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在blackberry的网格布局中将字段向右对齐

blackberry

在blackberry的网格布局中将字段向右对齐,blackberry,Blackberry,我希望我的应用程序对齐两个字段，一个在屏幕左侧，另一个在屏幕最左侧。为此，我使用GridLayoutManager类。这是我的密码 GridFieldManager gridFieldManager = new GridFieldManager(2,2, GridFieldManager.PREFERRED_SIZE_WITH_MAXIMUM); gridFieldManager.add(new ButtonField("Button One"), Field.FIELD_HCENTER);

我希望我的应用程序对齐两个字段，一个在屏幕左侧，另一个在屏幕最左侧。为此，我使用GridLayoutManager类。这是我的密码

GridFieldManager gridFieldManager = new GridFieldManager(2,2, GridFieldManager.PREFERRED_SIZE_WITH_MAXIMUM); 

gridFieldManager.add(new ButtonField("Button One"), Field.FIELD_HCENTER);  
gridFieldManager.add(new ButtonField("Button Two"), Field.FIELD_RIGHT);  

gridFieldManager.add(new ButtonField("HC", Field.FIELD_HCENTER)); 
gridFieldManager.add(new ButtonField("RT", Field.FIELD_RIGHT));

add(gridFieldManager);
这是我在模拟器中的输出

有人能帮我把按钮二对准屏幕最右边吗？任何帮助都将不胜感激

将gridFieldManager构造函数的样式参数更改为 GridFieldManager.USE_ALL_WIDTH

应该是这样的

GridFieldManager gridFieldManager = new GridFieldManager(2,2,GridFieldManager.USE_ALL_WIDTH );
您似乎应该使用合理的水平字段管理器而不是GridFieldManager。RejustizedHorizontalFieldManager不是BlackBerry SDK中包含的标准管理器，而是RIM稍后发布的一组UI组件的成员，用于帮助开发人员构建更丰富的UI界面。您必须从下载代码，将其添加到项目中，然后包括以下行：

JustifiedHorizontalFieldManager justifiedManager = new JustifiedHorizontalFieldManager(buttonOne, buttonTwo, false, USE_ALL_WIDTH );
请使用下面的类

import net.rim.device.api.ui.Field;
import net.rim.device.api.ui.container.HorizontalFieldManager;

public class HFMLeftFieldRightField extends HorizontalFieldManager {

 private Field leftField;
 private Field rightField;

 private final static int TOP_MARGIN = 0;
 private final static int LEFT_MARGIN = 30;

 public HFMLeftFieldRightField() {
  super(USE_ALL_WIDTH);
 }

 public HFMLeftFieldRightField(boolean isQatari) {
  super(USE_ALL_WIDTH | Field.FIELD_LEFT);
 }

 public void sublayout(int maxWidth, int maxHeight) {

  super.sublayout(maxWidth, maxHeight);
  int width = getWidth();

  if (rightField != null) {
   int x = width - rightField.getWidth() - LEFT_MARGIN;
   int y = TOP_MARGIN;
   setPositionChild(rightField, x, y);
  }
  if (leftField != null) {
   int y = TOP_MARGIN+rightField.getHeight()/5;
   int x = LEFT_MARGIN;
   setPositionChild(leftField, 0, y);
  }

  setExtent(maxWidth, rightField.getHeight() + TOP_MARGIN * 2);
 }

 public void setLeftButton(Field leftField) {
  this.leftField = leftField;
super.add(leftField);
 }

 public void setRightButton(Field rightField) {
  this.rightField = rightField;
  super.add(rightField);
 }


}
并以这种方式添加字段

HFMLeftFieldRightField hfm = new HFMLeftFieldRightField();
hfm.setLeftButton(new EditField("Left"));
hfm.setRightButton(new EditField("Right"));
add(hfm);
更多细节

希望对您有所帮助。

基本上，这都是对齐标志和网格的列属性的问题

将
GridFieldManager
样式更改为
Manager。使用\u ALL\u WIDTH
并将列属性设置为
GridFieldManager。自动\u SIZE
使所有可用空间最终在两列之间分配

gridFieldManager.setColumnProperty(0, GridFieldManager.AUTO_SIZE, 0);
gridFieldManager.setColumnProperty(1, GridFieldManager.AUTO_SIZE, 0);
下面的代码片段

GridFieldManager gridFieldManager = new GridFieldManager(2,2, Manager.USE_ALL_WIDTH); 
gridFieldManager.setColumnProperty(0, GridFieldManager.AUTO_SIZE, 0);
gridFieldManager.setColumnProperty(1, GridFieldManager.AUTO_SIZE, 0);

gridFieldManager.add(new ButtonField("Button One"), Field.FIELD_LEFT);  
gridFieldManager.add(new ButtonField("Button Two"), Field.FIELD_RIGHT);  
gridFieldManager.add(new ButtonField("HC"), Field.FIELD_LEFT); 
gridFieldManager.add(new ButtonField("RT"), Field.FIELD_RIGHT);

add(gridFieldManager);

GridFieldManager gridFieldManager = new GridFieldManager(1,2, Manager.USE_ALL_WIDTH); 
gridFieldManager.setColumnProperty(0, GridFieldManager.AUTO_SIZE, 0);
gridFieldManager.setColumnProperty(1, GridFieldManager.AUTO_SIZE, 0);

VerticalFieldManager vfmLeft = new VerticalFieldManager();
vfmLeft.add(new ButtonField("Button One", Field.FIELD_HCENTER));  
vfmLeft.add(new ButtonField("HC", Field.FIELD_HCENTER)); 
gridFieldManager.add(vfmLeft, Field.FIELD_LEFT);  

VerticalFieldManager vfmRight = new VerticalFieldManager();
vfmRight.add(new ButtonField("Button Two", Field.FIELD_HCENTER));  
vfmRight.add(new ButtonField("RT", Field.FIELD_HCENTER));
gridFieldManager.add(vfmRight, Field.FIELD_RIGHT);  

add(gridFieldManager); 

GridFieldManager gridFieldManager = new GridFieldManager(1,2, Manager.USE_ALL_WIDTH | Manager.USE_ALL_HEIGHT); 
gridFieldManager.setColumnProperty(0, GridFieldManager.AUTO_SIZE, 0);
gridFieldManager.setColumnProperty(1, GridFieldManager.AUTO_SIZE, 0);
gridFieldManager.setRowProperty(0, GridFieldManager.AUTO_SIZE, 0);

VerticalFieldManager vfmLeft = new VerticalFieldManager(Manager.USE_ALL_WIDTH | Manager.USE_ALL_HEIGHT);
vfmLeft.setBackground(BackgroundFactory.createSolidBackground(Color.CYAN));
gridFieldManager.add(vfmLeft);  

VerticalFieldManager vfmRight = new VerticalFieldManager(Manager.USE_ALL_WIDTH | Manager.USE_ALL_HEIGHT);
vfmRight.setBackground(BackgroundFactory.createSolidBackground(Color.GRAY));
gridFieldManager.add(vfmRight);  

add(gridFieldManager);
产生

这个稍微修改过的代码片段

GridFieldManager gridFieldManager = new GridFieldManager(2,2, Manager.USE_ALL_WIDTH); 
gridFieldManager.setColumnProperty(0, GridFieldManager.AUTO_SIZE, 0);
gridFieldManager.setColumnProperty(1, GridFieldManager.AUTO_SIZE, 0);

gridFieldManager.add(new ButtonField("Button One"), Field.FIELD_LEFT);  
gridFieldManager.add(new ButtonField("Button Two"), Field.FIELD_RIGHT);  
gridFieldManager.add(new ButtonField("HC"), Field.FIELD_LEFT); 
gridFieldManager.add(new ButtonField("RT"), Field.FIELD_RIGHT);

add(gridFieldManager);

GridFieldManager gridFieldManager = new GridFieldManager(1,2, Manager.USE_ALL_WIDTH); 
gridFieldManager.setColumnProperty(0, GridFieldManager.AUTO_SIZE, 0);
gridFieldManager.setColumnProperty(1, GridFieldManager.AUTO_SIZE, 0);

VerticalFieldManager vfmLeft = new VerticalFieldManager();
vfmLeft.add(new ButtonField("Button One", Field.FIELD_HCENTER));  
vfmLeft.add(new ButtonField("HC", Field.FIELD_HCENTER)); 
gridFieldManager.add(vfmLeft, Field.FIELD_LEFT);  

VerticalFieldManager vfmRight = new VerticalFieldManager();
vfmRight.add(new ButtonField("Button Two", Field.FIELD_HCENTER));  
vfmRight.add(new ButtonField("RT", Field.FIELD_HCENTER));
gridFieldManager.add(vfmRight, Field.FIELD_RIGHT);  

add(gridFieldManager); 

GridFieldManager gridFieldManager = new GridFieldManager(1,2, Manager.USE_ALL_WIDTH | Manager.USE_ALL_HEIGHT); 
gridFieldManager.setColumnProperty(0, GridFieldManager.AUTO_SIZE, 0);
gridFieldManager.setColumnProperty(1, GridFieldManager.AUTO_SIZE, 0);
gridFieldManager.setRowProperty(0, GridFieldManager.AUTO_SIZE, 0);

VerticalFieldManager vfmLeft = new VerticalFieldManager(Manager.USE_ALL_WIDTH | Manager.USE_ALL_HEIGHT);
vfmLeft.setBackground(BackgroundFactory.createSolidBackground(Color.CYAN));
gridFieldManager.add(vfmLeft);  

VerticalFieldManager vfmRight = new VerticalFieldManager(Manager.USE_ALL_WIDTH | Manager.USE_ALL_HEIGHT);
vfmRight.setBackground(BackgroundFactory.createSolidBackground(Color.GRAY));
gridFieldManager.add(vfmRight);  

add(gridFieldManager);
产生

最后，为了说明我前面所说的关于可用空间最终在两列之间分配的内容，下面的代码片段

GridFieldManager gridFieldManager = new GridFieldManager(2,2, Manager.USE_ALL_WIDTH); 
gridFieldManager.setColumnProperty(0, GridFieldManager.AUTO_SIZE, 0);
gridFieldManager.setColumnProperty(1, GridFieldManager.AUTO_SIZE, 0);

gridFieldManager.add(new ButtonField("Button One"), Field.FIELD_LEFT);  
gridFieldManager.add(new ButtonField("Button Two"), Field.FIELD_RIGHT);  
gridFieldManager.add(new ButtonField("HC"), Field.FIELD_LEFT); 
gridFieldManager.add(new ButtonField("RT"), Field.FIELD_RIGHT);

add(gridFieldManager);

GridFieldManager gridFieldManager = new GridFieldManager(1,2, Manager.USE_ALL_WIDTH); 
gridFieldManager.setColumnProperty(0, GridFieldManager.AUTO_SIZE, 0);
gridFieldManager.setColumnProperty(1, GridFieldManager.AUTO_SIZE, 0);

VerticalFieldManager vfmLeft = new VerticalFieldManager();
vfmLeft.add(new ButtonField("Button One", Field.FIELD_HCENTER));  
vfmLeft.add(new ButtonField("HC", Field.FIELD_HCENTER)); 
gridFieldManager.add(vfmLeft, Field.FIELD_LEFT);  

VerticalFieldManager vfmRight = new VerticalFieldManager();
vfmRight.add(new ButtonField("Button Two", Field.FIELD_HCENTER));  
vfmRight.add(new ButtonField("RT", Field.FIELD_HCENTER));
gridFieldManager.add(vfmRight, Field.FIELD_RIGHT);  

add(gridFieldManager); 

GridFieldManager gridFieldManager = new GridFieldManager(1,2, Manager.USE_ALL_WIDTH | Manager.USE_ALL_HEIGHT); 
gridFieldManager.setColumnProperty(0, GridFieldManager.AUTO_SIZE, 0);
gridFieldManager.setColumnProperty(1, GridFieldManager.AUTO_SIZE, 0);
gridFieldManager.setRowProperty(0, GridFieldManager.AUTO_SIZE, 0);

VerticalFieldManager vfmLeft = new VerticalFieldManager(Manager.USE_ALL_WIDTH | Manager.USE_ALL_HEIGHT);
vfmLeft.setBackground(BackgroundFactory.createSolidBackground(Color.CYAN));
gridFieldManager.add(vfmLeft);  

VerticalFieldManager vfmRight = new VerticalFieldManager(Manager.USE_ALL_WIDTH | Manager.USE_ALL_HEIGHT);
vfmRight.setBackground(BackgroundFactory.createSolidBackground(Color.GRAY));
gridFieldManager.add(vfmRight);  

add(gridFieldManager);
生成两个大小相等的列

然后覆盖gridfieldManager的子布局并设置子位置此处的子布局（）是多余的。您只能使用对齐标志。@MrVincenzo使用HFM意味着您需要一个特定的水平布局，并且不可能有一个通用的水平布局算法来避免重叠，同时还满足水平约束，如每个子字段上的左、右、中。HorizontalFieldManager的解决方案是忽略水平对齐标志，而仅使用垂直标志。要获得OP想要的行为，需要一个自定义管理器。@MichaelDonohue不需要添加
HorizontalFieldManager
、位置计算和许多冗余的代码行，而可以继续使用
GridFieldManager
，并通过另外两个函数调用
setColumnProperty（0，GridFieldManager.AUTO_SIZE，0）
和
setColumnProperty（1，GridFieldManager.AUTO_SIZE，0）
，并可能更改现有字段的对齐标志以实现所需的结果（仅添加两行代码）.@MichaelDonohue忘了提到应将
GridFieldManager
样式更改为
GridFieldManager。同时使用\u ALL\u WIDTH
。@MichaelDonohue我已经实现了我在回答中提到的内容。回答得很好。感谢您将其组合在一起。检查其他解决方案。