Question

I am new in android. I need to fill the spinner from SQLite database.
my layout >> main.xml contains

<Spinner 
            android:id="@+id/cmbLocations"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:drawSelectorOnTop="true"
            android:prompt="@string/location_prompt"
        />

<EditText android:id="@+id/text1" android:layout_width="300dp" android:layout_height="wrap_content"/>

I have a public function which returns the locations:

public static final String KEY_ROWID = "_id";
public static final String KEY_LOCATION = "location";

public Cursor GetLocations()
    {
        return db.query(DATABASE_TABLE, 
                new String[] 
                { 
                    KEY_ROWID, // "_id"
                    KEY_LOCATION // "location"
                }, null, null, null, null, null);
    }

The code which is populating the spinner is :

    Spinner cmbLocations = (Spinner) findViewById(R.id.cmbLocations);
    DBAdapter db = new DBAdapter(this);
    db.open();

    Cursor cur = db.GetLocations();
    String[] from = new String[]{"_id","location"};
    int[] to = new int[]{R.id.text1};// I don't know that why text1 is required here

    startManagingCursor(cur);
    SimpleCursorAdapter adapter = new SimpleCursorAdapter(this,android.R.layout.simple_spinner_item, cur, from, to); 
                    adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
cmbLocations.setAdapter(adapter);
db.close();

The issue i am facing is that the spinner controls shows EMPTY locations. For example if i have two locations, Location1 & Location2. The spinner will show two EMPTY locations. If i have 3 locations the spinner will show three EMPTY locations.

Thanks in advance for your help.

Answer 1

Try using:

String[] from = new String[]{"_id","location"};
    int[] to = new int[]{R.id.text1,R.id.text2};// I don't know that why text1 is required here

int[] to is for placing the values from the cursor,you defined in from.. For example,you are fetching _id and location then you would have to specify its destination,here it might be textview.