Blackberry - get all child fields of control

Question

I am having one horizontal field manager i am adding some components at run time.I want to know which are the components i have placed in the horizontalfieldmanager.Can any one give me idea how to find which are the components are present in horizontal field manager. regards, s.kumaran.

Answer 1

Something like this should work:

public Field[] getFieldsOfManager(Manager manager) {
 Field[] fields = new Field[manager.getFieldCount()];
    for( int i = 0; i < manager.getFieldCount(); i++ )
    {
        fields[i] = manager.getField( i );        
    }
    return fields;
}

Answer 2

+1 Jan, but what about inner Managers? Some recursion will do the thing.

class Scr extends MainScreen implements FieldChangeListener {
    HorizontalFieldManager mMainPanel;
    VerticalFieldManager mVerticalPanel;
    ButtonField mPrintButton;

    public Scr() {
     add(new LabelField("Title", FIELD_HCENTER));
     mMainPanel = new HorizontalFieldManager();
     add(mMainPanel);
     mVerticalPanel = new VerticalFieldManager();
     mMainPanel.add(mVerticalPanel);
     for (int i = 0; i < 5; i++) {
      HorizontalFieldManager hfm = new HorizontalFieldManager();
      hfm.add(new LabelField("Label " + i, FIELD_LEFT));
      hfm.add(new BasicEditField(FIELD_RIGHT));
      mVerticalPanel.add(hfm);
     }
     mPrintButton = new ButtonField("Print Console All Fields",
       ButtonField.CONSUME_CLICK | FIELD_HCENTER);
     mPrintButton.setChangeListener(this);
     add(mPrintButton);
    }

    private Field[] getAllFields(Manager manager) {
     int cnt = manager.getFieldCount();
     Field[] result = new Field[cnt];

     for (int i = 0; i < cnt; i++) {
      Field field = manager.getField(i);
      result[i] = field;

      if (field instanceof Manager) {
       Field[] childFields = getAllFields((Manager) field);
       result = appendArray(result, childFields);
      }
     }
     return result;
    }

    private Field[] appendArray(Field[] target, Field[] source) {
     for (int i = 0; i < source.length; i++) {
      Arrays.add(target, source[i]);
     }
     return target;
    }

    public void fieldChanged(Field field, int context) {
     if (mPrintButton == field) {
      Field[] fields = getAllFields(getMainManager());
      for (int i = 0; i < fields.length; i++) {
       System.out.print("\nN " + i + "; Class: "
         + fields[i].getClass().getName());
      }
     }
    }
}