Question

I want my application to align two field, one to left and other to extreme left of the screen. For that i am using GridLayoutManager class. Here is my code

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);

And, here is my output in simulator

Can anyone please help me to align the Button Two to the extreme right of the screen ? Any help will be appreciated.

Answer 1

Please use this following class.

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);
 }


}

And add field this way.

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

More detail http://keraisureshvblackberry.blogspot.in/2012/02/there-are-very-common-there-there-are.html

Hope helpfull..