Failed to open Database in android app

Question

in my app i am trying to fetch some data from database and i am showing it in a list. When i run the app in my Motorola(2.1) and in Samsung Ace(2.3) and i some of my emulators t

Answer 1

you try this code

try {
        db = this.openOrCreateDatabase("chaek.db", MODE_PRIVATE, null);
        db.close();
        openDatabase();
        createTable();
    } catch (SQLException se) {
        Toast.makeText(this, se.getMessage(), 1).show();
    }
private void openDatabase() {
    try {
db = SQLiteDatabase.openDatabase("/data/data/com.pack.store/databases/chaek.db",
                null, SQLiteDatabase.CREATE_IF_NECESSARY);
        //Toast.makeText(this, "DB was opened!", 1).show();
    } catch (SQLiteException e) {
        Toast.makeText(this, e.getMessage(), 1).show();
    }
}// createDatabase

Answer 2

public class BaseDAO extends OrmLiteSqliteOpenHelper {

public static Dao<?, Integer> instanseDao(Context cont, Class c,String Dbname) {
   File path=new File(DATABASE_PATH);
   File f = new File(DATABASE_PATH+DB_NAME);//改默认数据库目录需先手动创建数据库文件
if (!path.exists()) {
      path.mkdirs();// 创建一个目录
}
if (!f.exists()) {
      try {
          f.createNewFile();//创建文件
      } catch (IOException e) {
          e.printStackTrace();
      }
    }




//how do??????

    SQLiteDatabase db = SQLiteDatabase.openOrCreateDatabase(f,null);//创建数据库实例
    BaseDAO baseDAO = new BaseDAO(cont);
    //baseDAO.onCreate(db); 
    //baseDAO.onUpgrade(db,baseDAO.getConnectionSource(), OLD_DB_VERSION, DB_VERSION);
    //baseDAO.close();//注意要先关掉
    //db =SQLiteDatabase.openDatabase(DATABASE_PATH+DB_NAME, null, SQLiteDatabase.CREATE_IF_NECESSARY);

    try {
        Dao = baseDAO.getDao(c);
    } catch (SQLException e) {
        e.printStackTrace();
    }

    CONT=cont;
    C=c;
    DB_NAME = Dbname;
    return Dao;
}