socketmidlet.java

Java ME手机应用开发大全一书的配套光盘上的源码

import javax.microedition.midlet.*;
import javax.microedition.io.*;
import javax.microedition.lcdui.*;
import java.io.*;

public class SocketMIDlet extends MIDlet implements CommandListener {
private static final String SERVER = "Server";
private static final String CLIENT = "Client";
private static final String[] names = { SERVER, CLIENT };
private static Display display;
private Form f;
private ChoiceGroup cg;
private boolean isPaused;
private Server server;
private Client client;
private Command exitCommand = new Command("Exit", Command.EXIT, 1);
private Command startCommand = new Command("Start", Command.ITEM, 1);

public SocketMIDlet() {
display = Display.getDisplay(this);
f = new Form("Socket Demo");
cg = new ChoiceGroup("Please select peer", Choice.EXCLUSIVE, names,null);
f.append(cg);

f.addCommand(exitCommand);
f.addCommand(startCommand);
f.setCommandListener(this);

display.setCurrent(f);
}

public boolean isPaused() {
return isPaused;
}

public void startApp() {
isPaused = false;
}

public void pauseApp() {
isPaused = true;
}

public void destroyApp(boolean unconditional) {
if (server != null) {
server.stop();
}
if (client != null) {
client.stop();
}
}
public void commandAction(Command c, Displayable s) {
if (c == exitCommand) {
destroyApp(true);
notifyDestroyed();
} else if (c == startCommand) {
String name = cg.getString(cg.getSelectedIndex());
if (name.equals(SERVER)) {
server = new Server(this);
server.start();
} else {
client = new Client(this);
client.start();
}
}
}

}