Pop-up on 8900 leave artifacts on screen

I am building a custom dialog box to display information of a menu point item. The dialog box is built like an OK dialog box (modeled on the customized document dialogue HowTo) with an added field containing text formatted in italic font. The dialogue works perfectly on simulators I've tried using JDE 4.5 (Pearl 8130, etc.) and JDE 4.7 (Storm), but shows an artifact (shadow of the popup screen) on the screen when you use 4.6.1.23 with the Simulator to 8900 JDE.

So when debugging, I found that if I use graphics.setFont () in the routine of painting of the LabelField constructor, the question is not, however, the text field is not painted in the italic font desired. If I use this.setFont () instead, I get the police desired characteristics, but the artifact appears in the context menu.

I have attached the code example, with the graphics.setFont and this.setFont (commented). The code creates a menu item (called the subject) and displays the context menu when the menu item is selected.

Any help is appreciated as I can not explain why different simulators are behave differently.

/** * Main Class */package com.myapp.testapp;

import net.rim.device.api.ui.*;import net.rim.device.api.ui.component.*;import net.rim.device.api.ui.container.*;import net.rim.device.api.system.*;

class TestApp extends UiApplication {

    private TestAppScreen mainScreen;

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

    public TestApp() {        mainScreen = new TestAppScreen(0);        LabelField title = new LabelField("TestApp", LabelField.ELLIPSIS | LabelField.USE_ALL_WIDTH);        mainScreen.setTitle(title);        pushScreen(mainScreen);    }

    static class TestAppScreen extends MainScreen {        private MenuItem menuItem;

        public TestAppScreen ( long style ) {            super( style );  

            menuItem = new MenuItem( "About" , 100000001, 1000000001 ) {                public void run( ) {                    CustomDialog customDialog = new CustomDialog();                    customDialog.show();                }                  };        }

        protected void makeMenu( Menu menu, int instance ) {            super.makeMenu( menu, instance );            menu.add( menuItem );        }    }       

    static class CustomDialog extends Dialog {        Font italicFont = Font.getDefault().derive( Font.ITALIC, 14 );

        public CustomDialog() {           super(Dialog.D_OK, "TestApp", 1, Bitmap.getPredefinedBitmap(Bitmap.EXCLAMATION), Manager.FOCUSABLE);

           LabelField _text = new LabelField( "Additional Description" , Field.USE_ALL_WIDTH | LabelField.HCENTER ) {                public void paint( Graphics graphics ) {                                    

                graphics.setColor( Color.BLACK );                this.setFont( italicFont );//                graphics.setFont( italicFont );                super.paint( graphics );                }            };            add(_text);        }

        public void paintBackground(Graphics graphics) {            graphics.setBackgroundColor( Color.RED );            graphics.clear();       }    

        public void paint( Graphics graphics) {            graphics.clear();            super.paint( graphics );        }            }}

Thanks, that did the trick. I inserted the portion of code updated below.

           LabelField _text = new LabelField( "Additional Description" , Field.USE_ALL_WIDTH | LabelField.HCENTER ) {                public void paint( Graphics graphics ) {                                                    graphics.setColor( Color.BLACK );                super.paint( graphics );                }            };            _text.setFont( italicFont );            add(_text);

Tags: BlackBerry Developers

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