customitemdemo.java

j2me無線學習源碼,一個無線連接的源碼,很有用的哦

//customItemDemo.java file
import javax.microedition.lcdui.*;
import javax.microedition.midlet.*;
import itemex.*;

public class customItemDemo extends MIDlet implements CommandListener ,ItemCommandListener
{
    private Command exitCommand,editCommand,okCommand;
    private Form form;
    TableItem table1;
    TextField tfEdit;
    public customItemDemo()
    {
        exitCommand =new Command("Exit",Command.EXIT,1);
        form = new Form("CustomeItemDemo");
        form.addCommand(exitCommand);
        form.setCommandListener(this);
        
        table1 = new TableItem("4*3 table", 4, 3, 40, 20);
        form.append("----Head----");
        form.get(0).setLayout(Item.LAYOUT_NEWLINE_AFTER | Item.LAYOUT_2);
        form.append(table1);
        form.append("----Tail----");
        form.get(2).setLayout(Item.LAYOUT_NEWLINE_BEFORE | Item.LAYOUT_2);
        //设置单元格文字
        table1.setText("J2EE",0,0);
        table1.setText("J2SE",0,1);
        table1.setText("J2ME",0,2);
        
        //为TableItem 对象添加命令，并设置默认命令
        editCommand =new Command("Edit",Command.SCREEN,1);
        table1.addCommand(editCommand);
        table1.setItemCommandListener(this);
        table1.setDefaultCommand(editCommand);
        //为TextField 对象添加命令，并设置默认命令
        okCommand =new Command("OK",Command.SCREEN,1);
        tfEdit = new TextField("TextEdit","",10, TextField.ANY );
        form.append(tfEdit);
        tfEdit.addCommand(okCommand);
        tfEdit.setItemCommandListener(this);
    }
    protected void startApp(  ) throws MIDletStateChangeException
    {
        Display.getDisplay(this).setCurrent(form);
    }

    protected void pauseApp(  )
    {
    }

    protected void destroyApp( boolean p1 )
    {
    }

    public void commandAction(Command c,Displayable d)
    {
        if (c ==exitCommand)
        {
            destroyApp(false);
            notifyDestroyed();
        }
    }
    public void commandAction(Command c, Item i) 
    {
        if (c == editCommand) 
        {
            System.out.println("editCommand from TableItem");
            tfEdit.setString(table1.getText( table1.getCurrentX(),table1.getCurrentY()));
            Display.getDisplay(this).setCurrentItem(tfEdit);
        }
        if (c == okCommand) 
        {
            System.out.println("okCommand from TextField");
            table1.setText(tfEdit.getString(),table1.getCurrentX(),table1.getCurrentY());
            Display.getDisplay(this).setCurrentItem(table1);
        }
    }
    
}