在blackberry的网格布局中将字段右对齐
在blackberry的网格布局中将字段右对齐
提问于 2012-04-04 20:15:37
我希望我的应用程序对齐两个字段，一个到屏幕的左边，另一个到屏幕的最左边。为此，我使用了GridLayoutManager类。以下是我的代码
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
谁能帮我把Button Two对齐到屏幕的最右边？任何帮助都将不胜感激。
回答 4
Stack Overflow用户
回答已采纳
发布于 2012-04-04 22:05:51
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);更多详细信息http://keraisureshvblackberry.blogspot.in/2012/02/there-are-very-common-there-there-are.html
希望能有所帮助..。
Stack Overflow用户
发布于 2012-04-10 10:23:34
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.USE_ALL_WIDTH，并将列属性设置为GridFieldManager.AUTO_SIZE，这样就可以在两列之间均匀地划分所有可用的空间。
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);产生
这个稍微修改过的代码片段
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); 产生
最后，为了说明我前面所说的关于可用空间在两列之间平均分配的内容，下面的代码片段
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。
Stack Overflow用户
发布于 2012-04-04 21:38:27
看起来你应该使用JustifiedHorizontalFieldManager而不是GridFieldManager。JustifiedHorizontalFieldManager不是RIM中包含的标准管理器，而是BlackBerry后来发布的一组UI组件中的一个成员，用于帮助开发人员构建更丰富的UI界面。您必须从here下载代码，将其添加到您的项目中，然后包含以下行：
JustifiedHorizontalFieldManager justifiedManager = new JustifiedHorizontalFieldManager(buttonOne, buttonTwo, false, USE_ALL_WIDTH );页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/10010884
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