clockmidlet.java

J2ME编程的50个例子,适合掌上系统的编程

import java.util.Date;

import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.DateField;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.Form;
import javax.microedition.lcdui.StringItem;
import javax.microedition.midlet.MIDlet;
import javax.microedition.midlet.MIDletStateChangeException;


public class ClockMidlet extends MIDlet implements CommandListener{
	private Form form;                           //对话框
	private DateField datefield;                 //用于输入出生日期
	private StringItem stringitem1;              //用于显示测试结果
	private StringItem stringitem2;              //用于显示测试结果
	private StringItem stringitem3;              //用于显示测试结果
	private Command OKCommand;                   //检测按钮
	private Command OKCommand2;                  //重置按钮
	private Command ExitCommand;                 //退出按钮
	public ClockMidlet() {
		super();
		//创建对话框及组件,并将组件添加到对话框
		form = new Form("生物钟");
		datefield = new DateField("出生日期", DateField.DATE );
		stringitem1 = new StringItem("体力", "无检测结果");
		stringitem2 = new StringItem("情绪", "无检测结果");
		stringitem3 = new StringItem("智力", "无检测结果");
		form.append(datefield);
		form.append(stringitem1);
		form.append(stringitem2);
		form.append(stringitem3);
		
		//创建高级按钮,并将高级按钮添加到对话框
		OKCommand = new Command( "检测", Command.OK, 2);
		OKCommand2 = new Command( "重置", Command.OK, 1);
		ExitCommand = new Command( "退出", Command.EXIT, 0);
		form.addCommand(OKCommand);
		form.addCommand(ExitCommand);
		form.addCommand(OKCommand2);
		//设置高级按钮监听器
		form.setCommandListener(this);
	}
	protected void destroyApp(boolean arg0) throws MIDletStateChangeException {
	}
	protected void pauseApp() {
	}
	protected void startApp() throws MIDletStateChangeException {
		//将对话框设置为当前屏幕的显示对象
		Display.getDisplay(this).setCurrent(form);
	}
	public void commandAction(Command c, Displayable d) {
		if(c == OKCommand){			//当检测按钮被按下后
			//计算总天数
			Date date = datefield.getDate();
			long temp = System.currentTimeMillis() - date.getTime();
			long X = temp / ( 24 * 60 * 60 * 1000 );
			//计算节律
			long Y1 = X % 23;
			long Y2 = X % 28;
			long Y3 = X % 33;
			//计算节律阶段,并反馈信息
			if( Y1 == 0 || Y1 == 1 || Y1 == 11 || Y1 == 12 )
				stringitem1.setText("处于临界期,易患疾病");
			else if( Y1 < 12 )
				stringitem1.setText("处于高潮期,体力充沛精力旺");
			else
				stringitem1.setText("处于低潮期,体力不足易疲劳");
			
			if( Y2 == 0 || Y2 == 1 || Y2 == 23 || Y2 == 24 || Y2 == 25 )
				stringitem2.setText("处于临界期,容易冲动");
			else if( Y2 < 24 )
				stringitem2.setText("处于高潮期,情绪高精神爽");
			else
				stringitem2.setText("处于低潮期,情绪低心情烦");
			
			if( Y3 == 0 || Y3 == 1 || Y3 == 16 || Y3 == 17 )
				stringitem3.setText("处于临界期,易出差错");
			else if( Y3 < 17 )
				stringitem3.setText("处于高潮期,思维敏捷反应快");
			else
				stringitem3.setText("处于低潮期,反应迟钝记忆差");
		}
		if(c == ExitCommand){			//当退出按钮按下后,退出程序
			notifyDestroyed();
		}
		if(c == OKCommand2){			//当重置按钮按下后,重置显示信息
			stringitem1.setText("无检测结果");
			stringitem2.setText("无检测结果");
			stringitem3.setText("无检测结果");
		}
	}
}