firstpage.java

J2me 开发 简单的程序。实现页面跳转

package test;

import java.io.IOException;

import javax.microedition.lcdui.Choice;
import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.Form;
import javax.microedition.lcdui.Image;
import javax.microedition.lcdui.Item;
import javax.microedition.lcdui.List;
import javax.microedition.lcdui.Ticker;

public class FirstPage extends Form implements CommandListener
{
    // TICKER_TEXT滚动文字
    private static final String TICKER_TEXT = "这是一个滚动条的例子正在滚动，可以一直滚动除非有触发了停止事件";

    // display
    private Display display;
    //
    private Ticker ticker = null;

    // m_cmdBack
    private Command m_cmdBack = null;
    //list
    private List list= null;

    public FirstPage(Display display,Displayable list)
    {
        super("FirstPage");
        //
        this.list = (List)list;
        this.display= display;
        m_cmdBack = new Command("Back", Command.BACK, 1);
        ticker = new Ticker(TICKER_TEXT);
        this.setTicker(ticker);
        String[] stringArray = { 
                "Exclusive", 
                "Implicit", 
                "Multiple" 
               }; 
        List mainList = new List("Choose type", Choice.IMPLICIT, stringArray, null); 
        //增加图片
        Image icon = null;
        try
        {
            icon = Image.createImage("/title.png");
        }
        catch (IOException e)
        {
            e.printStackTrace();
        }
        this.append(icon);

        //增加按钮
        this.addCommand(m_cmdBack);
        this.setCommandListener(this);
        //显示FirstPage
        display.setCurrent(mainList);

    }

    public void commandAction(Command c, Displayable d)
    {
        if (m_cmdBack == c)
        {
            display.setCurrent(list);
        }

    }

}