mainform.java

《J2ME实用教程》 源文件下载 本书没有仅仅局限于J2ME单机游戏的开发

package http;

import javax.microedition.lcdui.*;
import javax.microedition.midlet.MIDlet;
public class MainForm extends Form implements CommandListener
{
private MailClient midlet;
private TextField toField;
private TextField subField;
private boolean first = true;
public static final Command nextCommand = new Command("NEXT", Command.OK, 1);
public MainForm(MailClient midlet, String arg0)
{
super(arg0);
this.midlet = midlet;
if(first)
{
first = false;
init();
}
}
public void init()
{
toField = new TextField("To:", null, 25, TextField.ANY);
subField = new TextField("Subject:", null, 30, TextField.ANY);
this.append(toField);
 
this.append(subField);
this.addCommand(nextCommand);
this.setCommandListener(this);
}
public void commandAction(Command cmd,Displayable disp)
{
if(cmd == nextCommand)
{
String to = toField.getString();
String subject = subField.getString();
if(to == "" && subject == "")
{
midlet.displayAlert("Null to or sub",AlertType.WARNING,this);
}
else
{
midlet.getMessage().setTo(to);
midlet.getMessage().setSubject(subject);
midlet.getDisplay().setCurrent(midlet.getContentForm());
}
}
}
}