Question

我有一个GridFieldManager，有3列，我想像这样对齐它们的内容：

    |Title left | Title Center | Title Right|

问题是我使用的是RichTextField而不是LabelField，因为我希望每个标题的文本都像这样：

    |Title left | Title Center   | Title Right  |
    |is wrapped | is wrapped too | also wrapped |

如果我使用RichTextField而不是LabelField，则忽略对齐。这是我的代码：

public class CustomGridFieldextends GridFieldManager {

    private int numColumns = 3;
    private int margin = 5;

    public CustomGridField(String leftText, String centerText, String rightText) {  
        super(1, 3, GridFieldManager.USE_ALL_WIDTH);
        setPadding(0, margin, 0, margin);

        int columnWidth = (Display.getWidth() / numColumns);
        for (int i = 0; i < numColumns; i++) {
            setColumnProperty(i, GridFieldManager.FIXED_SIZE, columnWidth);
        }

        // leftmost text
        RichTextField leftLabel = new RichTextField(leftText){
            protected void paint(Graphics g) {
                g.setColor(Color.WHITE);
                g.setFont(getFont().derive(Font.BOLD));
                super.paint(g);
            }
        };
        leftLabel.setFont(getFont().derive(Font.BOLD));
        add(leftLabel, Field.FIELD_LEFT);

        // center text
        RichTextField centerLabel = new RichTextField(centerText){
            protected void paint(Graphics g) {
                g.setFont(getFont().derive(Font.BOLD));
                g.setColor(Color.WHITE);
                super.paint(g);
            }
        };
        centerLabel.setFont(getFont().derive(Font.BOLD));
        add(centerLabel, Field.FIELD_HCENTER);


        // rightmost text
        RichTextField rightLabel = new RichTextField(rightText) {
            protected void paint(Graphics g) {
                g.setFont(getFont().derive(Font.BOLD));
                g.setColor(Color.WHITE);
                super.paint(g);
            }
        };
        rightLabel.setFont(getFont().derive(Font.BOLD));
        add(rightLabel, Field.FIELD_RIGHT);
    } 

    protected void paintBackground(Graphics g) {
        // draw a nice background...
    }
}

Answer 1

找到答案，结果发现我在创建RichTextFields时必须使用这种样式：

new RichTextField("text on left",RichTextField.TEXT_ALIGN_LEFT);
new RichTextField("text on center",RichTextField.TEXT_ALIGN_HCENTER);
new RichTextField("text on right",RichTextField.TEXT_ALIGN_RIGHT);

现在我正在进行抓取......

PD：在此处找到：http://v4ks1n.wordpress.com/2009/04/16/richtextfield-alignment/

GridFieldManager Blackberry对齐字段

1 个答案: