自定义领域专注于黑莓

Question

我创建了一个customUi类，我创建了3个fiels作为1个标签和2个按钮文件....

所以我创建了customui并传递了文件名......

喜欢

public class CustomTextField extends Manager {

    Field field ;
//passing 3 names to the construcor

protected void sublayout(int width, int height) {
        // TODO Auto-generated method stub

        int fieldCount = getFieldCount();
        int screenWidth = Display.getWidth();
        int yOffset =0;
        for(int i=0; i<fieldCount; i++)
        {

        field= getField(i);
        layoutChild(field, screenWidth, 100 );
        setPositionChild(field, (screenWidth-field.getWidth())>>1, yOffset);
        yOffset += field.getHeight()+5;
            }

        setExtent(screenWidth, yOffset);
    }

protected void paintBackground(Graphics g) {
        if(field.isFocus())
        {
        //g.setBackgroundColor(Color.ALICEBLUE);
        int oldColor = g.getColor();
        g.setColor(Color.DARKBLUE);
        g.drawRoundRect(0, 0, getWidth(), getHeight(), Graphics.ALL_ROUNDED_RECT_CORNERS, 60, 60);
        g.setColor(oldColor);
        }
    }

Answer 1

不要覆盖经理内部的paintBackground(Graphics g)。在子字段类中重写它。儿童领域的责任是如何呈现其聚焦状态。