Blackberry ListField: how to add Listener for list row click - user-interface

Question

Suppose i had a Screen class that has 10 ListField:
Vector v_prj_title,v_prj_mgr
// v_prj_title contains name of projects
// v_prj_mgr contains name of the project_manager of v_prj_title sequentially.
//Vector send_vector
//ListField myList
//ListCallBack callback
//It is clear from the code that in myList, I m inserting a vector send_vector ie callback.insert(send_vector,i), which contains 2 strings collected one from v_prj_title and other from v_prj_mgr.
for(int i=0;i<10;i++)
{
myList.insert(i);
t1 = v_prj_title.elementAt(i).toString();
send_vector = new Vector(2);
send_vector.addElement(t1);
t2 = v_prj_mgr.elementAt(i).toString();
send_vector.addElement(t2);
callback.insert(send_vector,i);
}
Now I'm getting confused how to add eventListener to particular ListField, e.g. suppose if I click the 3rd ListField,(suppose this is the displayed data below) a bitmap picture should be displayed in the 3rd ListField and the name of the project (Project_Social_Meeting) and project_manager (Tom Clerk) should be inserted into database (SQlLite)
1. a. Project_Chat_Master( project name)
b. Vyom Ryan (project manager)
2. a. Project_Online_Gaming
b. Vivek Roy
3. a. Project_Social_Meeting
b. Tom Clerk
.
.
etc.....

Answer 1

create a CustomField/Manager depending on your requirement.(which may contain images/strings/...)
then add them to the callback method
Ex:
step:1
//creating a custom field
class MYListFieldItem extends Field
{
//#override
paint(graphics g)
{
g.drawbitmap(bitmap,0,0);
g.drawtext(string,bitmap.getwidth()+5<padding>,Math.min(bitmap.getHeight(),getFont().getHeight()));
//#override
layout(....)
{
setExtent(Math.min(width,bitmap.getwidth()+padding+getfont.getadvance(stringtext)),
Math.min(height,Math.min(bitmap.getHeight,getFont().getHeight())));
}
}
step-2:
//create list items
MYListFieldItem [] fields[] = new MYListFieldItem [<numOfListItems>];
for(int i=0;i<fields.size;i++)
{
_callback = new MyListFieldCallBack();
_callback.insert(fields[i],i);
}
step-3:
//set listeners
mylistFielditem[i].setchangeListener(new fieldchangeListener(){
fieldChanged(field)
{
//do your action here.
});
//TIP: if the fields are just strings,
//#override
navigationclick()
{
if(status == keypadlistener.status_fourway)
{
MYListFieldItem fld = (ListField)getLiefFieldwithFocus();
//do your coding
}
}