Question

I have to set up 2 database for one application. I did & working fine in the emulator.Emulator minSDKVersion is : 8 real phone version is :2.2.1. It support. When I setup the database in real phone I couldn’t set up. Always I am getting unable create DB.I think one is rooted one, because when I go to File explore -> data. I couldn’t open data folder.

I have doubt in apk, because My application size is 8 MB.It contain database in asset folder. That size is 4.65 MB. But apk file size is 1.14MB.

How it will read from asset folder(In the real phone)?

I really don’t know whether it is wrong or right..These are my doubt.Please explain me.

I got error this :

Please help me.

Is there any mistake my coding part or other than anything?

Please help me.

Thanks in advance….

Edited

This is my code for copyDatabase:

public class DataBaseMasterHelper extends SQLiteOpenHelper {

// The Android's default system path of your application database.
private static String DB_PATH = "/data/data/com.android.xont.controller/databases/";
private static String DB_NAME = "MasterUserVentura_HEMA.db";
private SQLiteDatabase ventura;
private  Context myContext;
private DataBaseHelper myDbHelper;

public DataBaseMasterHelper(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();
    File Path = myContext.getDir("Data", 0);
    File DBFile = new File(Path, DB_NAME);
    System.out.println("-------" + DB_NAME);
    if(!DBFile.exists())  //Need to copy...
        copyDataBase(myContext, DBFile);

}

public boolean checkDataBase() {
    SQLiteDatabase checkDB = null;
    try {
        String myPath = DB_PATH + DB_NAME;
        checkDB = SQLiteDatabase.openDatabase(myPath, null,SQLiteDatabase.OPEN_READONLY);
    } catch (SQLiteException e) {
        e.printStackTrace();
    }

    if (checkDB != null) {
        checkDB.close();
    }

    return checkDB != null ? true : false;
}

private void copyDataBase(Context Ctxt, File DBFile) throws IOException {
    InputStream myInput = myContext.getAssets().open(DB_NAME);
    String outFileName = DB_PATH + DB_NAME;
    OutputStream myOutput = new FileOutputStream(outFileName);
    byte[] buffer = new byte[1024];
    int length;
    while ((length = myInput.read(buffer)) > 0) {
        myOutput.write(buffer, 0, length);
    }
    myOutput.flush();
    myOutput.close();
    myInput.close();


}

public void openDataBase() throws SQLException {
    String myPath = DB_PATH + DB_NAME;
    ventura = SQLiteDatabase.openDatabase(myPath, null,
            SQLiteDatabase.OPEN_READONLY);

}

@Override
public synchronized void close() {
    if (ventura != null)
        super.close();
        ventura.close();
}

and calling like this:

  MyGrid.setOnItemClickListener(new OnItemClickListener() {
        public void onItemClick(AdapterView parent, View v, int position,long id) {
            
            if (position == 0) {
                try {
                    myDbMasterHelper.createDataBase();
                    Toast.makeText(DatabaseSetupActivity.this, "Successfully copied database",Toast.LENGTH_SHORT).show();
                } catch (IOException ioe) {
                    Toast.makeText(DatabaseSetupActivity.this, "Unable to create database",Toast.LENGTH_SHORT).show();
                    ioe.printStackTrace();
                }catch (Exception ioe) {
                    Toast.makeText(DatabaseSetupActivity.this, "Unable to create database",Toast.LENGTH_SHORT).show();
                    ioe.printStackTrace();
                }
                
                
            }else if (position == 1) {
                try {
                    myDbHelper.createDataBase();
                    Toast.makeText(DatabaseSetupActivity.this, "Successfully copied database",Toast.LENGTH_SHORT).show();
                } catch (IOException ioe) {
                    Toast.makeText(DatabaseSetupActivity.this, "Unable to create database",Toast.LENGTH_SHORT).show();
                    ioe.printStackTrace();
                
                }catch (Exception ioe) {
                    Toast.makeText(DatabaseSetupActivity.this, "Unable to create database",Toast.LENGTH_SHORT).show();
                    ioe.printStackTrace();
                }
                
                

            }
        }
    });

working fine the emulator. If the file size problem, then should have get error in emulator also?

I got error like this:

 java.io.FileNotFoundException: /data/data/com.android.xont.controller/databases /MasterUserVentura_HEMA.db (No such file or directory)

I have changed e.printStackTrace() instead of throw expecption.

I think,This is not file size problem.because I did same thing in small size 300kb(testng2.db).That one also giving same error

My real phone is HTC HD2 its Windows Mobile® 6.5 Professional.

Please help me.

Thanks in advance…

Answer 1

The problem is you cannot read the data from the asset folder. Make sure the DB_NAME has form
"mydatabase.db" (including the extension). Try using lower cases, it might be case sensitive.