こんにちは友人の私の BlackBerry アプリケーションでは、リスト フィールドを使用し、このリスト フィールドにドロップ ダウンを追加します。今私の問題は、リストフィールドに追加したドロップダウンをどのように選択するかです.今、ドロップダウンではなくリストフィールドのみを選択しますが、最初にドロップダウンを選択してからリストフィールドを選択する必要があります. ここにコードを含めましたので、確認してください。
public class TaskListField extends ListField implements ListFieldCallback, KeypadListener {
private Vector rows;
private Bitmap p1;
private Bitmap p2;
public LoginPage objLoginPage;
public String[] data={"Call","Visit"};
public String strIndex = null;
public int tempIndex = 0;
public int intvalue;
public int id;
public int value;
public boolean hasFocus = false;
public static String[] arrOutletName = { "Dosa Store", "Benfish Bhawan",
"Nalban Park", "Korunamoyee", "206 Bus Stop", "aaaaaaaa",
"bbbbbbbb", "ccccccccc", "dddddddd", "eeeeeee" };
public ObjectChoiceField ocf;
public TaskListField() {
super(0, ListField.MULTI_SELECT);
setRowHeight(80);
setEmptyString("Hooray, no tasks here!", DrawStyle.HCENTER);
setCallback(this);
p1 = Bitmap.getBitmapResource("name.png");
p2 = Bitmap.getBitmapResource("name.png");
rows = new Vector();
for (int x = 0; x < XmlHander.vectSrno.size(); x++) {
TableRowManager row = new TableRowManager();
strIndex = String.valueOf(x);
String strVectno = XmlHander.vectSrno.elementAt(x).toString();
String strSLADate = XmlHander.vectSldate.elementAt(x).toString();
if (x % 2 == 0) {
row.add(new BitmapField(null));
}
else {
row.add(new BitmapField(null));
}
LabelField task = new LabelField(" ");
if (x % 15 == 0) {
task.setFont(Font.getDefault().derive(Font.BOLD | Font.UNDERLINED));
} else {
task.setFont(Font.getDefault().derive(Font.BOLD));
}
row.add(task);
row.add(new LabelField(strVectno, DrawStyle.ELLIPSIS) {
protected void paint(Graphics graphics) {
graphics.setColor(0x00878787);
// graphics.setColor(Color.PINK);
super.paint(graphics);
}
});
row.add(ocf=new ObjectChoiceField("",data){
protected void paint(Graphics graphics){
graphics.setColor(0x00878787);
super.paint(graphics);
}
});
ocf.setChangeListener(new FieldChangeListener(){
public void fieldChanged(Field field, int context) {
if(context != PROGRAMMATIC)
Dialog.alert(data[ocf.getSelectedIndex()]);
}
});
rows.addElement(row);
}
setSize(rows.size());
}
public void drawListRow(ListField listField, Graphics g, int index, int y, int width) {
TaskListField list = (TaskListField) listField;
TableRowManager rowManager = (TableRowManager) list.rows.elementAt(index);
rowManager.drawRow(g, 0, y, width, list.getRowHeight());
}
private class TableRowManager extends Manager {
public TableRowManager() {
super(0);
}
public void drawRow(Graphics g, int x, int y, int width, int height) {
layout(width, height);
setPosition(x, y);
g.pushRegion(getExtent());
subpaint(g);
g.setColor(0x00CACACA);
g.drawLine(0, 0, getPreferredWidth(), 0);
g.popContext();
}
protected void sublayout(int width, int height) {
int fontHeight = Font.getDefault().getHeight();
int preferredWidth = getPreferredWidth();
Field field = getField(0);
layoutChild(field, 32, 32);
setPositionChild(field, 0, 0);
field = getField(1);
layoutChild(field, preferredWidth - 16, fontHeight + 1);
setPositionChild(field, 34, 3);
field = getField(2);
layoutChild(field, 150, fontHeight + 1);
setPositionChild(field, 34, fontHeight + 6);
field = getField(3);
layoutChild(field, 150, fontHeight + 1);
setPositionChild(field, preferredWidth - 152, fontHeight + 6);
setExtent(preferredWidth, getPreferredHeight());
}
public int getPreferredWidth() {
return Graphics.getScreenWidth();
}
public int getPreferredHeight() {
return getRowHeight();
}
}
public Object get(ListField listField, int index) {
return null;
}
public int getPreferredWidth(ListField listField) {
return 0;
}
public int indexOfList(ListField listField, String prefix, int start) {
return 0;
}
protected boolean navigationClick(int status, int time) {
final int index;
index = this.getFieldWithFocusIndex() - 1;
UiApplication.getUiApplication().invokeLater(new Runnable() {
public void run() {
UiApplication.getUiApplication().pushScreen(new Details(id));
}
});
return false;
}
public int moveFocus(int amount, int status, int time) {
invalidate(getSelectedIndex());
id = this.getSelectedIndex();
invalidate();
return super.moveFocus(amount, status, time);
}
public void onFocus(int direction) {
hasFocus = true;
super.onFocus(direction);
System.out.println("direction==" + direction);
invalidate();
}
public void onUnfocus() {
updateLayout();
super.onUnfocus();
invalidate();
}
private int getFieldWithFocusIndex() {
return 0;
}
}