how to retrive data from sqlite database? in android

is this correct code if i want to select a name from spinner and display its corresponding distance in text view?

public class MainActivity extends Activity implements OnClickListener,OnItemSelectedListener{ /** Called when the activity is first created. */

private Spinner spinner_s;
DatabaseHelper  db;
ArrayAdapter<String> adapter;

Cursor cur;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    db = new DatabaseHelper(this);

    //insert stations into sqlite database
    db.insertData("abc", 12);//name,distance
    db.insertData("xyz", 10);

    spinner_s = (Spinner) findViewById(R.id.spinner_src);
    loadSpinner(spinner_s);
    spinner_s.setOnItemSelectedListener(this);

    cur = db.find_distance(spinner_s.getSelectedItem().toString());

    if(cur.moveToFirst()) {
            String dis = cur.getString(2);
            TextView ag = (TextView) findViewById(R.id.tv_fare);
            ag.setText(dis);
    }

}

and in DatabaseHelper class i have:

public void insertData(String label, Integer dist) {

    SQLiteDatabase db = this.getWritableDatabase();
    ContentValues values = new ContentValues();
    values.put(name, label);
    values.put(distance, dist);
    db.insert(TABLE, null, values);
    db.close();
}

public Cursor find_distance(String Selecteditem) {

    String selectQuery = "SELECT distance FROM "+TABLE + " WHERE "+name +" = '"+ Selecteditem +"';"  ;

    String dis="";
    SQLiteDatabase db = this.getReadableDatabase();
   Cursor cursor = db.rawQuery(selectQuery, null);
   cursor.moveToFirst();
    //dis =  cursor.getString(2);//cursor.getColumnIndex("distance"));
    //cursor.close();
    db.close();
    return cursor;

}

When i run this code, i get error in emulator saying, unfortunately app has stopped!! what to do?

need some help!