我有我的 sqlite 数据库文件 nhl.db,我把它放在我项目的 assets 目录中。然后我从 Eclipse 运行模拟器并加载程序,但是当我调用数据库时,我得到一个“没有这样的表”错误。我检查了 data/data/myapp/databases/ 目录,有一个带有我的数据库名称的文件,但是打开检查它,它是一个空的数据库文件,显然是由 SqLiteOpenHelper 创建的,因为它找不到我的数据库.
我的问题是我应该把我的 sqlite 数据库文件放在哪里,以便它被打开而不是创建?
public class DatabaseHandlerSimple extends SQLiteOpenHelper {
// All Static variables
// Database Version
private static final int DATABASE_VERSION = 1;
// Database Name
private static final String DATABASE_NAME = "nhl";
// Contacts table name
private static final String TABLE_PLAYERS = "players";
// Contacts Table Columns names
private static final String KEY_ID = "id";
private static final String KEY_TEAM = "team";
private static final String KEY_NUMBER = "number";
private static final String KEY_FNAME = "firstname";
private static final String KEY_LNAME = "lastname";
private static final String KEY_POSITION = "position";
public DatabaseHandlerSimple(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
}
// Getting All Contacts
public List<Player> getAllPlayers() {
List<Player> playerList = new ArrayList<Player>();
// Select All Query
String selectQuery = "SELECT * FROM " + TABLE_PLAYERS;
SQLiteDatabase db = this.getWritableDatabase();
Cursor cursor = db.rawQuery(selectQuery, null);
// looping through all rows and adding to list
if (cursor.moveToFirst()) {
do {
Player player = new Player();
player.setID(Integer.parseInt(cursor.getString(0)));
player.setTeam(Integer.parseInt(cursor.getString(1)));
player.setNumber(Integer.parseInt(cursor.getString(2)));
player.setFirstName(cursor.getString(3));
player.setLastName(cursor.getString(4));
player.setPosition(Integer.parseInt(cursor.getString(5)));
// Adding contact to list
playerList.add(player);
} while (cursor.moveToNext());
}
// return contact list
return playerList;
}
@Override
public void onCreate(SQLiteDatabase arg0) {
// TODO Auto-generated method stub
}
@Override
public void onUpgrade(SQLiteDatabase arg0, int arg1, int arg2) {
// TODO Auto-generated method stub
}
}