import javax.microedition.io.Connector;
import javax.microedition.lcdui.Alert;
import javax.microedition.lcdui.AlertType;
import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.Form;
import javax.microedition.lcdui.TextField;
import javax.microedition.midlet.MIDlet;
import javax.microedition.midlet.MIDletStateChangeException;
import javax.wireless.messaging.MessageConnection;
import javax.wireless.messaging.TextMessage;

public class SendSMSMsg extends MIDlet implements CommandListener {
	private Display display = null;
    
	/** 退出命令按鈕 */
    private Command cmdExit = new Command("退出", Command.EXIT, 1);
    
    /** 發送消息的命令按鈕 */
    private Command cmdSendMsg = new Command("發送", Command.SCREEN, 1);
    
    private Form form = new Form("發送文本信息");
    
    
    /** 用于輸發送到的電話號碼 */
    private TextField tfPhoneNumber = new TextField("請輸入接收號碼：",
    		"+5550000", 20,
            TextField.PHONENUMBER);
    /** 用于輸發送端口 */
    private TextField tfPort = new TextField("請輸入接收端口：",
    		"", 20,
            TextField.PHONENUMBER);
    /** 消息內容 */
    private TextField tfMsgText = new TextField("請輸入消息內容：",
    		"", 255, 
    		TextField.ANY);
    
	public SendSMSMsg() {
		super();
		
		form.append(tfPhoneNumber);
		form.append(tfPort);
		form.append(tfMsgText);
               
        form.addCommand(cmdExit);
        form.addCommand(cmdSendMsg);
        form.setCommandListener(this);
	}

	protected void startApp() throws MIDletStateChangeException {
        display = Display.getDisplay(this);
        display.setCurrent(form);
	}

	protected void pauseApp() {
		// TODO 自動生成方法存根

	}

	protected void destroyApp(boolean arg0)
		throws MIDletStateChangeException {
		// TODO 自動生成方法存根

	}
    
    /**
     * 處理命令按鈕事件
     */
    public void commandAction(Command c, Displayable s) {
        if (c == cmdExit) {
        	notifyDestroyed();
        } else if (c == cmdSendMsg) {
        	send();

        }
    }
    
    /**
     *  在獨立的線程中發送消息
     */
    private void send() {
    	new Thread() {
    		public void run() {
    			//檢查電話號碼是否存在
    			String number = tfPhoneNumber.getString();
    			if (number.equals("")) {
    				Alert alert = new Alert("發送消息錯誤",
    						"請輸入接收的電話號碼", null,
    						AlertType.ERROR);
    				alert.setTimeout(2000);
    				display.setCurrent(alert, form);
    				AlertType.ERROR.playSound(display);
    				return;
    			} 

    			//地址
    			String address;
    			if (number.startsWith("+")) {
    				address = "sms://" + number;
    			} else {
    				address = "sms://+" + number;
    			}
    			  
    			//獲得端口
    			String port = tfPort.getString();
	            if (!port.equals("")) {
	            	address+=":"+port;
	            }
	            System.out.println(address);
    			try {
    	            //建立連接
    	            MessageConnection mc = (MessageConnection)Connector.open(address);   
    	         
    	            //設置短信息類型為文本
    	            TextMessage msg = (TextMessage)mc.newMessage(
    	                    MessageConnection.TEXT_MESSAGE);
    	            //設置消息地址
    	            msg.setAddress(address);
    	            //設置信息內容
    	            msg.setPayloadText(tfMsgText.getString());
    	            //發送消息
    	            mc.send(msg);
                    mc.close();
                    mc = null;
    			} catch (Exception e) {
    				e.printStackTrace();
    			}
    		}
    	}.start();
    }
}