Checkbox in CustomListField in Blackberry - blackberry

Question

I am creating a CustomList. In each row I am having a image, some text fields and a checkbox. But i am not able to check and uncheck the checkbox.
I have gone through this link but cant solve my problem.
http://www.blackberry.com/knowledgecenterpublic/livelink.exe/fetch/2000/348583/800332/800505/800345/How_To_-_Create_a_ListField_with_check_boxes.html?nodeid=1165752&vernum=0
this will add a menu item in the menu to change the checkbox status.
I want the normal checkbox behaviour.
Please help
this is my code
class CustomList extends ListField implements ListFieldCallback
{
public Vector rows;
private Bitmap p1;
int z = this.getRowHeight();
LabelField task,task2,task3;
CheckboxField checkbox[]= new CheckboxField[40];
int rowcount;
public CustomList(int rowcount,String text1,double text2,String type,Bitmap p)
{
super(0, ListField.MULTI_SELECT);
this.rowcount= rowcount;
setRowHeight(z*3);
setEmptyString("Hooray, no tasks here!", DrawStyle.HCENTER);
setCallback(this);
p1 = p;
rows = new Vector();
for (int x = 0; x < rowcount; x++)
{
checkbox[x]=new CheckboxField("",false,Field.USE_ALL_HEIGHT|Field.EDITABLE|Field.FIELD_VCENTER|Field.FOCUSABLE);
}
for (int x = 0; x < rowcount; x++)
{
TableRowManager row = new TableRowManager();
row.add(checkbox[x]);
row.add(new BitmapField(p1));
task= new LabelField("abc");
row.add(task);
task2=new LabelField("abc2");
row.add(task2);
task3= new LabelField("abc3");
row.add(task3);
rows.addElement(row);
}
setSize(rows.size());
}
public void drawListRow(ListField listField, Graphics g, int index, int y,int width)
{
CustomList list = (CustomList) 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);
}
// Causes the fields within this row manager to be layed out then
// painted.
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.popContext();
}
protected void sublayout(int width, int height)
{
// set the size and position of each field.
}
public int getPreferredWidth()
{
return UIConstants.SCREEN_WIDTH;
}
public int getPreferredHeight()
{
return getRowHeight();
}
}
}
I am trying to implement listfield with checkboxes and i have seen its code in the knowledge base.
But i want that when i click on the checkbox it should be checked or unchecked onlyand when i click on the rest part of the row, i.e. anywhere except the checkbox then nothing should occur without checking the checkbox
How can i do that ?? Or i should do something else to do it.. Please suggest..

Answer 1

Do some thing like this where you are overriding your sublayOut method() in table row manager class
protected void sublayout(int width, int height)
{
Field field = getField(0);
layoutChild(field, Display.getWidth(), Display.getHeight());
setPositionChild(field, 10, 20);
Field field = getField(0);
layoutChild(field, Display.getWidth(), Display.getHeight());
setPositionChild(field, 10, 20);
//Set field
field = getField(1);
layoutChild(field, 120, fontHeight - 1 );
setPositionChild(field, 70, 05);
// set the list field
field = getField(2);
layoutChild(field, 150, fontHeight +10);
setPositionChild(field, 70, 25);
// set the field
field = getField(3);
layoutChild(field, (Display.getWidth()/6)-12, fontHeight + 10);
setPositionChild(field, 70, 45);
setExtent(preferredWidth, getPreferredHeight());
}
change the padding as your require ments.
And you can also check this link create a listField with check box. Thanks

Answer 2

boolean checked = false;
Vector box1 = new Vector();
for(int i=0;i<vector.size();i++){
FriendsRequestObject co_vec = (FriendsRequestObject)vector.elementAt(i);
String name=co_vec.getSender_name();
CheckboxField box = new CheckboxField(" "+name , checked, Field.USE_ALL_WIDTH){
public void paint(Graphics graphics) {
graphics.setColor(Color.WHITE);
super.paint(graphics);
}
};
box1.addElement(box);
box.setMargin(8, 0, 0, 5);
add(box);
}
then add a button. On the click listener of the button,
for(int d=0; d<box1.size(); d++){
CheckboxField box=(CheckboxField)box1.elementAt(d);
if(box.getChecked()==true){
FriendsRequestObject co_vec = (FriendsRequestObject)vector.elementAt(d);
String name_ = co_vec.getSender_name();
Dialog.alert(name_);// here you can implement your code
}
}