孙向锦 / VoteC5

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C5/app/src/main/java/com/sunvote/xpadcomm/DownloadFileSendThread.java 3.04 KB
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fac86401   孙向锦   初始化C5 Vote 
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  package com.sunvote.xpadcomm;
  
  import android.os.Handler;
  import android.os.HandlerThread;
  
  import java.io.IOException;
  import java.net.DatagramPacket;
  import java.net.DatagramSocket;
18faef8d   孙向锦   下载修改 
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  import java.net.InetAddress;
fac86401   孙向锦   初始化C5 Vote 
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  import java.net.SocketException;
  
  import com.sunvote.util.LogUtil;
  
  /**
   * Created by Elvis on 2017/12/25 15:38
   * Email:Eluis@psunsky.com
   * 版权所有：长沙中天电子设计开发有限公司
   * Description: 人大通用版XPadAppRD
   * 下载文件发送数据请求线程
   */
  public class DownloadFileSendThread extends HandlerThread {
  
      private static String TAG = "DownloadFileSendThread" ;
  
      private DatagramSocket udpSocket ;
      private DatagramPacket packet;
      private Handler handler;
  
      public DownloadFileSendThread() {
          super(TAG);
          start();
          handler = new Handler(getLooper());
      }
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      public boolean sendData(final byte flag,final byte type,final int index,final String ip,final int port){
          handler.post(new Runnable() {
              @Override
              public void run() {
                  byte[] buffer = new byte[10];
                  buffer[0] = (byte) 0xFE;
                  buffer[1] = (byte) 0xAA;
                  buffer[2] = flag;
                  buffer[3] = type;//
                  buffer[4] = (byte) ((index >> 8) & 0xff);
                  buffer[5] = (byte) (index & 0xff);
                  InetAddress servInetAddress;
                  try {
                      servInetAddress = InetAddress.getByName(ip);
                  } catch (Exception e) {
                      LogUtil.e(TAG, e);
                      return ;
                  }
                  LogUtil.i(TAG,"sendNextData",buffer);
                  packet = new DatagramPacket(buffer, buffer.length, servInetAddress, port);
                  handler.removeCallbacks(task);
                  handler.post(task);
              }
          });
fac86401   孙向锦   初始化C5 Vote 
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          return true;
      }
  
      private Runnable task = new Runnable() {
          @Override
          public void run() {
              if (handler != null) {
                  handler.removeCallbacks(this);
                  if (udpSocket == null) {
                      try {
                          udpSocket = new DatagramSocket();
                      } catch (SocketException e) {
                          LogUtil.e(TAG, e);
                      }
                  }
                  if (udpSocket != null && packet != null) {
                      try {
                          LogUtil.i(TAG,"send to server",packet.getData());
                          udpSocket.send(packet);
                      } catch (IOException e) {
                          LogUtil.e(TAG, e);
                          udpSocket.close();
                          udpSocket = null;
                      }
                  }
              }
              if(handler != null){
                  handler.postDelayed(this, 1000);
              }
          }
      };
  
      public void close(){
          handler.removeCallbacks(task);
          if(udpSocket != null){
              udpSocket.close();
              udpSocket = null;
          }
          handler = null;
          packet = null;
          quit();
      }
  }