newscreen.java

Mobile Phone JSR 177 midlet example

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package satsa;

import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.Form;
import javax.microedition.lcdui.TextField;

// Displays a form to enter new messages
class NewScreen
  extends Form
  implements CommandListener
{

  private final SATSAMIDlet midlet;
  private final Command commandBack =
    new Command("Back", Command.BACK, 1);
  private final Command commandSave =
    new Command("Save", Command.ITEM, 1);
  TextField messageField;
  TextField passwordField;

  NewScreen(SATSAMIDlet midlet)
  {
    super(null);
    this.midlet = midlet;
  }
  
  public void commandAction(Command c, Displayable d)
  {
    if (c==commandBack)
    {
      midlet.showMessageList();
    }
    if (c==commandSave)
    {
      midlet.addNewMessage(messageField.getString(),
          passwordField.getString());
    }
  }

  void createForm()
  {
    deleteAll();
    setTitle("Add new message ");
    messageField = new TextField("Message",
        "",
        80,
        TextField.ANY);
    // Notice that the max length is 16 as indicated for the AES key
    passwordField = new TextField("Password",
        "",
        16,
        TextField.PASSWORD);
    append(messageField);
    append(passwordField);
    addCommand(commandBack);
    addCommand(commandSave);
    setCommandListener(this);
  }
}