/* * @(#)SMSReceive.java	1.8 03/03/09 * * Copyright (c) 1999-2003 Sun Microsystems, Inc. All rights reserved. * PROPRIETARY/CONFIDENTIAL * Use is subject to license terms */package example.sms;import javax.microedition.midlet.*;import javax.microedition.io.*;import javax.microedition.lcdui.*;import javax.wireless.messaging.*;import java.io.IOException;/** * An example MIDlet displays text from an SMS MessageConnection */public class SMSReceive extends MIDlet    implements CommandListener, Runnable, MessageListener {    /** user interface command for indicating Exit request. */    Command exitCommand  = new Command("Exit", Command.EXIT, 2);    /** user interface command for indicating Reply request */    Command replyCommand = new Command("Reply", Command.OK, 1);    /** user interface text box for the contents of the fetched URL. */    Alert content;    /** current display. */    Display display;    /** instance of a thread for asynchronous networking and user interface. */    Thread thread;    /** Connections detected at start up. */    String[] connections;    /** Flag to signal end of processing. */    boolean done;    /** The port on which we listen for SMS messages */    String smsPort;    /** SMS message connection for inbound text messages. */    MessageConnection smsconn;    /** Current message read from the network. */    Message msg;    /** Address of the message's sender */    String senderAddress;    /** Alert that is displayed when replying */    Alert sendingMessageAlert;    /** Prompts for and sends the text reply */    SMSSender sender;    /** The screen to display when we return from being paused */    Displayable resumeScreen;    /**     * Initialize the MIDlet with the current display object and     * graphical components.     */    public SMSReceive() {        smsPort = getAppProperty("SMS-Port");        display = Display.getDisplay(this);        content = new Alert("SMS Receive");        content.setTimeout(Alert.FOREVER);        content.addCommand(exitCommand);        content.setCommandListener(this);        content.setString("Receiving...");        sendingMessageAlert = new Alert("SMS", null, null, AlertType.INFO);        sendingMessageAlert.setTimeout(5000);        sendingMessageAlert.setCommandListener(this);        sender = new SMSSender(smsPort, display, content, sendingMessageAlert);        resumeScreen = content;    }    /**     * Start creates the thread to do the MessageConnection receive     * text.     * It should return immediately to keep the dispatcher     * from hanging.     */    public void startApp() {        /** SMS connection to be read. */        String smsConnection = "sms://:" + smsPort;        /** Open the message connection. */        if (smsconn == null) {            try {                smsconn = (MessageConnection) Connector.open(smsConnection);                smsconn.setMessageListener(this);            } catch (IOException ioe) {                ioe.printStackTrace();            }        }        /** Initialize the text if we were started manually. */        connections = PushRegistry.listConnections(true);        if (connections == null || connections.length == 0) {            content.setString("Waiting for SMS on port " + smsPort + "...");        }        done = false;        thread = new Thread(this);        thread.start();        display.setCurrent(resumeScreen);    }    /**     * Notification that a message arrived.     * @param conn the connection with messages available     */    public void notifyIncomingMessage(MessageConnection conn) {        if (thread == null) {            done = false;            thread = new Thread(this);            thread.start();        }    }    /** Message reading thread. */    public void run() {        /** Check for sms connection. */        try {            msg = smsconn.receive();            if (msg != null) {                senderAddress = msg.getAddress();                content.setTitle("From: " + senderAddress);                if (msg instanceof TextMessage) {                    content.setString(((TextMessage)msg).getPayloadText());                } else {                    StringBuffer buf = new StringBuffer();                    byte[] data = ((BinaryMessage)msg).getPayloadData();                    for (int i = 0; i < data.length; i++) {                        buf.append(Integer.toHexString((int) data[i]));                        buf.append(' ');                    }                    content.setString(buf.toString());                }                content.addCommand(replyCommand);                display.setCurrent(content);            }        } catch (IOException e) {            // e.printStackTrace();        }    }    /**     * Pause signals the thread to stop by clearing the thread field.     * If stopped before done with the iterations it will     * be restarted from scratch later.     */    public void pauseApp() {        done = true;        thread = null;        resumeScreen = display.getCurrent();    }    /**     * Destroy must cleanup everything.  The thread is signaled     * to stop and no result is produced.     * @param unconditional true if a forced shutdown was requested     */    public void destroyApp(boolean unconditional) {        done = true;        thread = null;        if (smsconn != null) {            try {                smsconn.close();            } catch (IOException e) {                // Ignore any errors on shutdown            }        }    }    /**     * Respond to commands, including exit     * @param c user interface command requested     * @param s screen object initiating the request     */    public void commandAction(Command c, Displayable s) {        try {            if (c == exitCommand || c == Alert.DISMISS_COMMAND) {                destroyApp(false);                notifyDestroyed();            } else if (c == replyCommand) {                reply();            }        } catch (Exception ex) {            ex.printStackTrace();        }    }    /**     * Allow the user to reply to the received message     */    private void reply() {        // remove the leading "sms://" for diplaying the destination address        String address = senderAddress.substring(6);        String statusMessage = "Sending message to " + address + "...";        sendingMessageAlert.setString(statusMessage);        sender.promptAndSend(senderAddress);    }}