Can't copy sqlite database from assets folder in Android

Question

I have been trying to copy a sqlite database file from assets folder so that i create a sqlite database and use it in my program, here is the code:-

first the

Answer 1

Make your DbHelper like this,

public class DBHandler extends SQLiteOpenHelper {
protected static final String DATABASE_NAME_PRODUCTION = "productionComments.db";
private Context context;

public DBHandler(Context context, String name, SQLiteDatabase.CursorFactory factory,
                     int version) {
        super(context, name, factory, DATABASE_VERSION);
        this.context = context;
    }

       //copy database from assets folder (.sqlite) file to an empty database
        public void copyDataBase() throws IOException{

        //Open your local db as the input stream
        InputStream myInput = context.getAssets().open("prod.db");

        // Path to the just created empty db
        String outFileName = "/data/data/com.qarun.qpcbeta/databases/"+DATABASE_NAME_PRODUCTION;

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

        //transfer bytes from the input file to the output file
        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();
    }