Question

I want to know how to pass a value that was retrieve from the Column numbers in my database class, which is the DBUser.java, and assign it to a variable to another class?.
I’ve tried this method in my DBUser.java:

public String getNumber() throws SQLException  
{  
    String number;
    Cursor mCursor = db.query(DATABASE_TABLE, new String[] {KEY_NUMBER}, null, null, null, null, null);

    number = mCursor.getString(mCursor.getColumnIndex(KEY_NUMBER)); // KEY_NUMBER ="numbers"
    mCursor.close();

    return number; // I think I'm missing something here???? IDK
}

And this is the method in my main class which I would like to pass the value of the column numbers:

public void onACU (View view) {
    String messageToSend = "ACU ON";

    DBUser dbUser = new DBUser(AleccMainActivity.this);  
    dbUser.open();  // I opened the DB
    // recipient is a global variable.
    recipient = dbUser.getNumber();//then I assigned the method in my string var thinking that the value will be passed to it.
    dbUser.close(); // then i close the DB

    SmsManager.getDefault().sendTextMessage(recipient, null, messageToSend, null,null);
}

My instincts tell me that my db.query and return statement doesn’t seem right so please do tell me on how to get it working.
I’m new to java though. thanks!

Answer 1

Even if the cursor has only one row, you have to call moveToFirst() or moveToNext().