viewdata.java

自行开发的j2me小软件

 /*
 * 创建日期 2005-1-28
 *
 * TODO 要更改此生成的文件的模板，请转至
 * 窗口 － 首选项 － Java － 代码样式 － 代码模板
 */
package src;

import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.Form;

import javax.microedition.rms.RecordEnumeration;
import javax.microedition.rms.RecordStore;

/**
 * @author ryu-java
 *
 * TODO 要更改此生成的类型注释的模板，请转至
 * 窗口 － 首选项 － Java － 代码样式 － 代码模板
 */
public class ViewData extends myScreen{
	
	Form ViewDataF=new Form("*收入单查看*");
	Command Back =new Command("返回",Command.SCREEN,2);
	Command NextPage =new Command("下一页",Command.SCREEN,1);
	//Command PreviousPage =new Command("上一页",Command.SCREEN,1);
	 String tpsum="";
	String DBname;
	RecordEnumeration re;
	RecordStore DataS;
	MoneyData vd;
	
	public ViewData(int tag)
	{
		switch(tag)
		{
		 case myScreen.INCOMETAG:
		 DBname=myScreen.INCOME;
		 ViewDataF.setTitle("*收入单查看*");
		 break;
		 
		 case myScreen.OUTGOTAG:
			 DBname=myScreen.OUTGO;
			 ViewDataF.setTitle("*支出单查看*");
			 break;
		 
		 case myScreen.BORROWTAG:
			 DBname=myScreen.BORROW;
			 ViewDataF.setTitle("*借出单查看*");
			 break;
			 
		 case myScreen.LENDTAG:
			 DBname=myScreen.LEND;
			 ViewDataF.setTitle("*借入单查看*");
			 break;
			 
		}
	}
	
	public ViewData()
	{
		this(myScreen.INCOMETAG);
	}
	
	public void Init()
	{
		vd=new MoneyData();
	   	vd.setDBname(DBname);
		DataS=vd.openRS();
		try
		{
		re=DataS.enumerateRecords(null,null,false);
		//RDsum=re.numRecords();
		}catch(Exception e)
		{
		}
		
		
		String tpsum="";	
		  int j=0;
		  while(j<10)
		  {
		  	try
			{
			int id=re.nextRecordId();
			byte tmp[]=DataS.getRecord(id);
			vd.decode(tmp);
			tpsum=Integer.toString(vd.getSum()/100)+"."+ (((vd.getSum()%100))>10?Integer.toString(vd.getSum()%100):("0"+Integer.toString(vd.getSum()%100)));					
				ViewDataF.append("单号ID: "+id+"\n"+"日期:"+vd.getDate()+"\n"+"名称:"+vd.getName()+" \n"+
						"金额:"+tpsum+" 元\n"+"------------\n");
				
				j++; 
			
			
			}catch(Exception e)
			{
				break;
			}
		  
		}	
		
		this.addCommand(NextPage);
		//this.addCommand(PreviousPage);
		this.addCommand(Back);
		this.setMainForm(ViewDataF);
		this.installCommands();
	}
	public int handleCommand (Command cmd,Displayable s)
	{
		if(cmd==NextPage)
		{
			NextPageM();			
			
		}
		 else if(cmd==Back)
		    {
		 	try
			{
		 	DataS.closeRecordStore();
			}catch(Exception e)
			{
				
			}
			return myScreen.VIEWFORM;
		    }
//		 else if(cmd==PreviousPage)
		 {
//		 	PreviousPageM();
		 }
		 return myScreen.WITHOUT;
	}
	
	private void NextPageM()
	{
		int tmpSize=ViewDataF.size();
		if(re.hasNextElement())
		{   
			for(int i=0;i<tmpSize;i++)
			{
				ViewDataF.delete(0);
				
			}
		  int j=0;
		  boolean tag=true;
		 
		  while(j<10&&tag)
		  {
		  	try
			{
			int id=re.nextRecordId();
			byte tmp[]=DataS.getRecord(id);
			vd.decode(tmp);
			//System.out.println("test");
							
			tpsum=Integer.toString(vd.getSum()/100)+"."+ (((vd.getSum()%100))>10?Integer.toString(vd.getSum()%100):("0"+Integer.toString(vd.getSum()%100)));					
			ViewDataF.append("单号ID: "+id+"\n"+"日期:"+vd.getDate()+"\n"+"名称:"+vd.getName()+" \n"+
					"金额:"+tpsum+" 元\n"+"------------\n");
				j++; 
			 
			
			}catch(Exception e)
			{
				break;
			}
		  }
		  tag=re.hasNextElement();
		}	
	}
	
/*	private void PreviousPageM()
	{
		int tmpSize=ViewDataF.size();
		if(re.hasPreviousElement())
		{
			 
				for(int i=0;i<tmpSize;i++)
					ViewDataF.delete(0);
				
			
				
		if(re.hasPreviousElement())	
		{		
		  int j=0;
		  boolean tag=true;
		  while(j<10&&tag)
		  {
		  	try
			{
			int id=re.previousRecordId();
			byte tmp[]=DataS.getRecord(id);
			vd.decode(tmp);
			//System.out.println("testP");
							
			tpsum=Integer.toString(vd.getSum()/100)+"."+ 
			(((vd.getSum()%100))>10?Integer.toString(vd.getSum()%100):
				("0"+Integer.toString(vd.getSum()%100)));					
			ViewDataF.append("单号ID: "+id+"\n"+"日期:"+vd.getDate()+"\n"+
					"名称:"+vd.getName()+" \n"+"金额:"+tpsum+" 元\n"+"------------\n");
				j++; 
			
			
			}catch(Exception e)
			{
				break;
			}
		  }
		  //System.out.println("test123");
		}
		}	
	}
	
*/

}