如何從特定的行SQLiteAssetHelper檢索數據

Question

如何通過其ID檢索特定數據並在textview中顯示它們？ 而不是檢索數據並在列表視圖中顯示所有數據。 請幫忙！

公共類KaikaiProfileActivity擴展了ListActivity {

private Cursor animals;
private MyDatabase db;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    db = new MyDatabase(this);
    animals = db.getAnimals(); // you would not typically call this on the main thread

    ListAdapter adapter = new SimpleCursorAdapter(this, 
            android.R.layout.simple_list_item_2, 
            animals,
            new String[] {"animalName","animalPersonality"}, 
            new int[] {android.R.id.text1, android.R.id.text2});;


    getListView().setAdapter(adapter);






}

@Override
protected void onDestroy() {
    super.onDestroy();
    animals.close();
    db.close();
}

//檢索所有數據如何從特定行檢索數據？ 公共游標getAnimals（）{

    SQLiteDatabase db = getReadableDatabase();
    SQLiteQueryBuilder qb = new SQLiteQueryBuilder();

    String [] sqlSelect = {"0_id", "animalName", "animalInfo","ImageName","animalGender","animalDOB",
                             "animalDOB", "animalBirthPlace", "animalPersonality", "animalFeatures", "animalFood", "animalPastTime"
    };
    String sqlTables = "AnimalInfo";

    qb.setTables(sqlTables);
    Cursor c = qb.query(db, sqlSelect, null, null,
            null, null, null);

    c.moveToFirst();
    return c;

}

Answer 1

使用c.moveToPosition(int index)代替c.moveToFirst()以獲取該特定索引處的記錄

例如，如果要返回第一條記錄，請使用c.moveToPosition(0) ，第二條記錄請使用c.moveToPosition(1) ，依此類推

如果qb.appendWhere("<colname>=<value>") ;列值檢索，請使用qb.appendWhere("<colname>=<value>") ;