Question

Hello I’m making a budget application that will allow you to look at expeances entered and if need be delete them I can call the method run thro it and it wont have a issue but when I check to see if it worked it hasnt I’ve tried but cant figure out why this doesn’t work. I use a alert dialog to confirm that they want to delete.

AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(
                    this);

                // set title
                alertDialogBuilder.setTitle("DELETE "+position);

                // set dialog message
                alertDialogBuilder
                    .setMessage("Are you sure you whant to delete Expeance "+position)
                    .setCancelable(false)

                    .setPositiveButton("yes", new DialogInterface.OnClickListener() {

                        public void onClick(DialogInterface dialog, int which) {
                            // TODO Auto-generated method stub
                            String[]    po = position.split(" ");
                            String  date = po[0];
                            date = date +".tar.gz";
                            entry.open();
                            entry.deleteByDate(date);
                            entry.close();
                        recreate();
                        }

                    })
                    .setNegativeButton("No",new DialogInterface.OnClickListener() {
                        public void onClick(DialogInterface dialog,int id) {
                            // if this button is clicked, just close
                            // the dialog box and do nothing
                            dialog.cancel();
                        }
                    });

                    // create alert dialog
                    AlertDialog alertDialog = alertDialogBuilder.create();

                    // show it
                    alertDialog.show();

and here is the code for the method

public SQLiteDatabase deleteByDate(String date2) 
        {
            // TODO Auto-generated method stub

            ourDatabase.delete(DATABASE_TABLE2, KEY_DATE + " =?", new String[] { date2 });
            ourDatabase.delete(DATABASE_TABLE4, KEY_DATE + " =?", new String[] { date2 });
            return ourDatabase;

        }

Answer 1

use Pattern.compile for replacing “/” with “-“ as instead of date.replace("/", "_"):

    Pattern p = Pattern.compile("/");
    String  date = po[0];
    Matcher matcher = p.matcher(date);
    date = matcher.replaceAll("_");

    date = date +".tar.gz";
    //your code here....