meetnotice.java

在手机上 可以 存取数据 删除 数据 一个简单的手机应用

/*
 * MeetNotice.java
 *
 */


import javax.microedition.lcdui.*;
import javax.microedition.rms.RecordEnumeration;
import javax.microedition.rms.RecordFilter;
import javax.microedition.rms.RecordStore;
public class MeetNotice extends  Form implements CommandListener {
    private DataSave dataSave;
    private Container container;
    private Jianhuaban midlet;
    private Displayable displayable;
    private Display display;
    private StringItem si;
    
    private MyCommand myc;
    
    private Command backCommand;
   
    private String meetNoticeID;
    private String meetNoticeContent;
    private RecordEnumeration re = null;
    private RecordStore rs = null;
    private String adid=null;
   // private  int i=2;
    //好像是上边的构造函数 11-28日
    public MeetNotice(Jianhuaban midlet,Displayable displayable,Container container,DataSave dataSave) {
        super("aaa");
        myc=new MyCommand();
        this.midlet=midlet;
        this.displayable=displayable;
        si=new StringItem("会议公告","");
        append(si);
       
        backCommand=new Command("back",Command.BACK,1);
        this.addCommand(backCommand);
        this.addCommand(myc.getUpCommand());
        this.addCommand(myc.getDownCommand());
        this.addCommand(myc.getDisplay());
        setCommandListener(this);
        this.display=Display.getDisplay(midlet);
       
         this.container=container;
        this.dataSave=dataSave;
       
     
    }
  
    public void commandAction(Command c ,Displayable d){
       
      
       dataSave.openTheStore("meetNotice");
         String  sb=new String();
      int i=dataSave.getCurrentID();  
        if(backCommand==c){
            
            display.setCurrent(displayable);
        }
        
        if(c==myc.getDisplay()){
        //要加上 调试时屏蔽的
            //
    sb=dataSave.getTheStore(dataSave,"meetNotice",i,container); 
      
          si.setText(sb);
        }
        if(c==myc.getDownCommand()){
          
            i++;
           sb=dataSave.getTheStore(dataSave,"meetNotice",i,container);
           
            si.setText(sb);
        }if(c==myc.getUpCommand()){
            
            i--;
          sb=dataSave.getTheStore(dataSave,"meetNotice",i,container);
           
            si.setText(sb);
        }
   
        
    }
    //感觉这个方法是没有必要的 11月27日注
    /*
    private  void readMeetNotice(){
        // 下边的程序是FindRecord.java类的一段程序
        //获取广告的ID，tf的作用
        RecordFilter rf = new FindFilter(meetNoticeID);
        RecordEnumeration re = null;
        try {
            re = rs.enumerateRecords(rf, null, false);
        } catch (Exception e) {
        }
        //查找成功
        if (re.numRecords() > 0) {
         
            Container container=null;
            int recordID;
            try {
                byte[] rec;
                recordID = re.nextRecordId();
                rec = rs.getRecord(recordID);
                
                container=Container.deserializeMeetNotice(rec);
                
                StringItem adContain=new StringItem("广告内容",container.getMeetNoticeContent());
                
                
                adContain.setLayout(Item.LAYOUT_NEWLINE_AFTER);
                
                
                append(adContain);
                
                container = null;
                re.destroy();
                
            } catch (Exception e) {
                container = null;
                
            }
        }
    }
     */
}