using your own SQLite database for Android app.

So, I have a simple database which contains 2 columns (_id and quotes). What I need to do is to grab all the quotes from the db and show them 1 by 1 in a TextView.

I have this in my DataBaseHelper.java:

private SQLiteDatabase myDataBase; 
public void openDataBase() throws SQLException{

    //Open the database
    String myPath = DB_PATH + DB_NAME;
    myDataBase = SQLiteDatabase.openDatabase(myPath, null, SQLiteDatabase.OPEN_READONLY);
    Cursor mCursor = myDataBase.query(true, DB_NAME, null, new String[] + "=" + "_id", null,
              null, null, null, null);
        if (mCursor != null) {
          mCursor.moveToFirst();
        }

What should I do? Thanks

Answer 1

This function is how I fetch data from a database where “db” is the database instance.
This function will return an 2D String array where [0][x] is the first row it fetched and [1][x] is the second, etc; and the x is the columns, and in your case [0][1] would be the first quote in your database.

public String[][] customQuery(String query) {
    Cursor cur = null;
    try {
        cur = db.rawQuery(query,null);
    } catch(SQLException e) {
        Log.d("DATABASE", e.toString());
    }

    String data[][] = new String[cur.getCount()][cur.getColumnCount()];

    if (cur != null) {
        int i = 0;
        while (cur.moveToNext()) {
            int j = 0;
            while (j < cur.getColumnCount()) {
                data[i][j] = cur.getString(j);
                j++;
            }
            i++;
            cur.moveToNext();
        }
        cur.close();
    }
    return data;
}