fullscreen.java~123~

J2ME完成frame和全屏显示,供大家参考。

package fullscreen;

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

public class fullScreen
    extends MIDlet
    implements CommandListener, MessageListener, Runnable {

  Thread thread;
  /** Connections detected at start up. */
//  String[] connections;
  /** Flag to signal end of processing. */
  boolean done;
  Message msg;

  MessageConnection smsconn;
  String smsConnection = "sms://:" + "6262";

//sms://:6262
  private Command exitCommand;
  private Command showCommand;
  private Command fullCommand;
  private Command menuCommand1;
  private Command menuCommand2;
  private Command menuCommand3;
  private Command menuCommand4;
  private Command menuCommand5;
  private Command menuCommand6;
  private Command menuCommand7;
  private fullScreenCanvas sg;

  public fullScreen() {

    exitCommand = new Command("退出系统", Command.EXIT, 11);
    showCommand = new Command("正常", Command.SCREEN, 1);
    fullCommand = new Command("全屏", Command.SCREEN, 1);
    menuCommand1 = new Command("进入交易", Command.SCREEN, 1);
    menuCommand2 = new Command("交易历史查询", Command.SCREEN, 10);
    menuCommand3 = new Command("供应商信息", Command.SCREEN, 10);
    menuCommand4 = new Command("货物信息", Command.SCREEN, 10);
    menuCommand5 = new Command("过期消息", Command.SCREEN, 10);
    menuCommand6 = new Command("取消交易", Command.SCREEN, 1);
    menuCommand7 = new Command("播放声音", Command.SCREEN, 2);
    sg = new fullScreenCanvas();
    sg.addCommand(exitCommand);
    sg.addCommand(fullCommand);
    sg.setCommandListener(this);
    sg.setTitle(this.getClass().getName());

  }

  protected void startApp() {
    /** Open the message connection. */
    /** Open the message connection. */
    if (smsconn == null) {
      try {
        smsconn = (MessageConnection) Connector.open(smsConnection);
        smsconn.setMessageListener(this);
      }
      catch (IOException ioe) {
        ioe.printStackTrace();
      }
    }
    done = false;
    thread = new Thread(this);
    thread.start();

    Display.getDisplay(this).setCurrent(sg);
  }

  protected void pauseApp() {
  }

  protected void destroyApp(boolean arg0) {
  }

  public void commandAction(Command c, Displayable d) {
    if (c == exitCommand) {
      destroyApp(false);
      notifyDestroyed();
    }
//    if (c == showCommand) {
//      sg.addCommand(fullCommand);
//      sg.removeCommand(showCommand);
//      sg.show();
//
//    }
//    if (c == fullCommand) {
//      sg.removeCommand(fullCommand);
//      sg.addCommand(showCommand);
//      sg.addCommand(menuCommand1);
//      sg.addCommand(menuCommand2);
//      sg.addCommand(menuCommand3);
//      sg.addCommand(menuCommand4);
//      sg.addCommand(menuCommand5);
//      sg.addCommand(menuCommand6);
//      sg.addCommand(menuCommand7);
//
//      sg.full();
//
//    }
//    if (c == menuCommand1) {
//      this.connect();
//    }
//    if (c == this.menuCommand6) {
//      sg.show("你已取消交易！");
//    }
//    if (c == this.menuCommand7) {
//      this.playWAV();
//    }
  }

  SocketConnection connection = null;
  OutputStream os = null;
  InputStream is = null;
  public void connect() {
    try {
      connection = (SocketConnection) Connector.open(
//          "socket://211.152.109.101:9999");
          "socket://127.0.0.1:9999");
      connection.setSocketOption(SocketConnection.LINGER, 15);
      //    this.connection.setSocketOption((byte)'1', 15);
      byte iii = connection.DELAY;

      os = connection.openDataOutputStream();
      os.write("hello dachan!\r\n".getBytes());

      is = connection.openDataInputStream();
      int ch;
      ByteArrayOutputStream tmp = new
          ByteArrayOutputStream();
      while ( (ch = is.read()) != -1) {
        tmp.write(ch);
        if (ch == 50) { //'2'
          break;
        }
      }
      os.write("see u!\r\n".getBytes());
      byte[] b = tmp.toByteArray();
      StringBuffer s = new StringBuffer();
      for (int i = 0; i < b.length - 1; i++) {
        s.append( (char) b[i]);
      }
      this.sg.show(s.toString());
//      this.sg.setTitle(s.toString());
    }
    catch (IOException e) {
      e.printStackTrace();
    }
    finally {
      try {

//        data = tmp.toByteArray();
        if (is != null) {
          is.close();
        }
        if (os != null) {
          os.close();
        }
        if (connection != null) {
          connection.close();
        }
      }
      catch (IOException e) {
        e.printStackTrace();
      }

    }
  }

  public void playWAV() {
    try {

      InputStream in = getClass().getResourceAsStream("hello.wav");

      Player p = Manager.createPlayer(in, "audio/x-wav");
      p.start();
    }
    catch (MediaException pe) {
      pe.printStackTrace();
    }
    catch (IOException ioe) {
      ioe.printStackTrace();
    }

  }

  /**
   * notifyIncomingMessage
   *
   * @param messageConnection MessageConnection
   */
  public void notifyIncomingMessage(MessageConnection messageConnection) {
    if (thread == null) {
      done = false;
      thread = new Thread(this);
      thread.start();
    }

  }

  /**
   * run
   */
  public void run() {
    try {
      msg = smsconn.receive();

    }
    catch (IOException e) {
      // e.printStackTrace();
    }

  }

}

class fullScreenCanvas
    extends Canvas {
  private boolean fulled = false; //cleared 表示被清除了
  private boolean showString = false;
  private String s = "";
  private javax.microedition.lcdui.TextField aaa = new TextField("asdf", "asdf", TextField.ANY, TextField.PASSWORD);

  protected fullScreenCanvas() {
    fulled = false;
  }

  protected void paint(Graphics g) {
    if (showString) {
      g.setColor(255, 255, 255);
      g.fillRect(0, 0, getWidth(), getHeight());
      g.setColor(0, 0, 0);
      g.drawString(s, this.getWidth() / 2 - 2, this.getHeight() / 2 - 2,
                   Graphics.BOTTOM | Graphics.HCENTER);
      showString = false;
    }
    else if (!fulled) {
      //先清屏，后显示字符串
      g.setColor(255, 255, 255);
      g.fillRect(0, 0, getWidth(), getHeight());
      g.setColor(0, 0, 0);
      g.drawString("目前状态：正常屏幕", this.getWidth() / 2, this.getHeight() / 2,
                   Graphics.BOTTOM | Graphics.HCENTER);
    }
    else {
      //先清屏，后显示字符串
      g.setColor(255, 255, 255);
      g.fillRect(0, 0, getWidth(), getHeight());
      g.setColor(0, 0, 0);
      g.drawString("目前状态：全屏", this.getWidth() / 2, this.getHeight() / 2,
                   Graphics.BOTTOM | Graphics.HCENTER);
      fulled = true;
    }
  }

  public void full() {
    setFullScreenMode(true);
    fulled = true;
    repaint();
  }

  public void show() {
    setFullScreenMode(false);
    fulled = false;
    repaint();
  }

  public void show(String s) {

    setFullScreenMode(true);
    this.s = s;
    this.showString = true;
    repaint();
  }
}