我可以使用滚动条件向ListField添加VerticalFieldManager吗？这样我就可以滚动ListField和VertcalFieldManager。
这里是发布代码的。抱歉，我发布了经理，无法发布整个代码。
mainManager = new CustomVerticalFieldManager(Display.getWidth(),
Display.getHeight(), backgroundBitmap,
Manager.NO_VERTICAL_SCROLL
| HorizontalFieldManager.USE_ALL_WIDTH
| Manager.FIELD_HCENTER) {
protected void sublayout(int maxWidth, int maxHeight) {
super.sublayout(Display.getWidth(), Display.getHeight());
setExtent(Display.getWidth(), Display.getHeight());
setPositionChild(middleManager, 5,
(headerManager.getContentHeight() + 30));
setPositionChild(sliderBitmapField, 20, 37);
setPositionChild(treeManager, 10,
(30 + middleManager.getExtent().height + headerManager
.getContentHeight()));
setPositionChild(totalFareLabel, 20, Display.getHeight() - 60);
setPositionChild(
footerManager,
((Display.getWidth() / 2) - (footerManager.getWidth() / 2)),
Display.getHeight() - (footerManager.getHeight() + 3));
middleManager = new CustomVerticalFieldManager(Display.getWidth() - 20,
90, Manager.NO_VERTICAL_SCROLL | Manager.VERTICAL_SCROLLBAR)
{
protected void sublayout(int maxWidth, int maxHeight) {
super.sublayout(Display.getWidth() - 20, 90);
setExtent(Display.getWidth() - 20, 90);
setPositionChild(labelManager, 3, 5);
setPositionChild(labelDescription, 8,
labelManager.getHeight() + 5);
setPositionChild(lablelDepart, 8, labelManager.getHeight()
+ labelDescription.getHeight() + 10);
}
treeManager = new CustomVerticalFieldManager( Manager.USE_ALL_WIDTH | Field.FIELD_HCENTER | Manager.VERTICAL_SCROLL) {
protected void sublayout(int maxWidth, int maxHeight) {
super.sublayout(
Display.getWidth() - 20,
Display.getHeight()
- (104 + middleManager.getHeight() + headerManager
.getHeight()) -100);
setExtent(
Display.getWidth() - 20,
Display.getHeight()
- (104 + middleManager.getHeight() + headerManager
.getHeight()) -100);
}
CustomListField lF = new CustomListField(listData);
treeManager.add(lF);
以下是CustomListField
public class CustomListField extends ListField implements ListFieldCallback {
private Vector _listData;
private int _MAX_ROW_HEIGHT = 30;
private boolean isFocused = false;
public CustomListField(Vector data) {
_listData = data;
setSize(_listData.size());
setSearchable(true);
setCallback(this);
setRowHeight(_MAX_ROW_HEIGHT);
}
protected void drawFocus(Graphics graphics, boolean on) {
XYRect rect = new XYRect();
getFocusRect(rect);
boolean oldDrawStyleFocus = graphics
.isDrawingStyleSet(Graphics.DRAWSTYLE_FOCUS);
try {
if (on) {
graphics.setDrawingStyle(Graphics.DRAWSTYLE_FOCUS, true);
int oldColour = graphics.getColor();
try {
graphics.setColor(0x63003D);
graphics.fillRect(rect.x, rect.y, rect.width, rect.height);
isFocused = true;
} finally {
graphics.setColor(oldColour);
}
drawListRow(this, graphics, getSelectedIndex(), rect.y,
rect.width);
}
} finally {
graphics.setDrawingStyle(Graphics.DRAWSTYLE_FOCUS,
oldDrawStyleFocus);
}
}
public int moveFocus(int amount, int status, int time) {
this.invalidate(this.getSelectedIndex());
return super.moveFocus(amount, status, time);
}
public void onFocus(int direction) {
super.onFocus(direction);
}
protected void onUnFocus() {
this.invalidate(this.getSelectedIndex());
}
public void refresh() {
this.getManager().invalidate();
}
public void drawListRow(ListField listField, Graphics graphics, int index,
int y, int w) {
UpsellFlightListDTO upsellListDTO = (UpsellFlightListDTO) _listData
.elementAt(index);
graphics.setGlobalAlpha(255);
graphics.setFont(Font.getDefault().getFontFamily()
.getFont(Font.PLAIN, 12));
final int margin = 5;
String listHeading = "";//listRander.getListTitle();
String listDesc = "";//listRander.getListDesc();
graphics.setColor(Color.GRAY);
graphics.drawRect(0, y, w, _MAX_ROW_HEIGHT);
graphics.setColor(Color.BLACK);
// graphics.setFont(Font.getDefault());
if (isFocused) {
graphics.setColor(Color.WHITE);
isFocused = false;
} else {
graphics.setColor(Color.BLACK);
}
listHeading = upsellListDTO.getFlightNo()[0]+"\t"+upsellListDTO.getToFromCode()[0]
+"\t"+ upsellListDTO.getDepArrTime()[0] + "\t" + upsellListDTO.getStops()[0];
graphics.drawText(listHeading, 10, y
+ margin);
listDesc = "Flight Duration:- "+upsellListDTO.getFlightDuration()[0] + "\t \t Fare:- " + upsellListDTO.getFare();
graphics.drawText(listDesc, 10, y + margin + 12);
}
public Object get(ListField listField, int index) {
String rowString = (String) _listData.elementAt(index);
return rowString;
}
public int indexOfList(ListField listField, String prefix, int start) {
for (Enumeration e = _listData.elements(); e.hasMoreElements();) {
String rowString = (String) e.nextElement();
if (rowString.startsWith(prefix)) {
return _listData.indexOf(rowString);
}
}
return 0;
}
public int getPreferredWidth(ListField listField) {
return 3 * listField.getRowHeight();
}
/*
* protected boolean trackwheelClick (int status, int time) {
*
* invalidate(getSelectedIndex());
*
* Dialog.alert(" U have selected :" + getSelectedIndex());
*
* return super.trackwheelClick(status, time);
*
* }
*/
private ColoredLabelField getCustomedLabel(String text, int color, int size, int style, int align){
return null;
}
}