How to re-arrange the items of a ListField? I want to select the item on click on Blackberry (Storm and Torch) Touch Phones. After select I want to (Move and Drag) Scroll item Vertically on another list item(list items scroll vertically in background) or screen. After scrolling, drop item any where on (in list field) Screen.
i am also working on Custom list field. Just Click on listitem. after click U can move (selected) listItem vertically. if u want to place any where in screen than click again on trackpad. when u click it will be place on that position Checkout. here is my code.
public class ListDemo extends MainScreen implements ListFieldCallback {
private VerticalFieldManager vfm, vfm_List;
private ListField myList;
private Vector vector;
private String[] str_arr;
int Height = Display.getHeight();
int Width = Display.getWidth();
int i ;
boolean bool = true;
int index = 0;
private boolean hasFocus = false;
private boolean b = true;
public static int curSelected ;
Channel obj;
public ListDemo() {
vector = new Vector();
for (i = 0; i < 8; i++) {
obj = new Channel();
if (i == 0) {
obj.setCh_icon("ajtak.jpg");
obj.setCh_Name("NightSuite");
obj.setCh_Move("move.png");
} else if (i == 1) {
obj.setCh_icon("cnbc.jpg");
obj.setCh_Name("Shirts");
obj.setCh_Move("move.png");
} else if (i == 2) {
obj.setCh_icon("zee.jpg");
obj.setCh_Name("Jeans");
obj.setCh_Move("move.png");
} else if (i == 3) {
obj.setCh_icon("astha.jpg");
obj.setCh_Name("Bags");
obj.setCh_Move("move.png");
}else if (i == 4) {
obj.setCh_icon("fox_news.jpg");
obj.setCh_Name("Coat");
obj.setCh_Move("move.png");
}else if (i == 5) {
obj.setCh_icon("news.jpg");
obj.setCh_Name("Coat");
obj.setCh_Move("move.png");
} else if (i == 6) {
obj.setCh_icon("star_news.jpg");
obj.setCh_Name("Coat");
obj.setCh_Move("move.png");
} else {
obj.setCh_icon("assiant.jpg");
obj.setCh_Name("Shorts");
obj.setCh_Move("move.png");
}
vector.addElement(obj);
}
init();
}
public void init() {
vfm = new VerticalFieldManager(USE_ALL_HEIGHT | USE_ALL_WIDTH) {
protected void sublayout(int maxWidth, int maxHeight) {
super.sublayout(maxWidth, maxHeight);
setExtent(Width, Height);
}
};
vfm_List = new VerticalFieldManager(VERTICAL_SCROLL
| VERTICAL_SCROLLBAR) {
protected void sublayout(int maxHeight, int maxWidth) {
super.sublayout(maxWidth, maxHeight);
setExtent(Width, Height);
}
};
myList = new ListField()
{
public void onFocus(int direction){
hasFocus = true;
}
public void onUnfocus()
{
hasFocus = false;
super.onUnfocus();
invalidate();
}
public void paint(Graphics g) {
if (hasFocus)
{
curSelected = getSelectedIndex();
}
else
{
curSelected = -1;
}
super.paint(g);
}
};
myList.setCallback(this);
myList.setRowHeight(50);
myList.setFocusListener(new FocusChangeListener() {
public void focusChanged(Field field, int eventType) {
if (bool == false) {
index = myList.getSelectedIndex();
Channel temp = (Channel) vector
.elementAt(index);
vector.removeElementAt(index);
vector.insertElementAt(temp, curSelected);
myList.invalidate();
}
}
});
for (int i = 0; i < vector.size(); i++) {
myList.insert(i);
}
vfm_List.add(myList);
vfm.add(vfm_List);
add(vfm);
}
protected boolean navigationClick(int status, int time) {
if(bool)
{
bool = false;
}
else
{
bool = true;
}
return true;
}
public void drawListRow(ListField list, Graphics g, int index, int y, int w)
{
String text = ((Channel) vector.elementAt(index)).getCh_Name();
Bitmap arrow = Bitmap.getBitmapResource(((Channel) vector.elementAt(index)).getCh_icon());
if(bool == false)
{
if (g.isDrawingStyleSet(Graphics.DRAWSTYLE_FOCUS))
{
Bitmap move = Bitmap.getBitmapResource(((Channel) vector.elementAt(index)).getCh_Move());
g.drawBitmap(Width - 40, y + 13, 25, 25, move, 0, 0);
}
}
g.setBackgroundColor(Color.LIGHTBLUE);
g.setColor(Color.BLACK);
g.drawBitmap(0, y + 10, 48, 35, arrow, 0, 0);
g.drawText(text, 50, y + 18, 0, w);
g.setColor(Color.WHITE);
invalidate();
}
public Object get(ListField list, int index) {
return vector.elementAt(index);
}
public int indexOfList(ListField list, String p, int s) {
return vector.indexOf(p, s);
}
public int getPreferredWidth(ListField list) {
return Graphics.getScreenWidth();
}
public void insert(String toInsert, int index) {
vector.addElement(toInsert);
}
public void erase() {
vector.removeAllElements();
}
}
Here is another Channel Class
public class Channel {
private String ch_Name;
private String ch_icon;
private String ch_move;
public String getCh_Name() {
return ch_Name;
}
public void setCh_Name(String ch_Name) {
this.ch_Name = ch_Name;
}
public String getCh_icon() {
return ch_icon;
}
public void setCh_icon(String ch_icon) {
this.ch_icon = ch_icon;
}
public String getCh_Move() {
return ch_move;
}
public void setCh_Move(String ch_move) {
this.ch_move = ch_move;
}
}
Checkout its working on both touch and nontouch .