Question

i’ve got a database what i wanted to display in a listview.
i have something to work. heres the code:

Cursor cursor = myDataBase
                    .rawQuery(
                            "SELECT * FROM Accelerometer where cur_timestamp<'2012-09-04 11:36:25'",
                            null);          

            while (cursor.moveToNext()) {
                // Which column you want to exprort
                String arrStr[] = { cursor.getString(0)+" | " + cursor.getString(1)+" | " + cursor.getString(2)+" | "+ cursor.getString(3)+" | " + cursor.getString(4)+"\n" };
                if (arrStr.length != 0) {
                    Log.d("TravellerLog :: ", Arrays.toString(arrStr));
                    //data.setText(Arrays.toString(arrStr));
                    ListView listView = (ListView) findViewById(R.id.listView1);
                    // a listát berakni aegy arraylist-be
                     ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, android.R.id.text1,
                             arrStr);
                     listView.setAdapter(adapter);

                } else {
                    Log.e("TravellerLog :: ", "Üres a tömb!");
                }
            }

            cursor.close();

what should i change in the code to get it work?To list all the rows i want
Thank you very much for the answers!

Answer 1

You are initializing the list view and the adapter inside the while loop..
which means that for every db row you create a new list.

List<String> arrStr = new Vector<String>();
while (cursor.moveToNext()) {
            // Which column you want to exprort
            arrStr.add(cursor.getString(0)+" | " + cursor.getString(1)+" | " + cursor.getString(2)+" | "+ cursor.getString(3)+" | " + cursor.getString(4)+"\n" );
            if (arrStr.length != 0) {
                Log.d("TravellerLog :: ", Arrays.toString(arrStr));
                //data.setText(Arrays.toString(arrStr));
            } else {
                Log.e("TravellerLog :: ", "Üres a tömb!");
            }
        }

        cursor.close();

 ListView listView = (ListView) findViewById(R.id.listView1);
                // a listát berakni aegy arraylist-be
                 ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, android.R.id.text1,
                         arrStr);
                 listView.setAdapter(adapter);