Android SQLite get value from column

Question

I have a column ShopName, and another column called LocationCode, if the LocationCode equals to "SKP", the corresponding ShopName will be added to an array, my question is, how can I do that?

I got something like this:

public List<String> getQuotes() {
    String WhiteFarm = "WhiteFarm";
    List<String> list = new ArrayList<>();
    Cursor cursor = database.rawQuery("SELECT * FROM WhereToEat WHERE 'LocationCode' = " + WhiteFarm, null);
    cursor.moveToFirst();
    while (!cursor.isAfterLast()) {
        list.add(cursor.getString(0));
        cursor.moveToNext();
    }
    cursor.close();
    return list;
}

And another class like this:

public class DatabaseGrabber extends ActionBarActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.selection_main);

    final TextView Shop_name = (TextView)findViewById(R.id.ShopName);

    DatabaseAccess databaseAccess = DatabaseAccess.getInstance(this);
    databaseAccess.open();
    final List<String> ShopName = databaseAccess.getQuotes();
    databaseAccess.close();

    Button StartDraw = (Button)findViewById(R.id.draw_start);
    StartDraw.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Collections.shuffle(ShopName);
            String random = ShopName.get(0);
            Shop_name.setText(random);
        }
    });
}
}

Answer 1

如果您的 LocationCode 包含 String（或 SQLite 的 TEXT）类型的数据，则您的值应括在单引号中，如下面的代码所示：

Cursor cursor = database.rawQuery("SELECT * FROM WhereToEat WHERE LocationCode = " + "'" + WhiteFarm "'", null);