showcontactinfosreen.java

电话本信息管理,能读取电话本信息,很好用的啊哈哈哈....

import java.io.ByteArrayOutputStream;
import java.util.*;
import javax.microedition.lcdui.*;
import javax.microedition.pim.*;

import com.sun.perseus.model.Set;
 

public class showContactInfoSreen extends Form implements CommandListener, ItemCommandListener {


	private final Command editArrayCommand=new Command("修改",Command.OK,1);
	private final Command editBooleanCommand=new Command("修改",Command.OK,1);
	private final Command commitCommand=new Command("提交",Command.OK,2);
	private final Command backCommand=new Command("后退",Command.BACK,1);
	private final Command showVCard=new Command("显示vCard",Command.SCREEN,5);
	private final Command showVCalender=new Command("显示vCalender",Command.SCREEN,5);
	private final Command addField=new Command("添加项目",Command.SCREEN,2);
	private final Command removeField=new Command("删除项目",Command.SCREEN,3);
	private final Command addCatCommand=new Command("添加到分组",Command.SCREEN,3);
	private final Command removeCatCommand=new Command("从分组中删除",Command.SCREEN,3);
	private final ContactListDemo midlet;
	private final showPersonList caller;
	private final PIMList list;
	private final PIMItem item;
	private final Hashtable fieldTable=new Hashtable();/////////////
	
	
	public showContactInfoSreen(ContactListDemo midlet,showPersonList caller,PIMList list,PIMItem item) {
		super("联系人信息");
		this.midlet=midlet;
		this.caller=caller;
		this.item=item;
		this.list=list;
		addCommand(backCommand);
		addCommand(commitCommand);
		setCommandListener(this);
 
	}
	private boolean isClassField(int field)
	{
		return item instanceof Contact&&field==Contact.CLASS||
		        item instanceof Event&&field==Event.CLASS||
		        item instanceof ToDo&&field==ToDo.CLASS;		
	}
	private void populateForm() throws PIMException
	{
		deleteAll();
		fieldTable.clear();
		int []fields=item.getPIMList().getSupportedFields();
		boolean allFieldsUsed=true;
		for(int i=0;i<fields.length;i++)
		{
			int field=fields[i];
			if(isClassField(field)){//排除CLASS字段
				continue;				
			}
			if(item.countValues(field)==0){//判断字段是否在电话本中
				allFieldsUsed=false;
				continue;
			}
			
			int dataType=item.getPIMList().getFieldDataType(field);
			String label=item.getPIMList().getFieldLabel(field);
			Item formItem=null;
			switch (dataType) {
			case PIMItem.STRING:{
				  String sValue=item.getString(field, 0);
				  if(sValue==null){
					  sValue="";
				  }
				  int style=TextField.ANY;
				  switch (field) {
					case Contact.EMAIL:
						style=TextField.EMAILADDR;
						break;
					case Contact.TEL:
						style=TextField.PHONENUMBER;
						break;
					case Contact.URL:
						style=TextField.URL;
						break;
				 }				  
				  try {
					formItem=new TextField(label,sValue,128,style);
				} catch (Exception e) {
					formItem=new TextField(label,sValue,128,TextField.ANY);
				}
				break;
			}
			case PIMItem.BOOLEAN:
				formItem=new StringItem(label,item.getBoolean(field, 0)?"yes":"no");
				formItem.setDefaultCommand(editBooleanCommand);
				break;
			case PIMItem.STRING_ARRAY:
				String a[]=item.getStringArray(field, 0);
				if(a!=null){
					formItem=new  StringItem(label,joinStringArray(a));/////
					formItem.setDefaultCommand(editArrayCommand);
				}
				break;
			case PIMItem.DATE:
				long  time=item.getDate(field, 0);
				int style= DateField.DATE_TIME;
				switch (field) {  /////
				case Contact.BIRTHDAY:
					style=DateField.DATE;
					break;
				}
				
				formItem=new DateField(label,style);
				((DateField)formItem).setDate(new Date(time));
				break;
			case PIMItem.INT:
				formItem=new TextField(label,String.valueOf(item.getInt(field, 0)),64,TextField.DECIMAL);
				break;
			case PIMItem.BINARY:
				byte []data=item.getBinary(field, 0);
				if(data!=null){
					formItem=new StringItem(label,data.length+"byte");
				}
				break;
			}
			
			if(formItem!=null){
				append(formItem);
				fieldTable.put(formItem, new Integer(field));
				formItem.addCommand(removeField);
				formItem.setItemCommandListener(this);
			}
		}
		//添加VCard的命令提示
		addCommand(showVCard);
		if(!allFieldsUsed){
			addCommand(addField);			
		}else {
			removeCommand(addField);
		}
		//分组信息
		String cats[]=item.getCategories();
		if(cats.length>0){
			addCommand(removeCatCommand);
			StringItem si=new StringItem("分组名称",joinStringArray(cats));
			this.insert(0, si);
		}else{
			addCommand(addCatCommand);
		}
		
	}
    private String joinStringArray(String a[]){
    	StringBuffer sb=new StringBuffer();
    	for(int i=0;i<a.length;i++){
    		if(a[i]!=null&&a[i].length()>0){
    			if(sb.length()>0){
    				sb.append(",");
    			}
    			sb.append(a[i]);
    		}
    	}
    	return sb.toString();
    }
	public void commandAction(Command c, Displayable d) {
		 if(c==backCommand){
			 try {
				getUserData();
			} catch (Exception e) {
			}
			try {
				caller.populateList();
			} catch (Exception e) {
			}
			Display.getDisplay(midlet).setCurrent(caller);
		 }
		 else if(c==commitCommand){
			 commit();
		 }
		 else if(c==showVCard){
			 showItem("VCARD/2.1");
		 }
		 else if(c==showVCalender){
			 showItem("VCALENDAR/1.0");
		 }
		 else if(c==addField){
			 addField();
		 }
		 else if(c==addCatCommand){
			 Display.getDisplay(midlet).setCurrent(new SetCatagoryList(midlet,this,list,item));
		 }
	}

	private void addField() {
		 int allFields[]=item.getPIMList().getSupportedFields();
		 final Vector unusedField=new Vector();
		 for(int i =0;i<allFields.length;i++){
			 if(item.countValues(allFields[i])==0&&!isClassField(allFields[i])){
				 unusedField.addElement(new Integer(allFields[i]));
			 }
		 }
		 
		 final List fieldList=new List("选择要添加的项目",List.IMPLICIT);
		 for(Enumeration e=unusedField.elements();e.hasMoreElements();){
			 int field=((Integer)e.nextElement()).intValue();
			 fieldList.append(item.getPIMList().getFieldLabel(field), null);
		 }
		 fieldList.addCommand(new Command("取消",Command.CANCEL,1));
		 fieldList.setSelectCommand(new Command("添加",Command.OK,1));
		 fieldList.setCommandListener(new CommandListener(){
			public void commandAction(Command c, Displayable d) {
			 if(c.getCommandType()==Command.OK){
				 try {
					int index=fieldList.getSelectedIndex();
					int field=((Integer)unusedField.elementAt(index)).intValue();
					addField(field);
				} catch (Exception e) {}
				try {
					getUserData();
					populateForm();
				} catch (Exception e) {}
			 }
				Display.getDisplay(midlet).setCurrent(showContactInfoSreen.this);
			}			 
		 });
		 Display.getDisplay(midlet).setCurrent(fieldList);
	}
	
	private void addField(int field) {
		 switch (item.getPIMList().getFieldDataType(field)) {
			case PIMItem.STRING:
				 item.addString(field, PIMItem.ATTR_NONE, "");
				break;
			case PIMItem.STRING_ARRAY:{
				 int supportedElements[]=item.getPIMList().getSupportedArrayElements(field);	
				 int arraySize=0;
				 for(int i=0;i<supportedElements.length;i++){
					 arraySize=Math.max(arraySize, supportedElements[i]+1);
				 }
				 String a[]=new String[arraySize];
				 for(int i=0;i<a.length;i++){
					 a[i]="";
				 }
				 item.addStringArray(field, PIMItem.ATTR_NONE, a);
				break;
			  }
			case PIMItem.BINARY:
				 item.addBinary(field, PIMItem.ATTR_NONE, new byte[16], 0, 16);
				break;
			case PIMItem.BOOLEAN:
				item.addBoolean(field, PIMItem.ATTR_NONE, false);
				break;
			case PIMItem.DATE:
				item.addDate(field, PIMItem.ATTR_NONE, new Date().getTime());
				break;
			case PIMItem.INT:
				item.addInt(field, PIMItem.ATTR_NONE, 0);
				break;
		}
		
	}
	private void showItem(String format) {
		 try {
			getUserData();
			populateForm();
			ByteArrayOutputStream baos=new ByteArrayOutputStream();
			PIM.getInstance().toSerialFormat(item, baos, "UTF-8", format);//////
			String s=new String(baos.toByteArray(),"UTF-8");
			Alert a=new Alert(format,s,null,AlertType.INFO);
			a.setTimeout(Alert.FOREVER);
			Display.getDisplay(midlet).setCurrent(a,this);
		} catch (Exception e) {
			 e.printStackTrace();
		}
		
	}
	private void commit() {
	 try {
		  getUserData();
		  item.commit();
		  populateForm();
	} catch (Exception e) {
	}
	}
	private void getUserData() throws NumberFormatException{
		 int itemCount=size();
		 for(int i=0;i<itemCount;i++){
			 Item formItem=get(i);
			 int field=((Integer)fieldTable.get(formItem)).intValue();
			 if(item.countValues(field)<1){
				 continue;
			 }
			 
			 int dataType=item.getPIMList().getFieldDataType(field);
			 switch (dataType) {
				case PIMItem.STRING:{
					String s=((TextField)formItem).getString();
					try {
						item.setString(field, 0, PIMItem.ATTR_NONE, s);
					} catch (Exception e) {
					 
					}
					break;
				}
				case PIMItem.DATE:{
					long time=((DateField)formItem).getDate().getTime();
					try {
						item.setDate(field, 0, PIMItem.ATTR_NONE, time);
					} catch (Exception e) {
					 
					}
					break;
				}
				case PIMItem.INT:{
					String s=((TextField)formItem).getString();
					int j=Integer.parseInt(s);
				 
					 item.setInt (field, 0, PIMItem.ATTR_NONE, j);
				 
					break;
				}
			}
		 }
		
	}
	public void commandAction(Command c, final Item formItem) {
		  final int field=((Integer)fieldTable.get(formItem)).intValue();
		  if(c==editBooleanCommand){
			  boolean newValue=!item.getBoolean(field, 0);
			  item.setBoolean(field, 0, PIMItem.ATTR_NONE, newValue);
			  ((StringItem)formItem).setText(newValue?"yes":"no");
		  }
		  else if(c==editArrayCommand){
			  String label=item.getPIMList().getFieldLabel(field);
			  final  String a[]=item.getStringArray(field, 0);
			  final TextField textFields[]=new TextField[a.length];
			  for(int i=0;i<a.length;i++){
				  String elementLabel=item.getPIMList().getArrayElementLabel(field, i);
				  textFields[i]=new TextField(elementLabel,a[i],128,TextField.ANY); 
			  }
			  Form form=new Form(label,textFields);
			  final Command okcommand=new Command("OK",Command.OK,1);/////为什么要final?             
			  final Command cancelcommand=new Command("取消",Command.CANCEL,1);
			  form.addCommand(okcommand);
			  form.addCommand(cancelcommand);
			  form.setCommandListener(new CommandListener(){
				public void commandAction(Command c, Displayable d) {
					if(c==okcommand){
						for(int i=0;i<textFields.length;i++){
							a[i]=textFields[i].getString();
						}
						item.setStringArray(field, 0,  item.getAttributes(field, 0),  a);
						((StringItem)formItem).setText(joinStringArray(a));
					}
					Display.getDisplay(midlet).setCurrent(showContactInfoSreen.this);
				}	 
			  } );
			   Display.getDisplay(midlet).setCurrent(form);
		  }
		  else if(c==removeField){
			  try {
				item.removeValue(field, 0);
			} catch (Exception e) {
			}
			try {
				populateForm();
			} catch (Exception e) {
			}
		  }
	  }
}