RichTextEdit带有多彩文字？

RichTextEdit

RichTextEdit

ITALIC

BOLD

RichTextEdit.paint

public final class RichTextFieldSample extends UiApplication 
{ 
    public static void main(String[] args) 
    { 
        RichTextFieldSample theApp = new RichTextFieldSample(); 
        theApp.enterEventDispatcher(); 
    } 
    public RichTextFieldSample() 
    { 
        String richText = "This is how you create text with formatting!!!";
        Font fonts[] = new Font[3]; 
        int[] offset = new int[4]; 
        byte[] attribute = new byte[3]; 
        fonts[0] = Font.getDefault(); 
        fonts[1] = Font.getDefault().derive(Font.BOLD); 
        fonts[2] = Font.getDefault().derive(Font.BOLD | Font.ITALIC); 
        offset[0] = 0; 
        attribute[0] = 2; 
        offset[1] = 4; 
        attribute[1] = 0; 
        offset[2] = 33; 
        attribute[2] = 1; 
        offset[3] = richText.length(); 

        RichTextField rtField = new RichTextField 
          (richText, offset, attribute, fonts, 
           RichTextField.USE_TEXT_WIDTH) {
                protected void paint(Graphics graphics) {
                    graphics.clear();
                    graphics.setColor(0x0000FF);
                    super.paint(graphics);
                }
        };

        MainScreen mainScreen = new MainScreen(); 
        mainScreen.setTitle(new LabelField 
          ("RichTextFieldSample Sample", 
            LabelField.ELLIPSIS | LabelField.USE_ALL_WIDTH)); 
        mainScreen.add(rtField); 
        pushScreen(mainScreen); 
    } 
}