我正在使用 ormlite.android.4.31.jar 我有典型的 DatabaseHelper
public class DatabaseHelper extends OrmLiteSqliteOpenHelper {
private static final String DATABASE_NAME = "realestate.db";
private static final int DATABASE_VERSION = 1;
private Dao<TabKraj, Integer> krajDao;
public DatabaseHelper(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
}
@Override
public void onCreate(SQLiteDatabase sqliteDatabase, ConnectionSource connectionSource) {
try {
TableUtils.createTable(connectionSource, TabKraj.class);
initData();
} catch (Exception e) {
Log.e(DatabaseHelper.class.getName(), "Unable to create datbases", e);
}
}
@Override
public void onUpgrade(SQLiteDatabase sqliteDatabase, ConnectionSource connectionSource, int oldVer, int newVer) {
try {
TableUtils.dropTable(connectionSource, TabKraj.class, true);
onCreate(sqliteDatabase, connectionSource);
} catch (SQLException e) {
Log.e(DatabaseHelper.class.getName(), "Unable to upgrade database from version " + oldVer + " to new " + newVer, e);
}
}
public Dao<TabKraj, Integer> getKrajDao() throws SQLException{
if (krajDao == null) {
krajDao = getDao(TabKraj.class);
}
return krajDao;
}
private void initData(){
Log.d(Constants.DEBUG_TAG, "data initiating");
TabKraj k1 = new TabKraj();
TabKraj k2 = new TabKraj();
k1.setNazov("Kosicky kraj");
k1.setId(1);
try {
getKrajDao().create(k1);
} catch (SQLException e) {
Log.e(Constants.DEBUG_TAG, "Data initialing ERROR");
}
}
}
应用已卸载,数据已清除...
我正在从 Eclipse 以 Debug模式运行应用程序,调用了 DatabaseHleper
的构造函数,但未调用 onCreate()
。
问题出在哪里?
最佳答案
正如@k-mera 所说:
数据库文件只会在您在数据库中执行一些操作(如“插入”)时创建。
关于android - Ormlite 数据库助手 - onCreate() 未调用,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/10260137/