wmaclient.java

JAVA编程百例书中各章节的所有例子的源代码,包括套接字编程

package ch09.section06;

import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import javax.microedition.io.*;
import javax.wireless.messaging.*;
import java.io.*;
import java.lang.*;
import java.util.*;

public class WMAClient
    extends MIDlet
    implements CommandListener, MessageListener {

  private Command exitCommand;

  private Command sendMsgCommand;

  private Display display;
  Form displayForm;
  String msgToSend = "Can you hear me?";
  MessageConnection clientConn;
  public WMAClient() {
    display = Display.getDisplay(this);
    exitCommand =
        new Command("Exit", Command.SCREEN, 1);
    sendMsgCommand =
        new Command("Send", Command.SCREEN, 1);

  }

  public void notifyIncomingMessage(MessageConnection conn) {
  }

  public void startApp() {
    displayForm = new Form("Send Message");
    displayForm.addCommand(exitCommand);
    displayForm.addCommand(sendMsgCommand);
    displayForm.setCommandListener(this);
    displayForm.setItemStateListener(this);
    display.setCurrent(displayForm);
    try {
      clientConn = (MessageConnection) Connector.open(
          "sms://[phone] : 5000");

    }
    catch (IOException ioExc) {
      System.out.println("Client connection could not be obtained");
      ioExc.printStackTrace();
    }
  }

  public void pauseApp() {}

  public void destroyApp(boolean unconditional) {}

  public void commandAction(
      Command c, Displayable s) {
    if (c == exitCommand) {
      destroyApp(false);
      notifyDestroyed();
    }
    if (c == sendMsgCommand) {
      try {
        TextMessage tmsg =
            (TextMessage) clientConn.newMessage
            (MessageConnection.TEXT_MESSAGE);
        tmsg.setAddress("sms://18643630999:5000");
        tmsg.setPayloadText(msgToSend);
        clientConn.send(tmsg);
      }
      catch (Exception exc) {
        exc.printStackTrace();
      }
    }
  }
}