Categories: Java | Java ME | PIM | How To | Code Examples

This page was last modified 12:31, 13 December 2007.

From Forum Nokia Wiki

Following code snippets show how to add contacts using JSR 75.

/**
 * PIMWrite Class
 *  This sample demo generates the random names and numbers and it will add to the phonebooks.
 *  This code will be useful, if we want to add more contacts to our phonebooks for testing.
 *  if we need to see the performance, of PhoneBooks contacts writing and reading speed 
 *  This code will be useful
 * @author Senthil
 * 
 */
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import java.util.*;
 
public class PIMWrite extends MIDlet implements CommandListener
{
  private Command PIMWriteCmd,exitCommand,generateName;
  PIMImpl pimImpl;
  private static Random random = new Random();
  static String[] names;
 
  public static Display display;
  public static Form result;
  private String sp,si,s1;
  private String[] strJSR = new String[12]; 
  private long l;
  int noOfContacts;
 
  TextField textfield = new TextField("Enter No of Contacts: ","",3,TextField.NUMERIC);
  
 
/*Constructs an Object
*/
  public PIMWrite() {
  
	 display = Display.getDisplay(this);
 
	 PIMWriteCmd = new Command("PIMWrite", Command.SCREEN, 0);
 
 
	 exitCommand = new Command("Exit", Command.SCREEN, 0);
     	 
	 result=new Form("Write Contacts To PIM");
     result.append(textfield);  
	 System.out.println(" noOfContacts: "+noOfContacts);
 
	 result.addCommand(PIMWriteCmd);
	 result.addCommand(exitCommand);
	 result.setCommandListener(this); 
      
 }
 
  public void startApp() throws MIDletStateChangeException {
    display.setCurrent(result);
 
  }
 
  public void pauseApp() {
  }
 
  public void destroyApp(boolean unconditional) {
  }
 
  public void commandAction(Command c, Displayable s)
  {
    if (c == exitCommand)
	{
      destroyApp(false);                          
      notifyDestroyed();                                        
    }
 
	else if(c == PIMWriteCmd)
	{
		noOfContacts = Integer.parseInt(textfield.getString());
		createConatactName();
		 System.out.println(" noOfContacts: "+noOfContacts);
		//Start the PIM thread and write contacts .
			pimImpl = new PIMImpl();
			pimImpl.start();
 
 
    }
  }
 
	public void createConatactName()
	{
		names = new String[noOfContacts];
		for (int i = 0; i < noOfContacts; i++){
			names[i] = PIMWrite.generateName()+" "+PIMWrite.generateName();
		System.out.println(" Names :"+ names[i]+ " i "+i);
		}
	}
 
 
  public static String generateName()
	{
		return generateName(4, 7, true);
	}
 
 
	/** This method generates the random names 
	 * 
	 * @param minLength  Minimum length of name
	 * @param maxLength Max length of name
	 * @param capitalize Captilize
	 * @return name
	 */
  public static String generateName(int minLength, int maxLength, boolean capitalize)
	{
 
		int limit = (random.nextInt(maxLength - minLength + 1)) + minLength;
		StringBuffer s = new StringBuffer(limit);
		for (int i = 0; i < limit; i++)
		{
			char c = (char)((random.nextInt(26)) + 'a');		
			s.append(c);
		}
		if (capitalize && (s.length() > 0)) s.setCharAt(0, Character.toUpperCase(s.charAt(0)));
		return s.toString();
	}
}

PIM Implementation class

/**
* PIM Implementation class
*/
import javax.microedition.pim.*;
import java.util.*;
import javax.microedition.lcdui.*;
import javax.microedition.lcdui.Command;
 
public class PIMImpl extends Thread
{
static Alert check;
 
StringItem si;
//----------------------------------------Phone Book---------------------------------
 
	int noOfRecords;
	public static boolean pimTemp = false;
	Random randPh = new Random();
 
 
	public PIMImpl()
	{
 
	}
 
    public void run()
    {
		writeData();
    }
 
 
 
public synchronized void writeData()
{
 
String ph[] = new String[PIMWrite.names.length];
      for (int i=0;i<PIMWrite.names.length ;i++ )
      {			
 
			String r = Long.toString(randPh.nextLong());
			if(r.startsWith("-"))
			{ 
				r = r.replace('-','9');
			}
			ph[i] =(r.length()>10)?(r.substring(0,10)):(r);
 
 
      
//	  System.out.println(" PH :"+ph[i] +"i:"+i);
	  }
 
 
	int tc = 0;
	PIM pim; 
    try{
 
	ContactList contacts = null;
	ContactList conT = null;
	pim = PIM.getInstance();
	 try {
 
		contacts = (ContactList) pim.openPIMList(PIM.CONTACT_LIST, PIM.READ_WRITE);
	 } catch (PIMException e) {
		// An error occurred
		return;
	 }
    for(int i=0;i<PIMWrite.names.length;i++)
	{
 
	 Contact contact = contacts.createContact();
	 String[] name = new String[contacts.stringArraySize(Contact.NAME)];
	  
//	  System.out.println("i = "+i);
	 if (contacts.isSupportedField(Contact.TEL))
	 {
		 contact.addString(Contact.TEL, Contact.ATTR_MOBILE, ph[i]);
	 }
 
	 if (contacts.isSupportedArrayElement(Contact.NAME, Contact.NAME_GIVEN))
		  name[Contact.NAME_GIVEN] = PIMWrite.names[i];
	 contact.addStringArray(Contact.NAME, PIMItem.ATTR_NONE, name);
 
	 
	 try {
		  contact.commit();
	 } catch (PIMException e) {
		  // An error occured
	 }
		PIMWrite.result.deleteAll();	
		String msg=" Contacts Adding :"+i;
		si = new StringItem("",msg);
		PIMWrite.result.append(si);	
 
	}
	  	check = new Alert("Added","Added ",null,AlertType.CONFIRMATION);
		check.setTimeout(Alert.FOREVER);
		PIMWrite.display.setCurrent(check);	 
 
	 try {
		  contacts.close();
	 } catch (PIMException e) {
	 }
 
	}catch(Exception e){
		String er = e+" ; tc="+tc;
	check = new Alert( "Response",er,null,AlertType.CONFIRMATION );
	check.setTimeout(Alert.FOREVER);
 
	PIMWrite.display.setCurrent(check);	
	}
//	return true;
 
}
 
}