在Blackberry中使字段水平居中

时间:2012-01-07 12:41:26

标签: layout blackberry field center

这些是6个仪表板按钮:需要水平居中

Dashboard Buttons

  ![\[1\]: http://i.stack.imgur.com/jg6q8.png][1]

目前的代码如下:

            DashboardButtons = new VerticalFieldManager(Field.USE_ALL_WIDTH
                            | VerticalFieldManager.FIELD_HCENTER));

                    ButtonRow1 = new HorizontalFieldManager(Field.USE_ALL_WIDTH
                            | HorizontalFieldManager.FIELD_HCENTER);
                    ButtonRow2 = new HorizontalFieldManager(Field.USE_ALL_WIDTH
                            | HorizontalFieldManager.FIELD_HCENTER);

字段的定义如下:                   b1 = new Field(Field.FOCUSABLE | FIELD_HCENTER)

在字段中我添加了按钮图像。

顶部的图标(居中)直接添加到使用Field.USE_ALL_WIDTH定义的VerticalFieldManager中。 VerticalFieldManager.FIELD_HCENTER`和带有FIELD_HCENTER的图标字段

1 个答案:

答案 0 :(得分:1)

我根据你可以修改的代码给你一个示例代码:

  

如果您想要关注图像,您应该在ONFOCUS中提供一个图像,在UNFOCUS上提供另一个图像。

以下是示例代码:

public class LoadingScreen extends MainScreen
{   
Font font;
VerticalFieldManager vertical;
Bitmap bitmap=Bitmap.getBitmapResource("btn_send.png");
BitmapField bitmapField;
ButtonField plus,minus;
int px=0;
int py=0;
public LoadingScreen()
{
    font=Font.getDefault().derive(Font.BOLD, 18);           
    createGUI();
}

public void createGUI() 
{
    vertical=new VerticalFieldManager(USE_ALL_WIDTH);

    HorizontalFieldManager hor=new HorizontalFieldManager(Field.FIELD_HCENTER);

    BitmapField bitmapField=new BitmapField(bitmap);        
    hor.add(bitmapField);
    vertical.add(hor);

    HorizontalFieldManager hr=new HorizontalFieldManager(Field.FIELD_HCENTER);

    BitmapField bitmapField1=new BitmapField(bitmap);       
    hr.add(bitmapField1);

    BitmapField bitmapField2=new BitmapField(bitmap);
    hr.add(bitmapField2);

    BitmapField bitmapField3=new BitmapField(bitmap);
    hr.add(bitmapField3);
    hr.setPadding(10, 0, 10, 0);
    vertical.add(hr);

    HorizontalFieldManager hr1=new HorizontalFieldManager(Field.FIELD_HCENTER);

    BitmapField bitmapField4=new BitmapField(bitmap);       
    hr1.add(bitmapField4);

    BitmapField bitmapField5=new BitmapField(bitmap);
    hr1.add(bitmapField5);

    BitmapField bitmapField6=new BitmapField(bitmap);
    hr1.add(bitmapField6);
    hr1.setPadding(10, 0, 10, 0);

    vertical.setBackground(BackgroundFactory.createSolidBackground(Color.GREEN));       
    vertical.add(hr1);      
    add(vertical);
}       
}

我在下面有这样的图片:

Images in Center