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我想從0123.表格中獲得Id表格，但沒有得到任何結果。這是我的代碼：Android從rawQuery獲取數據到另一個表格
public class EmployeeList extends ListActivity {
protected EditText searchText;
protected SQLiteDatabase db;
protected Cursor cursor;
protected ListAdapter adapter;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
db = (new DatabaseHelper(this)).getWritableDatabase();
searchText = (EditText) findViewById (R.id.searchText);
}
public void search(View view) {
// || is the concatenation operation in SQLite
cursor = db.rawQuery("SELECT _id FROM employee WHERE firstName=?",
new String[]{searchText.getText().toString()});
Intent intent = new Intent(this, EmployeeDetails.class);
long id = cursor.getLong(cursor.getColumnIndex("_id"));
intent.putExtra("EMPLOYEE_ID", id);
startActivity(intent);
}
}