Hi,
I encounter the problem of not being able to read the information from the contact list.
It is ok to read organization name and email. But I can not read the name information.
I get the exception message of
java.lang.IndexOutOfBoundsException: Empty field: 106>, Exception caught in Display class
What is the problem? At first, I read the org information and show that information in the list. When the user chooses one organization name from the list, it will show the name associated with that organization.
I think there is error not only in the part of reading name information, but also in part of showing that data because it shows the following exception message when I just try to display the email information .
TRACE: <at java.lang.NullPointerException: 0>, Exception caught in Display class
java.lang.NullPointerException: 0
//ZSecondContactMIDlet .java
package zthirdcontact;
import java.util.Enumeration;
import javax.microedition.lcdui.*;
import javax.microedition.midlet.MIDlet;
import javax.microedition.midlet.MIDletStateChangeException;
import javax.microedition.pim.*;
public class ZSecondContactMIDlet extends MIDlet implements CommandListener{
static ZSecondContactMIDlet zsecondcontactmidlet;
Form mainForm;
StringItem stItem;
Display display;
Command cmdExit;
Command cmdRead;
Command cmdDelete;
Command cmdWrite;
public ZSecondContactMIDlet() {
mainForm=new Form("Contact Program");
stItem=new StringItem("*******","Data has been entered");
cmdExit=new Command("Exit",Command.EXIT,0);
cmdRead=new Command("Read",Command.SCREEN,0);
cmdDelete=new Command("Delete",Command.SCREEN,0);
cmdWrite=new Command("Write",Command.SCREEN,0);
mainForm.append(stItem);
mainForm.addCommand(cmdRead);
mainForm.addCommand(cmdExit);
mainForm.addCommand(cmdDelete);
mainForm.addCommand(cmdWrite);
mainForm.setCommandListener(this);
display=Display.getDisplay(this);
Verify();
}
private void Verify() {
String version=System.getProperty("microedition.pim.version");
if(version==null)
{
System.out.println("PIM is not available");
}
}
protected void destroyApp(boolean arg0) throws MIDletStateChangeException {
// TODO Auto-generated method stub
}
protected void pauseApp() {
// TODO Auto-generated method stub
}
protected void startApp() throws MIDletStateChangeException {
display.setCurrent(mainForm);
}
public void commandAction(Command c, Displayable d) {
if(c==cmdExit)
{
try {
destroyApp(true);
notifyDestroyed();
} catch (MIDletStateChangeException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
if(c==cmdWrite)
{
PIM pim=PIM.getInstance();
ContactList contactlist=null;
Contact contact=null;
try {
contactlist=(ContactList)pim.openPIMList(PIM.CONTACT_LIST,PIM.WRITE_ONLY);
contact=contactlist.createContact();
String[]name_struct=new String[contactlist.stringArraySize(Contact.NAME)];
name_struct[Contact.NAME_GIVEN]="Rose";
name_struct[Contact.NAME_FAMILY]="Angel";
contact.addString(Contact.ORG, PIMItem.ATTR_NONE, "Microsoft");
contact.addString(Contact.TEL, PIMItem.ATTR_NONE, "099045464");
contact.addString(Contact.EMAIL, PIMItem.ATTR_NONE, "rose@gmail.com");
contact.commit();
} catch (PIMException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
if(contactlist!=null)
{
try {
contactlist.close();
contactlist=null;
} catch (PIMException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}//if(c==cmdWrite)
if(c==cmdRead)
{
List listName;
PIM pim=PIM.getInstance();
ContactList contactlist=null;
Enumeration contacts=null;
listName=new List("Name List",List.IMPLICIT);
listName.setCommandListener(new ListCommandHandler());
try {
contactlist=(ContactList)pim.openPIMList(PIM.CONTACT_LIST, PIM.READ_ONLY);
Contact temp_contact=null;
temp_contact=contactlist.createContact();
temp_contact.addString(Contact.ORG, PIMItem.ATTR_NONE, "M");
contacts=contactlist.items(temp_contact);
if(contacts==null)
{
System.out.println("There is no PIM record");
return;
}
while(contacts.hasMoreElements())
{
Contact contact=(Contact)contacts.nextElement();
String Orgname=contact.getString(Contact.ORG, 0);
listName.append(Orgname, null);
}
} catch (PIMException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
if(contactlist!=null)
{
try {
contactlist.close();
contactlist=null;
} catch (PIMException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
display=Display.getDisplay(this);
display.setCurrent(listName);
}//if(c==cmdRead)
if(c==cmdDelete)
{
PIM pim=PIM.getInstance();
try {
ContactList contactlist=(ContactList)pim.openPIMList(PIM.CONTACT_LIST, PIM.READ_WRITE);
Enumeration contact_temp=contactlist.items();
if(contact_temp==null)
{
System.out.println("there is no record to delete");
return;
}
while(contact_temp.hasMoreElements())
{
contactlist.removeContact((Contact)contact_temp.nextElement());
}//while
} catch (PIMException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}//if(c==cmdDelete)
}
}//ListCommandHandler.java
package zthirdcontact;
//import java.nio.ShortBuffer;
import java.util.Enumeration;
import javax.microedition.lcdui.Alert;
import javax.microedition.lcdui.AlertType;
import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.List;
import javax.microedition.pim.Contact;
import javax.microedition.pim.ContactList;
import javax.microedition.pim.PIM;
import javax.microedition.pim.PIMException;
public class ListCommandHandler implements CommandListener {
public ListCommandHandler() {
// TODO Auto-generated constructor stub
}
public void commandAction(Command c, Displayable d) {
List listName=(List)d;
if(c==List.SELECT_COMMAND)
{
try {
StringBuffer buffer=new StringBuffer();
int index=listName.getSelectedIndex();
PIM pim=PIM.getInstance();
ContactList contactlist=(ContactList)pim.openPIMList(PIM.CONTACT_LIST, PIM.READ_WRITE);
Enumeration contact_temp=null;
contact_temp=contactlist.items(listName.getString(index));
while(contact_temp.hasMoreElements())
{
Contact contact=(Contact) contact_temp.nextElement();
String[] name_struct=contact.getStringArray(Contact.NAME, 0);
String firstname=name_struct[Contact.NAME_GIVEN];
String lastname=name_struct[Contact.NAME_FAMILY];
buffer.append("First Name:");
buffer.append(firstname);
buffer.append("\n");
buffer.append("Last Name");
buffer.append(lastname);
buffer.append("\n");
String email=contact.getString(Contact.EMAIL,0);
buffer.append(email);
}//while
System.out.println(buffer.toString());
Alert alertdetail=new Alert("",buffer.toString(),null,AlertType.INFO);
Display display=Display.getDisplay(ZSecondContactMIDlet.zsecondcontactmidlet);
display.setCurrent(alertdetail);
} catch (PIMException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}//if(c==listName.SELECT_COMMAND)
}
}