https://stackoverflow.com/questions/16636017/e-sqlitelog1893-14-cannot-open-file-at-line-30176-of-00bb9c9ce4


Here is my code:

public class DataBaseHelper extends SQLiteOpenHelper {

// The Android's default system path of your application database.
private static String DB_PATH = "/data/data/com.example.koday/databases/";

private static String DB_NAME = "dizionario7.sqlite";

private SQLiteDatabase myDataBase;

private final Context myContext;

/**
 * Constructor Takes and keeps a reference of the passed context in order to
 * access to the application assets and resources.
 * 
 * @param context
 */
public DataBaseHelper(Context context) {

    super(context, DB_NAME, null, 1);
    this.myContext = context;
}

/**
 * Creates a empty database on the system and rewrites it with your own
 * database.
 * */
public void createDataBase() throws IOException {

    boolean dbExist = checkDataBase();

    if (dbExist) {
        // do nothing - database already exist
    } else {

        // By calling this method and empty database will be created into
        // the default system path
        // of your application so we are gonna be able to overwrite that
        // database with our database.
        this.getReadableDatabase();

        try {

            copyDataBase();

        } catch (IOException e) {

            throw new Error("Error copying database");

        }
    }

}

/**
 * Check if the database already exist to avoid re-copying the file each
 * time you open the application.
 * 
 * @return true if it exists, false if it doesn't
 */
private boolean checkDataBase() {

    SQLiteDatabase checkDB = null;

    try {
        String myPath = DB_PATH + DB_NAME;
        checkDB = SQLiteDatabase.openDatabase(myPath, null,
                SQLiteDatabase.OPEN_READONLY);

    } catch (SQLiteException e) {

        // database does't exist yet.

    }

    if (checkDB != null) {

        checkDB.close();

    }

    return checkDB != null ? true : false;
}

/**
 * Copies your database from your local assets-folder to the just created
 * empty database in the system folder, from where it can be accessed and
 * handled. This is done by transfering bytestream.
 * */
private void copyDataBase() throws IOException {

    // Open your local db as the input stream
    InputStream myInput = myContext.getAssets().open(DB_NAME);

    // Path to the just created empty db
    String outFileName = DB_PATH + DB_NAME;

    // Open the empty db as the output stream
    OutputStream myOutput = new FileOutputStream(outFileName);

    // transfer bytes from the inputfile to the outputfile
    byte[] buffer = new byte[1024];
    int length;
    while ((length = myInput.read(buffer)) > 0) {
        myOutput.write(buffer, 0, length);
    }

    // Close the streams
    myOutput.flush();
    myOutput.close();
    myInput.close();

}

public void openDataBase() throws SQLException {

    // Open the database
    String myPath = DB_PATH + DB_NAME;
    myDataBase = SQLiteDatabase.openDatabase(myPath, null,
            SQLiteDatabase.OPEN_READONLY);

}

@Override
public synchronized void close() {

    if (myDataBase != null)
        myDataBase.close();

    super.close();

}

@Override
public void onCreate(SQLiteDatabase db) {

}

@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {

}

// Add your public helper methods to access and get content from the
// database.
// You could return cursors by doing "return myDataBase.query(....)" so it'd
// be easy
// to you to create adapters for your views.

// Getting single contact
String getkword(String word) {
    SQLiteDatabase db = this.getReadableDatabase();

    Cursor cursor = db.query("data",
            new String[] { "_id", "english", "korean" }, "english" + "=?",
            new String[] { word }, null, null, null, null);
    if (cursor != null)
        cursor.moveToFirst();

    String kword = cursor.getString(2);
    // return contact
    db.close();
    return kword;

}

// Getting All Contacts
public Cursor getCursor() {
    // Select All Query
    String selectQuery = "SELECT  * FROM " + "data";

    SQLiteDatabase db = this.getWritableDatabase();
    Cursor cursor = db.rawQuery(selectQuery, null);

    // looping through all rows and adding to list

    return cursor;
}

}

EDIT EDIT EDIT EDIT I have set permission in my manifest:

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

Thanks for the help!

    up vote14down voteaccepted
    +50

    I think the problem is with the location of the db for different version of SDK. please try this

    private static String DB_PATH = "";
    public DataBaseHelper(Context context) {
        super(context, DB_NAME, null, 1);// 1? its Database Version
        if(android.os.Build.VERSION.SDK_INT >= 4.2){
            DB_PATH = context.getApplicationInfo().dataDir + "/databases/";         
        } else {
           DB_PATH = "/data/data/" + context.getPackageName() + "/databases/";
        }
        this.mContext = context; 
    }  

    Check this out

    How to use an existing database with an Android application

      A very wild guess is that you don't have required permissions in your android manifest. Besides, I am using the same piece of code for one of my projects replace checkDatabase() with:

      private boolean checkDataBase() {
      
          File dbFile = new File(DATABASE_PATH + DATABASE_NAME);
          return dbFile.exists();
      }

      Also for the path use:

      public static String getDBPath() {
          return Environment.getDataDirectory() + "/data/"
                  + context.getPackageName() + "/databases/";
      }

        I had the same error. I found out that I was entering the database while importing and updating the tables in the database. so I conclude that if you are updating your data base tables you can't use them at the same moment.