need some advice on TrackwheelListener and display screen

public class NewApplication extends UiApplication {
    private MainScreen mainScreen;
    private static RichTextField enteredText;

        public static void main(String[] args)
        {
                NewApplication theApp = new NewApplication();
                theApp.enterEventDispatcher();
        }

        public NewApplication()
        {

            mainScreen = new MainScreen();

            enteredText = new RichTextField("", RichTextField.NON_FOCUSABLE) {
                public void paint(Graphics graphics) {
                    graphics.setColor(Color.RED);
                    graphics.clear();
                    super.paint(graphics);
                }
            };

            LabelField title = new LabelField("Banner",
              LabelField.ELLIPSIS | LabelField.USE_ALL_WIDTH | LabelField.FIELD_HCENTER) {
                public void paint(Graphics graphics) {
                    graphics.setBackgroundColor(Color.BLACK);
                    graphics.setColor(Color.WHITE);
                    graphics.clear();
                    super.paint(graphics);
                }
            };

            mainScreen.setBanner(title);

            Font myfont1 = Font.getDefault().derive(Font.BOLD, 35);
            Font myfont2 = Font.getDefault().derive(Font.BOLD, 35);
            HorizontalFieldManager aahfm = new HorizontalFieldManager() {
                public void paint(Graphics graphics) {
                    graphics.setBackgroundColor(Color.BLACK);
                    graphics.clear();
                    super.paint(graphics);
                }
            };
            RichTextField blackaa = new RichTextField("user input -->    ", RichTextField.NON_FOCUSABLE | RichTextField.USE_TEXT_WIDTH) {
                public void paint(Graphics graphics) {
                    graphics.setColor(Color.WHITE);
                    graphics.clear();
                    super.paint(graphics);
                }
            };
            blackaa.setFont(myfont1);
            enteredText.setFont(myfont2);
            aahfm.add(blackaa);
            aahfm.add(enteredText);

            //Display the main screen
            pushScreen(mainScreen);

            //Create an instance of and display the custom dialog.
            EnterDialog textEntryDialog = new EnterDialog();
            textEntryDialog.show();

            mainScreen.setTitle(aahfm);
            mainScreen.add(new SeparatorField());
        }

        //Allow the Dialog to update the text by calling this method.
        public static void setText(String newText)
        {
                enteredText.setText(newText);
        }
}

How to add the horizontalManagerField after the data of user input?
the first screen was therefore only banner
then after the input display user data using the horizontalManagerField

class EnterDialog extends Dialog implements TrackwheelListener {
     private BasicEditField entryField;

     public EnterPinDialog()
     {
         super(Dialog.D_OK, "", 1, Bitmap.getPredefinedBitmap(Bitmap.EXCLAMATION), Manager.FOCUSABLE);
         entryField = new BasicEditField("Enter data : ", "", 8, BasicEditField.EDITABLE | BasicEditField.FILTER_PIN_ADDRESS);
         add(entryField);
     }

     public boolean keyChar(char key, int status, int time)
     {
         //Override key commands
         switch (key)
         {
            case Characters.ENTER:
                //Update main class with the entered text.
                if (entryField.getTextLength() < 8) {
                    Dialog.alert("must 8 character");
                    break;
                }
                blackkeygen.setText(entryField.getText());
                this.close();
                break;
                //Override the backspace key to delete the last character.
            case Characters.BACKSPACE:
                if (entryField.getTextLength() > 0) {
                    entryField.setText(entryField.getText().substring(0, entryField.getTextLength() - 1));
                }
                break;
                //Override the escape key to delete the last character.
            case Characters.ESCAPE:
                if (entryField.getTextLength() > 0) {
                    entryField.setText(entryField.getText().substring(0, entryField.getTextLength() - 1));
                }
                else if (entryField.getTextLength() == 0) {
                    System.exit(0);
                }
                break;
                //Enter the character the user typed into the EditFie
            default:
                entryField.setText(entryField.getText() + key);
                break;
         }
         return false;
     }
     ////////////////////////////////////////////
     /// implementation of TrackwheelListener
     ////////////////////////////////////////////
     public boolean trackwheelClick(int status, int time) {
         if (entryField.getTextLength() == 8) {
             blackkeygen.setText(entryField.getText());
             this.close();
         }
         else {
             Dialog.alert("must 8 caracter");
         }
         return false;
     }

     /** Invoked when the trackwheel is released */
     public boolean trackwheelUnclick(int status, int time) {
         return false;
     }
     /** Invoked when the trackwheel is rolled. */
     public boolean trackwheelRoll(int amount, int status, int time) {
         return true;
     }
}

trackwheelunclick n trackwheelclick works correctly, but the book didn't work? I already call the roll. I missed something?

im a beginner in programming java n blackberry...
Thanks before

My first advice is to get rid of TrackwheelListener. It was not a Blackberry made with a wheel for years.

It is replaced by navigationMovement().

Tags: BlackBerry Developers

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Post edited by: alicozgo

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