Set LeftField and Right Filed

There are very common there are need to set one labelField on left side and Button or DropDownField on right side of the screen. Today i think this will help full for developed sample HoeizonalFiedlManager example that set Field Rightside and Left side.

Following code will help full.

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);
 }


}

Following code add on MainScreen where you want to add Filed.

HFMLeftFieldRightField hfm = new HFMLeftFieldRightField();
    hfm.setLeftButton(new LabelField("Select Country"));
    ObjectChoiceField objChoField = new ObjectChoiceField();
    String[] str = {"India","Germany","Australia","Canada"};
    objChoField.setChoices(str);
    hfm.setRightButton(objChoField);
 
    Bitmap borderBitmap = Bitmap.getBitmapResource("img/rounded-border.png");
    hfm.setBorder(BorderFactory.createBitmapBorder(new XYEdges(12,12,12,12), borderBitmap));
    add(hfm);

Output will like this.