I am trying to understand the proper technique for dismissing a form when I am done with it.
My MIDlet, whose main class is MemberManager, displays a list of members of an organization; the user can scroll this List. In addition, it provides Commands for Adding new members, Changing data for members, and Deleting members. When they choose to Add a member, a Form containing input text fields is displayed; the user enters data into those fields and presses one of two buttons: Insert or Cancel. Insert means the user wants to add the data to the record store and Cancel means that the user has changed his mind and wants to return to the member list without adding the new data.
In my code, the logic for that displays the Add form and handles its two
commands are in a separate class, MemberAddForm. In the button handling logic in MemberAddForm, the logic for the Cancel button simply says to display an information Alert that says "Insert cancelled" for 5000 milliseconds, then return, i.e. pass control back to the class that invokes MemberAddForm, namely MemberManager. At least, that is what I would LIKE to happen ;-) Here is the actual code:
if (label.equals(CANCEL_INSERT_TEXT)) {
System.out.println(CLASS_NAME + "." + METHOD_NAME + " - User chose " +
CANCEL_INSERT_TEXT + ".");
String msg = "Insert Cancelled.";
Alert cancelled = new Alert("Action", msg, null, AlertType.INFO);
cancelled.setTimeout(5000); //milliseconds
display.setCurrent(cancelled);
return;
}
This code works but after the return is executed, I am still on the Form
that is displayed by the MemberAddForm class, not the newly refreshed
memberList from the MemberManager class. What do I need to do to end the MemberAddForm gracefully and get back to the member list in the
MemberManager class? I'm looking for something like the dispose() method that I use when I write dialogs in J2SE.
My main class, MemberManager class, extends MIDlet. My supporting class,
MemberAddForm, extends Form. Is that the right approach? I wondered if I should have MemberAddForm extend MIDlet and then have MemberManager instantiate it but the API for MIDlet says MIDlets should never attempt to create other MIDlets. I'm a little confused because my approach in J2SE would be to make MemberAddForm a dialog that is initiated by a Frame but J2ME doesn't seem to have the concept of a
dialog.
Can anyone shed some light on this for me?
