Question

I have written some thing like this to fetch data from the database.

public String getData() {
    // TODO Auto-generated method stub
    String[] columns = new String[]{ KEY_ROWID, KEY_NAME, KEY_SCORE};
    Cursor c = ourDatabase.query(
                DATABASE_TABLE, columns, null, null, null, null, null);
    String result = "";

    int iRow = c.getColumnIndex(KEY_ROWID);
    int iName = c.getColumnIndex(KEY_NAME);
    int iHotness = c.getColumnIndex(KEY_SCORE);

    for (c.moveToFirst(); !c.isAfterLast(); c.moveToNext()){
        result = result + c.getString(iRow) + " " + c.getString(iName) + " " + c.getString(iHotness) + "\n";
    }

    return result;
}

and i am able to show data into textview. But i want to show data into listview can anyone suggest me or give me a sample code to show data into listview. I had taken a list.xml and put a listview in that. I want to fetch data from the database.

thanks in advance.

Answer 1

public String[] getData() {
    // TODO Auto-generated method stub
    String[] columns = new String[]{ KEY_ROWID, KEY_NAME, KEY_SCORE};
    Cursor c = ourDatabase.query(DATABASE_TABLE, columns, null, null, null, null, null);
    //Initialise the result variable
    String[] result = new String[c.getCount()];

    int iRow = c.getColumnIndex(KEY_ROWID);
    int iName = c.getColumnIndex(KEY_NAME);
    int iHotness = c.getColumnIndex(KEY_SCORE);
    int counter = 0;
    for (c.moveToFirst(); !c.isAfterLast(); c.moveToNext()){
        result[counter] = c.getString(iRow) + " " + c.getString(iName) + " " + c.getString(iHotness) + "\n";
        counter++;
    }

    return result;
}

Then in the ListView onCreate you add the result string to you adapter.

   setListAdapter(new ArrayAdapter<String>(this, R.layout.list_item, result));