[Java for Android App Development] achtuhan M:
I want to deploy a database along with my apk , so i modified my sqliteopenhelper as follows:

public class openingclass extends SQLiteOpenHelper
{
public openingclass(Context c) {
super(c,Db_NAME, null, DB_VERSION);
}
public void createDataBase() {

boolean dbExist;
try {

dbExist = checkDataBase();

} catch (SQLiteException e) {

e.printStackTrace();
throw new Error("database dose not exist");

}

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

try {

copyDataBase();

} catch (IOException e) {

e.printStackTrace();
throw new Error("Error copying database");

}
//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();

}

}

/**
* 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.
throw new Error("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{

//copyDataBase();
//Open your local db as the input stream
InputStream myInput = c1.getAssets().open(Db_NAME);

// Path to the just created empty db
String outFileName = DB_PATH +"/"+ Db_NAME;
File databaseFile = new File(DB_PATH);
// check if databases folder exists, if not create one and its subfolders
if (!databaseFile.exists()){
databaseFile.mkdir();
}

//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();

}

@Override
public synchronized void close() {

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

super.close();

}

@Override
public void onCreate(SQLiteDatabase arg0) {
String S = "create table " +
TABLE_NAME +
" (" +
TABLE_COL_MAIL + " text primary key," +
TABLE_COL_NAME + " text," +
TABLE_COL_PASS + " text," +
TABLE_COL_PHO + " text," +
TABLE_COL_ADD + " text," +
TABLE_COL_GEN + " text," +
TABLE_COL_DOB + " text" +
");";
arg0.execSQL(S);

String S1 = "create table " +
SECOND_TABLE_NAME +
" (" +
TABLE_COL_USER + " text," +
TABLE_COL_PRODUCT + " text," +
TABLE_COL_QUANTITY + " integer" +
");";
arg0.execSQL(S1);

}

@Override
public void onUpgrade(SQLiteDatabase arg0, int arg1, int arg2) {
// TODO Auto-generated method stub

}

The problem which people on other forums tell me is to do with the path. I have hard coded the path in my datamanager class as follows:

private final String DB_PATH="/data/data/com.example.shopkart/databases";
private final String Db_NAME = "dbshopkart.db";

I get the following error in my logcat on running on the device:

05-02 16:20:16.039: E/AndroidRuntime(9916): FATAL EXCEPTION: main
05-02 16:20:16.039: E/AndroidRuntime(9916): java.lang.Error: database does't exist yet.
05-02 16:20:16.039: E/AndroidRuntime(9916): at com.example.shopkart.datamanager$openingclass.checkDataBase(datamanager.java:112)
05-02 16:20:16.039: E/AndroidRuntime(9916): at com.example.shopkart.datamanager$openingclass.createDataBase(datamanager.java:63)
05-02 16:20:16.039: E/AndroidRuntime(9916): at com.example.shopkart.datamanager$openingclass.<init>(datamanager.java:56)
05-02 16:20:16.039: E/AndroidRuntime(9916): at com.example.shopkart.datamanager.<init>(datamanager.java:48)
05-02 16:20:16.039: E/AndroidRuntime(9916): at com.example.shopkart.MainActivity.onCreate(MainActivity.java:50)
05-02 16:20:16.039: E/AndroidRuntime(9916): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
05-02 16:20:16.039: E/AndroidRuntime(9916): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1615)
05-02 16:20:16.039: E/AndroidRuntime(9916): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1667)
05-02 16:20:16.039: E/AndroidRuntime(9916): at android.app.ActivityThread.access$1500(ActivityThread.java:117)
05-02 16:20:16.039: E/AndroidRuntime(9916): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:935)
05-02 16:20:16.039: E/AndroidRuntime(9916): at android.os.Handler.dispatchMessage(Handler.java:99)
05-02 16:20:16.039: E/AndroidRuntime(9916): at android.os.Looper.loop(Looper.java:130)
05-02 16:20:16.039: E/AndroidRuntime(9916): at android.app.ActivityThread.main(ActivityThread.java:3689)
05-02 16:20:16.039: E/AndroidRuntime(9916): at java.lang.reflect.Method.invokeNative(Native Method)
05-02 16:20:16.039: E/AndroidRuntime(9916): at java.lang.reflect.Method.invoke(Method.java:507)
05-02 16:20:16.039: E/AndroidRuntime(9916): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:842)
05-02 16:20:16.039: E/AndroidRuntime(9916): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600)
05-02 16:20:16.039: E/AndroidRuntime(9916): at dalvik.system.NativeStart.main(Native Method)
05-02 16:25:32.835: E/Database(10275): sqlite3_open_v2("/data/data/com.example.shopkart/databases/dbshopkart.db", &handle, 1, NULL) failed
05-02 16:25:32.835: W/dalvikvm(10275): threadid=1: thread exiting with uncaught exception (group=0x40015578)
05-02 16:25:32.835: E/AndroidRuntime(10275): FATAL EXCEPTION: main
05-02 16:25:32.835: E/AndroidRuntime(10275): java.lang.Error: database does't exist yet.
05-02 16:25:32.835: E/AndroidRuntime(10275): at com.example.shopkart.datamanager$openingclass.checkDataBase(datamanager.java:112)
05-02 16:25:32.835: E/AndroidRuntime(10275): at com.example.shopkart.datamanager$openingclass.createDataBase(datamanager.java:63)
05-02 16:25:32.835: E/AndroidRuntime(10275): at com.example.shopkart.datamanager$openingclass.<init>(datamanager.java:56)
05-02 16:25:32.835: E/AndroidRuntime(10275): at com.example.shopkart.datamanager.<init>(datamanager.java:48)
05-02 16:25:32.835: E/AndroidRuntime(10275): at com.example.shopkart.MainActivity.onCreate(MainActivity.java:50)
05-02 16:25:32.835: E/AndroidRuntime(10275): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
05-02 16:25:32.835: E/AndroidRuntime(10275): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1615)
05-02 16:25:32.835: E/AndroidRuntime(10275): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1667)
05-02 16:25:32.835: E/AndroidRuntime(10275): at android.app.ActivityThread.access$1500(ActivityThread.java:117)
05-02 16:25:32.835: E/AndroidRuntime(10275): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:935)
05-02 16:25:32.835: E/AndroidRuntime(10275): at android.os.Handler.dispatchMessage(Handler.java:99)
05-02 16:25:32.835: E/AndroidRuntime(10275): at android.os.Looper.loop(Looper.java:130)
05-02 16:25:32.835: E/AndroidRuntime(10275): at android.app.ActivityThread.main(ActivityThread.java:3689)
05-02 16:25:32.835: E/AndroidRuntime(10275): at java.lang.reflect.Method.invokeNative(Native Method)
05-02 16:25:32.835: E/AndroidRuntime(10275): at java.lang.reflect.Method.invoke(Method.java:507)
05-02 16:25:32.835: E/AndroidRuntime(10275): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:842)
05-02 16:25:32.835: E/AndroidRuntime(10275): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600)
05-02 16:25:32.835: E/AndroidRuntime(10275): at dalvik.system.NativeStart.main(Native Method)

The database seems to be not found.I have even put the database in the assets folder.Please help!